v2.2.0

Support including Taskfiles

.editorconfig

@@ -9,6 +9,6 @@ trim_trailing_whitespace = true
 indent_style = tab
 indent_size = 8
 
-[*.{md,yml,yaml,json,toml}]
+[*.{md,yml,yaml,json,toml,htm,html}]
 indent_style = space
 indent_size = 2

.github/CONTRIBUTING.md

@@ -1,12 +1,6 @@
 * Bug reports and feature requests are welcome in [the issues][issues]
-* For questions and discussion there's the [Slack room][slack] ([invititation here][slackinvite])
 * Pull Requests are welcome. For more complex changes and features it's
-  recommended to open an issue first
-* About 3 or 4 pull requests accepted one gets write access to the repo.
-  Even then, possible backward incompatible changes should be discussed first
-  in an issue or pull request
+  recommended to open an issue with the feature request first
 * Documentation contributions are as important as code contributions
 
 [issues]: https://github.com/go-task/task/issues
-[slack]: https://gophers.slack.com/messages/task
-[slackinvite]: https://invite.slack.golangbridge.org/

.github/ISSUE_TEMPLATE.md

@@ -1,7 +1,4 @@
 <!--
-For questions and general talk there's the Slack room: https://gophers.slack.com/messages/task
-Invite to the Slack is available in this link: https://invite.slack.golangbridge.org/
-
 If relevant, include the following information:
 - Task version
 - OS

.gitignore

@@ -16,4 +16,4 @@
 ./task
 dist/
 
-vendor/**/*_test.go
+.DS_Store

.goreleaser.yml

@@ -11,6 +11,8 @@ build:
   ignore:
     - goos: darwin
       goarch: 386
+  env:
+    - CGO_ENABLED=0
 
 archive:
   name_template: "{{.Binary}}_{{.Os}}_{{.Arch}}"
@@ -22,12 +24,21 @@ archive:
 release:
   draft: true
 
-fpm:
+snapshot:
+  name_template: "{{.Tag}}"
+
+checksum:
+  name_template: "task_checksums.txt"
+
+nfpm:
   vendor: Task
   homepage: https://github.com/go-task/task
   maintainer: Andrey Nering <andrey.nering@gmail.com>
   description: Simple task runner written in Go
   license: MIT
+  conflicts:
+    - taskwarrior
   formats:
     - deb
     - rpm
+  name_template: "{{.ProjectName}}_{{.Os}}_{{.Arch}}"

.travis.yml

@@ -1,9 +1,22 @@
 language: go
+
 go:
-  - 1.8
-  - 1.9
+  - 1.9.x
+  - 1.10.x
+
+addons:
+  apt:
+    packages:
+      - rpm
+
 script:
   - go install github.com/go-task/task/cmd/task
-  - task dl-deps
-  - task lint
-  - task test
+  - task ci
+
+deploy:
+  - provider: script
+    skip_cleanup: true
+    script: curl -sL http://git.io/goreleaser | bash
+    on:
+      tags: true
+      condition: $TRAVIS_OS_NAME = linux

Gopkg.lock

@@ -2,122 +2,187 @@
 
 
 [[projects]]
+  branch = "master"
+  digest = "1:f3960e064201714a3507bf96183be246b3d941568af01dc5cff2a388ac4c7515"
   name = "github.com/Masterminds/semver"
   packages = ["."]
-  revision = "15d8430ab86497c5c0da827b748823945e1cf1e1"
-  version = "v1.4.0"
+  pruneopts = "NUT"
+  revision = "c84ddcca87bf5a941b138dde832a7e20b0159ad8"
 
 [[projects]]
   branch = "master"
+  digest = "1:58551c80f84fd3ba2954668f5f850a8179dc3c5bb4885fc7eed5a8e2ae815c99"
   name = "github.com/Masterminds/sprig"
   packages = ["."]
-  revision = "82f6f19d47b416d27ae039939b44afaa0575860e"
+  pruneopts = "NUT"
+  revision = "77bb58b7f5e10889a1195c21b9e7a96ee166f199"
 
 [[projects]]
+  digest = "1:975108e8d4f5dab096fc991326e96a5716ee8d02e5e7386bb4796171afc4ab9a"
   name = "github.com/aokoli/goutils"
   packages = ["."]
+  pruneopts = "NUT"
   revision = "3391d3790d23d03408670993e957e8f408993c34"
   version = "v1.0.1"
 
 [[projects]]
+  digest = "1:ffe9824d294da03b391f44e1ae8281281b4afc1bdaa9588c9097785e3af10cec"
   name = "github.com/davecgh/go-spew"
   packages = ["spew"]
-  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
+  pruneopts = "NUT"
+  revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
+  version = "v1.1.1"
+
+[[projects]]
+  digest = "1:a1578f7323eca2b88021fdc9a79a99833d40b12c32a5ea4f284e2fad19ea2657"
+  name = "github.com/google/uuid"
+  packages = ["."]
+  pruneopts = "NUT"
+  revision = "d460ce9f8df2e77fb1ba55ca87fafed96c607494"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:ed24122ea28f4f65f82f5b4703389fdbb5f246efc971e4d74f01f7c47c0b81b2"
+  name = "github.com/huandu/xstrings"
+  packages = ["."]
+  pruneopts = "NUT"
+  revision = "55ae428c2ac4f74d7430952ef528631e656ac92c"
   version = "v1.1.0"
 
 [[projects]]
-  branch = "master"
-  name = "github.com/huandu/xstrings"
-  packages = ["."]
-  revision = "d6590c0c31d16526217fa60fbd2067f7afcd78c5"
-
-[[projects]]
+  digest = "1:9a52adf44086cead3b384e5d0dbf7a1c1cce65e67552ee3383a8561c42a18cd3"
   name = "github.com/imdario/mergo"
   packages = ["."]
-  revision = "7fe0c75c13abdee74b09fcacef5ea1c6bba6a874"
-  version = "0.2.4"
+  pruneopts = "NUT"
+  revision = "9f23e2d6bd2a77f959b2bf6acdbefd708a83a4a4"
+  version = "v0.3.6"
 
 [[projects]]
   branch = "master"
+  digest = "1:729c1199021f057f38487f7e64432f3539f9efac444185e64b4b7e121414ac68"
   name = "github.com/mattn/go-zglob"
-  packages = [".","fastwalk"]
-  revision = "4b74c24375b3b1ee226867156e01996f4e19a8d6"
+  packages = [
+    ".",
+    "fastwalk",
+  ]
+  pruneopts = "NUT"
+  revision = "2ea3427bfa539cca900ca2768d8663ecc8a708c1"
 
 [[projects]]
-  branch = "master"
+  digest = "1:a4df73029d2c42fabcb6b41e327d2f87e685284ec03edf76921c267d9cfc9c23"
   name = "github.com/mitchellh/go-homedir"
   packages = ["."]
-  revision = "b8bc1bf767474819792c23f32d8286a45736f1c6"
+  pruneopts = "NUT"
+  revision = "ae18d6b8b3205b561c79e8e5f69bff09736185f4"
+  version = "v1.0.0"
 
 [[projects]]
+  digest = "1:0028cb19b2e4c3112225cd871870f2d9cf49b9b4276531f03438a88e94be86fe"
   name = "github.com/pmezard/go-difflib"
   packages = ["difflib"]
+  pruneopts = "NUT"
   revision = "792786c7400a136282c1664665ae0a8db921c6c2"
   version = "v1.0.0"
 
 [[projects]]
+  branch = "master"
+  digest = "1:5089085e1b27a57be4fb7acf32bfa71fb6236dc0e8371165651c9e15285a9ce0"
   name = "github.com/radovskyb/watcher"
   packages = ["."]
-  revision = "6145e1439b9de93806925353403f91d2abbad8a5"
-  version = "v1.0.2"
-
-[[projects]]
-  name = "github.com/satori/go.uuid"
-  packages = ["."]
-  revision = "879c5887cd475cd7864858769793b2ceb0d44feb"
-  version = "v1.1.0"
+  pruneopts = "NUT"
+  revision = "0d9d32686dbf6395752c9b209398a59e302a7f1e"
 
 [[projects]]
   branch = "master"
+  digest = "1:9d8420bbf131d1618bde6530af37c3799340d3762cc47210c1d9532a4c3a2779"
   name = "github.com/spf13/pflag"
   packages = ["."]
-  revision = "4c012f6dcd9546820e378d0bdda4d8fc772cdfea"
+  pruneopts = "NUT"
+  revision = "298182f68c66c05229eb03ac171abe6e309ee79a"
 
 [[projects]]
+  digest = "1:bacb8b590716ab7c33f2277240972c9582d389593ee8d66fc10074e0508b8126"
   name = "github.com/stretchr/testify"
   packages = ["assert"]
-  revision = "69483b4bd14f5845b5a1e55bca19e954e827f1d0"
-  version = "v1.1.4"
+  pruneopts = "NUT"
+  revision = "f35b8ab0b5a2cef36673838d662e249dd9c94686"
+  version = "v1.2.2"
 
 [[projects]]
   branch = "master"
+  digest = "1:69b3fcb7a41b18436a85471cbdcfc70ad10ba3206f8c87563e1c773610e1bcad"
   name = "golang.org/x/crypto"
-  packages = ["pbkdf2","scrypt","ssh/terminal"]
-  revision = "9f005a07e0d31d45e6656d241bb5c0f2efd4bc94"
+  packages = [
+    "pbkdf2",
+    "scrypt",
+    "ssh/terminal",
+  ]
+  pruneopts = "NUT"
+  revision = "182538f80094b6a8efaade63a8fd8e0d9d5843dd"
 
 [[projects]]
   branch = "master"
+  digest = "1:76ee51c3f468493aff39dbacc401e8831fbb765104cbf613b89bef01cf4bad70"
   name = "golang.org/x/net"
   packages = ["context"]
-  revision = "9dfe39835686865bff950a07b394c12a98ddc811"
+  pruneopts = "NUT"
+  revision = "8a410e7b638dca158bf9e766925842f6651ff828"
 
 [[projects]]
   branch = "master"
+  digest = "1:39ebcc2b11457b703ae9ee2e8cca0f68df21969c6102cb3b705f76cca0ea0239"
   name = "golang.org/x/sync"
   packages = ["errgroup"]
-  revision = "fd80eb99c8f653c847d294a001bdf2a3a6f768f5"
+  pruneopts = "NUT"
+  revision = "1d60e4601c6fd243af51cc01ddf169918a5407ca"
 
 [[projects]]
   branch = "master"
+  digest = "1:8270f14d85e8d36e852e018872ac923f7a2067648bfe8428d01be288818aa337"
   name = "golang.org/x/sys"
-  packages = ["unix","windows"]
-  revision = "0ac51a24ef1c37380f98ba8b98f56e3bffd59850"
+  packages = [
+    "unix",
+    "windows",
+  ]
+  pruneopts = "NUT"
+  revision = "fa5fdf94c78965f1aa8423f0cc50b8b8d728b05a"
 
 [[projects]]
   branch = "v2"
+  digest = "1:7c95b35057a0ff2e19f707173cc1a947fa43a6eb5c4d300d196ece0334046082"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
-  revision = "287cf08546ab5e7e37d55a84f7ed3fd1db036de5"
+  pruneopts = "NUT"
+  revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
 
 [[projects]]
   branch = "master"
+  digest = "1:e647f1f4fcc94a6baad3965a347c1ac4ed669f31c87c826516314e415d1a4ad2"
   name = "mvdan.cc/sh"
-  packages = ["interp","syntax"]
-  revision = "5758e57655f2f2242603195aaaad08d1cb9f8f85"
+  packages = [
+    "interp",
+    "shell",
+    "syntax",
+  ]
+  pruneopts = "NUT"
+  revision = "3a244a89e2e520d2777e94693d51bef800761879"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "da52cb2c602c1362c303cf241aa18dfd6199f30484bb12684adb0b6927391cbf"
+  input-imports = [
+    "github.com/Masterminds/semver",
+    "github.com/Masterminds/sprig",
+    "github.com/mattn/go-zglob",
+    "github.com/mitchellh/go-homedir",
+    "github.com/radovskyb/watcher",
+    "github.com/spf13/pflag",
+    "github.com/stretchr/testify/assert",
+    "golang.org/x/sync/errgroup",
+    "gopkg.in/yaml.v2",
+    "mvdan.cc/sh/interp",
+    "mvdan.cc/sh/shell",
+    "mvdan.cc/sh/syntax",
+  ]
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -1,79 +1,12 @@
-
-## Gopkg.toml example (these lines may be deleted)
-
-## "metadata" defines metadata about the project that could be used by other independent
-## systems. The metadata defined here will be ignored by dep.
-# [metadata]
-# key1 = "value that convey data to other systems"
-# system1-data = "value that is used by a system"
-# system2-data = "value that is used by another system"
-
-## "required" lists a set of packages (not projects) that must be included in
-## Gopkg.lock. This list is merged with the set of packages imported by the current
-## project. Use it when your project needs a package it doesn't explicitly import -
-## including "main" packages.
-# required = ["github.com/user/thing/cmd/thing"]
-
-## "ignored" lists a set of packages (not projects) that are ignored when
-## dep statically analyzes source code. Ignored packages can be in this project,
-## or in a dependency.
-# ignored = ["github.com/user/project/badpkg"]
-
-## Constraints are rules for how directly imported projects
-## may be incorporated into the depgraph. They are respected by
-## dep whether coming from the Gopkg.toml of the current project or a dependency.
-# [[constraint]]
-## Required: the root import path of the project being constrained.
-# name = "github.com/user/project"
-#
-## Recommended: the version constraint to enforce for the project.
-## Only one of "branch", "version" or "revision" can be specified.
-# version = "1.0.0"
-# branch = "master"
-# revision = "abc123"
-#
-## Optional: an alternate location (URL or import path) for the project's source.
-# source = "https://github.com/myfork/package.git"
-#
-## "metadata" defines metadata about the dependency or override that could be used
-## by other independent systems. The metadata defined here will be ignored by dep.
-# [metadata]
-# key1 = "value that convey data to other systems"
-# system1-data = "value that is used by a system"
-# system2-data = "value that is used by another system"
-
-## Overrides have the same structure as [[constraint]], but supersede all
-## [[constraint]] declarations from all projects. Only [[override]] from
-## the current project's are applied.
-##
-## Overrides are a sledgehammer. Use them only as a last resort.
-# [[override]]
-## Required: the root import path of the project being constrained.
-# name = "github.com/user/project"
-#
-## Optional: specifying a version constraint override will cause all other
-## constraints on this project to be ignored; only the overridden constraint
-## need be satisfied.
-## Again, only one of "branch", "version" or "revision" can be specified.
-# version = "1.0.0"
-# branch = "master"
-# revision = "abc123"
-#
-## Optional: specifying an alternate source location as an override will
-## enforce that the alternate location is used for that project, regardless of
-## what source location any dependent projects specify.
-# source = "https://github.com/myfork/package.git"
-
-
+[prune]
+  unused-packages = true
+  non-go = true
+  go-tests = true
 
 [[constraint]]
   branch = "master"
   name = "github.com/Masterminds/sprig"
 
-[[constraint]]
-  branch = "master"
-  name = "github.com/imdario/mergo"
-
 [[constraint]]
   branch = "master"
   name = "github.com/mattn/go-zglob"
@@ -100,4 +33,4 @@
 
 [[constraint]]
   branch = "master"
-  name = "github.com/mitchellh/go-homedir"
+  name = "github.com/Masterminds/semver"

README.md

@@ -1,568 +1,12 @@
-[![Join Slack room](https://img.shields.io/badge/%23task-chat%20room-blue.svg)](https://gophers.slack.com/messages/task)
 [![Build Status](https://travis-ci.org/go-task/task.svg?branch=master)](https://travis-ci.org/go-task/task)
 
-# Task - A task runner / simpler Make alternative written in Go
+# Task
 
-Task is a simple tool that allows you to easily run development and build
-tasks. Task is written in Golang, but can be used to develop any language.
-It aims to be simpler and easier to use then [GNU Make][make].
+Task is a task runner / build tool that aims to be simpler and easier to use
+than, for example, [GNU Make][make].
 
-- [Installation](#installation)
-  - [Go](#go)
-  - [Snap](#snap)
-  - [Binary](#binary)
-- [Usage](#usage)
-  - [Environment](#environment)
-  - [OS specific task](#os-specific-task)
-  - [Task directory](#task-directory)
-  - [Task dependencies](#task-dependencies)
-  - [Calling another task](#calling-another-task)
-  - [Prevent unnecessary work](#prevent-unnecessary-work)
-  - [Variables](#variables)
-    - [Dynamic variables](#dynamic-variables)
-  - [Go's template engine](#gos-template-engine)
-  - [Help](#help)
-  - [Silent mode](#silent-mode)
-  - [Watch tasks](#watch-tasks-experimental)
-- [Examples](#examples)
-- [Task in the wild](#task-in-the-wild)
-- [Alternative task runners](#alternative-task-runners)
+---
 
-## Installation
-
-### Go
-
-If you have a [Golang][golang] environment setup, you can simply run:
-
-```bash
-go get -u -v github.com/go-task/task/cmd/task
-```
-
-### Snap
-
-Task is available for [Snapcraft][snapcraft], but keep in mind that your
-Linux distribution should allow classic confinement for Snaps to Task work
-right:
-
-```bash
-sudo snap install task
-```
-
-### Binary
-
-Or you can download the binary from the [releases][releases] page and add to
-your `PATH`. DEB and RPM packages are also available.
-The `task_checksums.txt` file contains the sha256 checksum for each file.
-
-## Usage
-
-Create a file called `Taskfile.yml` in the root of the project.
-The `cmds` attribute should contains the commands of a task.
-The example below allows compile a Go app and uses [Minify][minify] to concat
-and minify multiple CSS files into a single one.
-
-```yml
-build:
-  cmds:
-    - go build -v -i main.go
-
-assets:
-  cmds:
-    - minify -o public/style.css src/css
-```
-
-Running the tasks is as simple as running:
-
-```bash
-task assets build
-```
-
-Task uses [github.com/mvdan/sh](https://github.com/mvdan/sh), a native Go sh
-interpreter. So you can write sh/bash commands and it will work even on
-Windows, where `sh` or `bash` is usually not available. Just remember any
-executable called must be available by the OS or in PATH.
-
-If you ommit a task name, "default" will be assumed.
-
-### Environment
-
-You can specify environment variables that are added when running a command:
-
-```yml
-build:
-  cmds:
-    - echo $hallo
-  env:
-    hallo: welt
-```
-
-### OS specific task
-
-If you add a `Taskfile_{{GOOS}}.yml` you can override or amend your taskfile
-based on the operating system.
-
-Example:
-
-Taskfile.yml:
-
-```yml
-build:
-  cmds:
-    - echo "default"
-```
-
-Taskfile_linux.yml:
-
-```yml
-build:
-  cmds:
-    - echo "linux"
-```
-
-Will print out `linux` and not default.
-
-It's also possible to have OS specific `Taskvars.yml` file, like
-`Taskvars_windows.yml`, `Taskfile_linux.yml` or `Taskvars_darwin.yml`. See the
-[variables section](#variables) below.
-
-### Task directory
-
-By default, tasks will be executed in the directory where the Taskfile is
-located. But you can easily make the task run in another folder informing
-`dir`:
-
-```yml
-serve:
-  dir: public/www
-  cmds:
-    # run http server
-    - caddy
-```
-
-### Task dependencies
-
-You may have tasks that depends on others. Just pointing them on `deps` will
-make them run automatically before running the parent task:
-
-```yml
-build:
-  deps: [assets]
-  cmds:
-    - go build -v -i main.go
-
-assets:
-  cmds:
-    - minify -o public/style.css src/css
-```
-
-In the above example, `assets` will always run right before `build` if you run
-`task build`.
-
-A task can have only dependencies and no commands to group tasks together:
-
-```yml
-assets:
-  deps: [js, css]
-
-js:
-  cmds:
-    - minify -o public/script.js src/js
-
-css:
-  cmds:
-    - minify -o public/style.css src/css
-```
-
-If there are more than one dependency, they always run in parallel for better
-performance.
-
-### Calling another task
-
-When a task has many dependencies, they are executed concurrently. This will
-often result in a faster build pipeline. But in some situations you may need
-to call other tasks serially. In this case, just use the following syntax:
-
-```yml
-main-task:
-  cmds:
-    - task: task-to-be-called
-    - task: another-task
-    - echo "Both done"
-
-task-to-be-called:
-  cmds:
-    - echo "Task to be called"
-
-another-task:
-  cmds:
-    - echo "Another task"
-```
-
-Overriding variables in the called task is as simple as informing `vars`
-attribute:
-
-```yml
-main-task:
-  cmds:
-    - task: write-file
-      vars: {FILE: "hello.txt", CONTENT: "Hello!"}
-    - task: write-file
-      vars: {FILE: "world.txt", CONTENT: "World!"}
-
-write-file:
-  cmds:
-    - echo "{{.CONTENT}}" > {{.FILE}}
-```
-
-The above syntax is also supported in `deps`.
-
-> NOTE: It's also possible to call a task without any param prefixing it
-with `^`, but this syntax is deprecated:
-
-```yml
-a-task:
-  cmds:
-    - ^another-task
-
-another-task:
-  cmds:
-    - echo "Another task"
-```
-
-### Prevent unnecessary work
-
-If a task generates something, you can inform Task the source and generated
-files, so Task will prevent to run them if not necessary.
-
-```yml
-build:
-  deps: [js, css]
-  cmds:
-    - go build -v -i main.go
-
-js:
-  cmds:
-    - minify -o public/script.js src/js
-  sources:
-    - src/js/**/*.js
-  generates:
-    - public/script.js
-
-css:
-  cmds:
-    - minify -o public/style.css src/css
-  sources:
-    - src/css/**/*.css
-  generates:
-    - public/style.css
-```
-
-`sources` and `generates` can be files or file patterns. When both are given,
-Task will compare the modification date/time of the files to determine if it's
-necessary to run the task. If not, it will just print a message like
-`Task "js" is up to date`.
-
-If you prefer this check to be made by the content of the files, instead of
-its timestamp, just set the `method` property to `checksum`.
-You will probably want to ignore the `.task` folder in your `.gitignore` file
-(It's there that Task stores the last checksum).
-This feature is still experimental and can change until it's stable.
-
-```yml
-build:
-  cmds:
-    - go build .
-  sources:
-    - ./*.go
-  generates:
-    - app{{exeExt}}
-  method: checksum
-```
-
-> TIP: method `none` skips any validation and always run the task.
-
-Alternatively, you can inform a sequence of tests as `status`. If no error
-is returned (exit status 0), the task is considered up-to-date:
-
-```yml
-generate-files:
-  cmds:
-    - mkdir directory
-    - touch directory/file1.txt
-    - touch directory/file2.txt
-  # test existence of files
-  status:
-    - test -d directory
-    - test -f directory/file1.txt
-    - test -f directory/file2.txt
-```
-
-You can use `--force` or `-f` if you want to force a task to run even when
-up-to-date.
-
-### Variables
-
-When doing interpolation of variables, Task will look for the below.
-They are listed below in order of importance (e.g. most important first):
-
-- Variables given while calling a task from another.
-  (See [Calling another task](#calling-another-task) above)
-- Environment variables
-- Variables declared locally in the task
-- Variables available in the `Taskvars.yml` file
-
-Example of overriding with environment variables:
-
-```bash
-$ TASK_VARIABLE=a-value task do-something
-```
-
-Since some shells don't support above syntax to set environment variables
-(Windows) tasks also accepts a similar style when not in the beginning of
-the command. Variables given in this form are only visible to the task called
-right before.
-
-```bash
-$ task write-file FILE=file.txt "CONTENT=Hello, World!" print "MESSAGE=All done!"
-```
-
-Example of locally declared vars:
-
-```yml
-print-var:
-  cmds:
-    echo "{{.VAR}}"
-  vars:
-    VAR: Hello!
-```
-
-Example of `Taskvars.yml` file:
-
-```yml
-PROJECT_NAME: My Project
-DEV_MODE: production
-GIT_COMMIT: {sh: git log -n 1 --format=%h}
-```
-
-#### Dynamic variables
-
-The below syntax (`sh:` prop in a variable) is considered a dynamic variable.
-The value will be treated as a command and the output assigned. If there is one
-or more trailing newlines, the last newline will be trimmed.
-
-```yml
-build:
-  cmds:
-    - go build -ldflags="-X main.Version={{.GIT_COMMIT}}" main.go
-  vars:
-    GIT_COMMIT:
-      sh: git log -n 1 --format=%h
-```
-
-This works for all types of variables.
-
-> It's also possible to prefix the variable with `$` to have a dynamic
-variable, but this is now considered deprecated:
-
-```yml
-# Taskvars.yml
-
-# recommended
-GIT_COMMIT:
-  sh: git log -n 1 --format=%h
-
-# deprecated
-GIT_COMMIT: $git log -n 1 --format=%h
-```
-
-### Go's template engine
-
-Task parse commands as [Go's template engine][gotemplate] before executing
-them. Variables are accessible through dot syntax (`.VARNAME`).
-
-All functions by the Go's [sprig lib](http://masterminds.github.io/sprig/)
-are available. The following example gets the current date in a given format:
-
-```yml
-print-date:
-  cmds:
-    - echo {{now | date "2006-01-02"}}
-```
-
-Task also adds the following functions:
-
-- `OS`: Returns operating system. Possible values are "windows", "linux",
-  "darwin" (macOS) and "freebsd".
-- `ARCH`: return the architecture Task was compiled to: "386", "amd64", "arm"
-  or "s390x".
-- `splitLines`: Splits Unix (\n) and Windows (\r\n) styled newlines.
-- `catLines`: Replaces Unix (\n) and Windows (\r\n) styled newlines with a space.
-- `toSlash`: Does nothing on Unix, but on Windows converts a string from `\`
-  path format to `/`.
-- `fromSlash`: Oposite of `toSlash`. Does nothing on Unix, but on Windows
-  converts a string from `\` path format to `/`.
-- `exeExt`: Returns the right executable extension for the current OS
-  (`".exe"` for Windows, `""` for others).
-
-Example:
-
-```yml
-print-os:
-  cmds:
-    - echo '{{OS}} {{ARCH}}'
-    - echo '{{if eq OS "windows"}}windows-command{{else}}unix-command{{end}}'
-    # This will be path/to/file on Unix but path\to\file on Windows
-    - echo '{{fromSlash "path/to/file"}}'
-enumerated-file:
-  vars:
-    CONTENT: |
-      foo
-      bar
-  cmds:
-    - |
-      cat << EOF > output.txt
-      {{range $i, $line := .CONTENT | splitLines -}}
-      {{printf "%3d" $i}}: {{$line}}
-      {{end}}EOF
-```
-
-> NOTE: There are some deprecated function names still available: `ToSlash`,
-`FromSlash` and `ExeExt`. These where changed for consistency with sprig lib.
-
-### Help
-
-Running `task --list` (or `task -l`) lists all tasks with a description.
-The following taskfile:
-
-```yml
-build:
-  desc: Build the go binary.
-  cmds:
-    - go build -v -i main.go
-
-test:
-  desc: Run all the go tests.
-  cmds:
-    - go test -race ./...
-
-js:
-  cmds:
-    - minify -o public/script.js src/js
-
-css:
-  cmds:
-    - minify -o public/style.css src/css
-```
-
-would print the following output:
-
-```bash
-* build:   Build the go binary.
-* test:    Run all the go tests.
-```
-
-## Silent mode
-
-Silent mode disables echoing of commands before Task runs it.
-For the following Taskfile:
-
-```yml
-echo:
-  cmds:
-    - echo "Print something"
-```
-
-Normally this will be print:
-
-```sh
-echo "Print something"
-Print something
-```
-
-With silent mode on, the below will be print instead:
-
-```sh
-Print something
-```
-
-There's three ways to enable silent mode:
-
-* At command level:
-
-```yml
-echo:
-  cmds:
-    - cmd: echo "Print something"
-      silent: true
-```
-
-* At task level:
-
-```yml
-echo:
-  cmds:
-    - echo "Print something"
-  silent: true
-```
-
-* Or globally with `--silent` or `-s` flag
-
-If you want to suppress stdout instead, just redirect a command to `/dev/null`:
-
-```yml
-echo:
-  cmds:
-    - echo "This will print nothing" > /dev/null
-```
-
-## Watch tasks (experimental)
-
-If you give a `--watch` or `-w` argument, task will watch for files changes
-and run the task again. This requires the `sources` attribute to be given,
-so task know which files to watch.
-
-## Examples
-
-The [go-task/examples][examples] intends to be a collection of Taskfiles for
-various use cases.
-(It still lacks many examples, though. Contributions are welcome).
-
-## Task in the wild
-
-- [How I Build My Static Assets for Hugo][post-hugo]
-
-## Alternative task runners
-
-- YAML based:
-  - [tj/robo][robo]
-  - [dogtools/dog][dog]
-  - [goeuro/myke][myke]
-  - [dreadl0ck/zeus][zeus]
-  - [rliebz/tusk][tusk]
-- Go based:
-  - [go-godo/godo][godo]
-  - [markbates/grift][grift]
-  - [nstratos/make.go][make.go]
-  - [magefile/mage][mage]
-- Make based:
-  - [tj/mmake][mmake]
+See [taskfile.org](https://taskfile.org) for documentation.
 
 [make]: https://www.gnu.org/software/make/
-[releases]: https://github.com/go-task/task/releases
-[golang]: https://golang.org/
-[gotemplate]: https://golang.org/pkg/text/template/
-[robo]: https://github.com/tj/robo
-[dog]: https://github.com/dogtools/dog
-[myke]: https://github.com/goeuro/myke
-[zeus]: https://github.com/dreadl0ck/zeus
-[tusk]: https://github.com/rliebz/tusk
-[godo]: https://github.com/go-godo/godo
-[grift]: https://github.com/markbates/grift
-[make.go]: https://github.com/nstratos/make.go
-[mage]: https://github.com/magefile/mage
-[mmake]: https://github.com/tj/mmake
-[sh]: https://github.com/mvdan/sh
-[post-hugo]: https://blog.carlmjohnson.net/post/2017/hugo-asset-pipeline/
-[minify]: https://github.com/tdewolff/minify/tree/master/cmd/minify
-[examples]: https://github.com/go-task/examples
-[snapcraft]: https://snapcraft.io/

Taskfile.yml

@@ -1,55 +1,92 @@
-# compiles current source code and make "task" executable available on
-# $GOPATH/bin/task{.exe}
-install:
-  desc: Installs Task
-  cmds:
-    - go install -v -ldflags="-w -s -X main.version={{.GIT_COMMIT}}" ./cmd/task
+version: '2'
 
-dl-deps:
-  desc: Downloads cli dependencies
-  cmds:
-    - go get -u github.com/golang/lint/golint
-    - go get -u github.com/goreleaser/goreleaser
-    - go get -u github.com/asticode/go-astitodo/astitodo
-    - go get -u github.com/golang/dep/cmd/dep
+vars:
+  GIT_COMMIT:
+    sh: git log -n 1 --format=%h
 
-update-deps:
-  desc: Updates dependencies
-  cmds:
-    - dep ensure
-    - dep ensure -update
-    - dep prune
+  GO_PACKAGES:
+    sh: go list ./...
 
-clean:
-  desc: Cleans temp files and folders
-  cmds:
-    - rm -rf dist/
+tasks:
+  default:
+    cmds:
+      - task: test
 
-lint:
-  desc: Runs golint
-  cmds:
-    - golint {{.GO_PACKAGES}}
-  silent: true
+  install:
+    desc: Installs Task
+    cmds:
+      - go install -v -ldflags="-w -s -X main.version={{.GIT_COMMIT}}" ./cmd/task
+    env:
+      CGO_ENABLED: '0'
 
-test:
-  desc: Runs test suite
-  deps: [install]
-  cmds:
-    - go test {{.GO_PACKAGES}}
+  dl-deps:
+    desc: Downloads cli dependencies
+    cmds:
+      - task: go-get
+        vars: {REPO: golang.org/x/lint/golint}
+      - task: go-get
+        vars: {REPO: github.com/golang/dep/cmd/dep}
+      - task: go-get
+        vars: {REPO: github.com/goreleaser/goreleaser}
+      - task: go-get
+        vars: {REPO: github.com/goreleaser/godownloader}
 
-# https://github.com/goreleaser/goreleaser
-release:
-  desc: Release Task
-  cmds:
-    - goreleaser
+  update-deps:
+    desc: Updates dependencies
+    cmds:
+      - dep ensure
+      - dep ensure -update
 
-test-release:
-  desc: Tests release process without publishing
-  cmds:
-    - goreleaser --skip-validate --skip-publish
+  clean:
+    desc: Cleans temp files and folders
+    cmds:
+      - rm -rf dist/
 
-todo:
-  desc: Prints TODO comments present in the code
-  cmds:
-    - astitodo {{.GO_PACKAGES}}
-  silent: true
+  lint:
+    desc: Runs golint
+    cmds:
+      - golint {{catLines .GO_PACKAGES}}
+    silent: true
+
+  test:
+    desc: Runs test suite
+    deps: [install]
+    cmds:
+      - go test {{catLines .GO_PACKAGES}}
+
+  test-release:
+    desc: Tests release process without publishing
+    cmds:
+      - goreleaser --snapshot --rm-dist
+
+  generate-install-script:
+    desc: Generate install script using https://github.com/goreleaser/godownloader
+    cmds:
+      - godownloader --repo go-task/task -o install-task.sh
+      - cp ./install-task.sh ./docs/install.sh
+
+  ci:
+    cmds:
+      - task: go-get
+        vars: {REPO: golang.org/x/lint/golint}
+      - task: lint
+      - task: test
+
+  go-get:
+    cmds:
+      - go get -u {{.REPO}}
+
+  packages:
+    cmds:
+      - echo '{{.GO_PACKAGES}}'
+    silent: true
+
+  docs:install:
+    desc: Installs docsify to work the on the documentation site
+    cmds:
+      - npm install docsify-cli -g
+
+  docs:serve:
+    desc: Serves the documentation site locally
+    cmds:
+      - docsify serve docs

Taskvars.yml

@@ -1,9 +0,0 @@
-GIT_COMMIT:
-  sh: git log -n 1 --format=%h
-
-GO_PACKAGES:
-  .
-  ./cmd/task
-  ./internal/args
-  ./internal/execext
-  ./internal/status

cmd/task/task.go

@@ -17,7 +17,7 @@ var (
 	version = "master"
 )
 
-const usage = `Usage: task [-ilfwvsd] [--init] [--list] [--force] [--watch] [--verbose] [--silent] [--dir] [task...]
+const usage = `Usage: task [-ilfwvsd] [--init] [--list] [--force] [--watch] [--verbose] [--silent] [--dir] [--dry] [task...]
 
 Runs the specified task(s). Falls back to the "default" task if no task name
 was specified, or lists all tasks if an unknown task name was specified.
@@ -50,20 +50,24 @@ func main() {
 		versionFlag bool
 		init        bool
 		list        bool
+		status      bool
 		force       bool
 		watch       bool
 		verbose     bool
 		silent      bool
+		dry         bool
 		dir         string
 	)
 
 	pflag.BoolVar(&versionFlag, "version", false, "show Task version")
 	pflag.BoolVarP(&init, "init", "i", false, "creates a new Taskfile.yml in the current folder")
 	pflag.BoolVarP(&list, "list", "l", false, "lists tasks with description of current Taskfile")
+	pflag.BoolVar(&status, "status", false, "exits with non-zero exit code if any of the given tasks is not up-to-date")
 	pflag.BoolVarP(&force, "force", "f", false, "forces execution even when the task is up-to-date")
 	pflag.BoolVarP(&watch, "watch", "w", false, "enables watch of the given task")
 	pflag.BoolVarP(&verbose, "verbose", "v", false, "enables verbose mode")
 	pflag.BoolVarP(&silent, "silent", "s", false, "disables echoing")
+	pflag.BoolVar(&dry, "dry", false, "compiles and prints tasks in the order that they would be run, without executing them")
 	pflag.StringVarP(&dir, "dir", "d", "", "sets directory of execution")
 	pflag.Parse()
 
@@ -83,20 +87,26 @@ func main() {
 		return
 	}
 
+	ctx := context.Background()
+	if !watch {
+		ctx = getSignalContext()
+	}
+
 	e := task.Executor{
 		Force:   force,
 		Watch:   watch,
 		Verbose: verbose,
 		Silent:  silent,
 		Dir:     dir,
+		Dry:     dry,
 
-		Context: getSignalContext(),
+		Context: ctx,
 
 		Stdin:  os.Stdin,
 		Stdout: os.Stdout,
 		Stderr: os.Stderr,
 	}
-	if err := e.ReadTaskfile(); err != nil {
+	if err := e.Setup(); err != nil {
 		log.Fatal(err)
 	}
 
@@ -116,6 +126,13 @@ func main() {
 		log.Fatal(err)
 	}
 
+	if status {
+		if err = e.Status(calls...); err != nil {
+			log.Fatal(err)
+		}
+		return
+	}
+
 	if err := e.Run(calls...); err != nil {
 		log.Fatal(err)
 	}

completion/zsh/_task

@@ -0,0 +1,25 @@
+#compdef task
+
+# Listing commands from Taskfile.yml
+function __list() {
+    local -a scripts
+
+    if [ -f Taskfile.yml ]; then
+        scripts=($(task -l | sed '1d' | sed 's/://' | awk '{ print $2 }'))
+        _describe 'script' scripts
+    fi
+}
+
+_arguments \
+    '(-d --dir)'{-d,--dir}': :_files' \
+    '(--dry)'--dry \
+    '(-f --force)'{-f,--force} \
+    '(-i --init)'{-i,--init} \
+    '(-l --list)'{-l,--list} \
+    '(-s --silent)'{-s,--silent} \
+    '(--status)'--status \
+    '(-v --verbose)'{-v,--verbose} \
+    '(--version)'--version \
+    '(-w --watch)'{-w,--watch} \
+    '(- *)'{-h,--help} \
+    '*: :__list' \

docs/CNAME

@@ -0,0 +1 @@
+taskfile.org

docs/README.md

@@ -0,0 +1,46 @@
+# Task
+
+Task is a task runner / build tool that aims to be simpler and easier to use
+than, for example, [GNU Make][make].
+
+Since it's written in [Go][go], Task is just a single binary and has no other
+dependencies, which means you don't need to mess with any complicated install
+setups just to use a build tool.
+
+Once [installed](installation), you just need to describe your build tasks
+using a simple [YAML][yaml] schema in a file called `Taskfile.yml`:
+
+```yaml
+version: '2'
+
+tasks:
+  hello:
+    cmds:
+      - echo 'Hello World from Task!'
+    silent: true
+```
+
+And call it by running `task hello` from you terminal.
+
+The above example is just the start, you can take a look at the [usage](usage)
+guide to check the full schema documentation and Task features.
+
+## Features
+
+- [Easy installation](installation): just download a single binary, add to
+  $PATH and you're done! Or you can also install using [Homebrew][homebrew] or
+  [Snapcraft][snapcraft] if you want;
+- Available on CIs: by adding [this simple command](installation#install-script)
+  to install on your CI script and you're done to use Task as part of your CI pipeline;
+- Truly cross-platform: while most build tools only work well on Linux or macOS,
+  Task also supports Windows thanks to [this awesome shell interpreter for Go][sh];
+- Great for code generation: you can easily [prevent a task from running](usage#prevent-unnecessary-work)
+  if a given set of files haven't changed since last run (based either on its
+  timestamp or content).
+
+[make]: https://www.gnu.org/software/make/
+[go]: https://golang.org/
+[yaml]: http://yaml.org/
+[homebrew]: https://brew.sh/
+[snapcraft]: https://snapcraft.io/
+[sh]: https://mvdan.cc/sh

docs/_sidebar.md

@@ -0,0 +1,8 @@
+- [Installation](installation)
+- [Usage](usage)
+- [Taskfile Versions](taskfile_versions)
+- [Examples](examples)
+- [Releasing Task](releasing_task)
+- [Alternative Task Runners](alternative_task_runners)
+- [Sponsors and Backers](sponsors_and_backers)
+- [![Github](https://icongram.jgog.in/simple/github.svg?color=808080&size=16)Github](https://github.com/go-task/task)

docs/alternative_task_runners.md

@@ -0,0 +1,17 @@
+# Alternative task runners
+
+## YAML based
+
+- [rliebz/tusk][tusk]
+
+## Go based
+
+- [magefile/mage][mage]
+
+## Make similar
+
+- [casey/just][just]
+
+[tusk]: https://github.com/rliebz/tusk
+[mage]: https://github.com/magefile/mage
+[just]: https://github.com/casey/just

docs/examples.md

@@ -0,0 +1,7 @@
+# Examples
+
+The [go-task/examples][examples] intends to be a collection of Taskfiles for
+various use cases.
+(It still lacks many examples, though. Contributions are welcome).
+
+[examples]: https://github.com/go-task/examples

docs/index.html

@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8">
+    <title>Task</title>
+    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
+    <meta name="description" content="A task runner / simpler Make alternative written in Go">
+    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
+    <link rel="stylesheet" href="//unpkg.com/docsify-themeable/dist/css/theme-simple.css">
+    <meta name="google-site-verification" content="VGAYkbdmuaciIDGkBe-eAg9yfZg0C6ostgonbGxxOa0" />
+    <script>
+      var SeedAndDewConfig = {};
+      (function() {
+        SeedAndDewConfig['adClass'] = "snd-ad";
+        /* * * DON'T EDIT BELOW THIS LINE * * */
+        SeedAndDewConfig['projectId'] = '16e0aed0-b265-48c9-9eae-0aad56147553';
+        SeedAndDewConfig['loadStartTime'] = performance.now();
+        SeedAndDewConfig['apiVersion'] = '2018-05-28'
+        SeedAndDewConfig['sessionId'] = Math.random().toString(36).substring(2, 15);
+        var snd = document.createElement('script');
+        snd.type = 'text/javascript';
+        snd.async = true;
+        snd.src = 'https://www.seedanddew.com/static/embed.min.js';
+        (document.getElementsByTagName('head')[0] ||
+        document.getElementsByTagName('body')[0]).appendChild(snd);
+      })();
+    </script>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script>
+      window.$docsify = {
+        name: 'Task',
+        repo: 'go-task/task',
+        ga: 'UA-126286662-1',
+        themeColor: '#83d0f2',
+        loadSidebar: true,
+        auto2top: true,
+        maxLevel: 3,
+        subMaxLevel: 3
+      }
+    </script>
+    <script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
+    <script src="//unpkg.com/docsify/lib/plugins/ga.min.js"></script>
+    <script src="//unpkg.com/docsify-themeable"></script>
+    <script src="//unpkg.com/prismjs/components/prism-bash.min.js"></script>
+    <script src="//unpkg.com/prismjs/components/prism-yaml.min.js"></script>
+  </body>
+</html>

docs/install.sh

@@ -0,0 +1,390 @@
+#!/bin/sh
+set -e
+# Code generated by godownloader on 2018-04-07T17:47:38Z. DO NOT EDIT.
+#
+
+usage() {
+  this=$1
+  cat <<EOF
+$this: download go binaries for go-task/task
+
+Usage: $this [-b] bindir [-d] [tag]
+  -b sets bindir or installation directory, Defaults to ./bin
+  -d turns on debug logging
+   [tag] is a tag from
+   https://github.com/go-task/task/releases
+   If tag is missing, then the latest will be used.
+
+ Generated by godownloader
+  https://github.com/goreleaser/godownloader
+
+EOF
+  exit 2
+}
+
+parse_args() {
+  #BINDIR is ./bin unless set be ENV
+  # over-ridden by flag below
+
+  BINDIR=${BINDIR:-./bin}
+  while getopts "b:dh?" arg; do
+    case "$arg" in
+      b) BINDIR="$OPTARG" ;;
+      d) log_set_priority 10 ;;
+      h | \?) usage "$0" ;;
+    esac
+  done
+  shift $((OPTIND - 1))
+  TAG=$1
+}
+# this function wraps all the destructive operations
+# if a curl|bash cuts off the end of the script due to
+# network, either nothing will happen or will syntax error
+# out preventing half-done work
+execute() {
+  tmpdir=$(mktmpdir)
+  log_debug "downloading files into ${tmpdir}"
+  http_download "${tmpdir}/${TARBALL}" "${TARBALL_URL}"
+  http_download "${tmpdir}/${CHECKSUM}" "${CHECKSUM_URL}"
+  hash_sha256_verify "${tmpdir}/${TARBALL}" "${tmpdir}/${CHECKSUM}"
+  srcdir="${tmpdir}"
+  (cd "${tmpdir}" && untar "${TARBALL}")
+  install -d "${BINDIR}"
+  for binexe in "task" ; do
+    if [ "$OS" = "windows" ]; then
+      binexe="${binexe}.exe"
+    fi
+    install "${srcdir}/${binexe}" "${BINDIR}/"
+    log_info "installed ${BINDIR}/${binexe}"
+  done
+}
+is_supported_platform() {
+  platform=$1
+  found=1
+  case "$platform" in
+    windows/386) found=0 ;;
+    windows/amd64) found=0 ;;
+    darwin/386) found=0 ;;
+    darwin/amd64) found=0 ;;
+    linux/386) found=0 ;;
+    linux/amd64) found=0 ;;
+  esac
+  case "$platform" in
+    darwin/386) found=1 ;;
+  esac
+  return $found
+}
+check_platform() {
+  if is_supported_platform "$PLATFORM"; then
+    # optional logging goes here
+    true
+  else
+    log_crit "platform $PLATFORM is not supported.  Make sure this script is up-to-date and file request at https://github.com/${PREFIX}/issues/new"
+    exit 1
+  fi
+}
+tag_to_version() {
+  if [ -z "${TAG}" ]; then
+    log_info "checking GitHub for latest tag"
+  else
+    log_info "checking GitHub for tag '${TAG}'"
+  fi
+  REALTAG=$(github_release "$OWNER/$REPO" "${TAG}") && true
+  if test -z "$REALTAG"; then
+    log_crit "unable to find '${TAG}' - use 'latest' or see https://github.com/${PREFIX}/releases for details"
+    exit 1
+  fi
+  # if version starts with 'v', remove it
+  TAG="$REALTAG"
+  VERSION=${TAG#v}
+}
+adjust_format() {
+  # change format (tar.gz or zip) based on ARCH
+  case ${ARCH} in
+    windows) FORMAT=zip ;;
+  esac
+  true
+}
+adjust_os() {
+  # adjust archive name based on OS
+  true
+}
+adjust_arch() {
+  # adjust archive name based on ARCH
+  true
+}
+
+cat /dev/null <<EOF
+------------------------------------------------------------------------
+https://github.com/client9/shlib - portable posix shell functions
+Public domain - http://unlicense.org
+https://github.com/client9/shlib/blob/master/LICENSE.md
+but credit (and pull requests) appreciated.
+------------------------------------------------------------------------
+EOF
+is_command() {
+  command -v "$1" >/dev/null
+}
+echoerr() {
+  echo "$@" 1>&2
+}
+log_prefix() {
+  echo "$0"
+}
+_logp=6
+log_set_priority() {
+  _logp="$1"
+}
+log_priority() {
+  if test -z "$1"; then
+    echo "$_logp"
+    return
+  fi
+  [ "$1" -le "$_logp" ]
+}
+log_tag() {
+  case $1 in
+    0) echo "emerg" ;;
+    1) echo "alert" ;;
+    2) echo "crit" ;;
+    3) echo "err" ;;
+    4) echo "warning" ;;
+    5) echo "notice" ;;
+    6) echo "info" ;;
+    7) echo "debug" ;;
+    *) echo "$1" ;;
+  esac
+}
+log_debug() {
+  log_priority 7 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 7)" "$@"
+}
+log_info() {
+  log_priority 6 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 6)" "$@"
+}
+log_err() {
+  log_priority 3 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 3)" "$@"
+}
+log_crit() {
+  log_priority 2 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 2)" "$@"
+}
+uname_os() {
+  os=$(uname -s | tr '[:upper:]' '[:lower:]')
+  case "$os" in
+    msys_nt) os="windows" ;;
+  esac
+  echo "$os"
+}
+uname_arch() {
+  arch=$(uname -m)
+  case $arch in
+    x86_64) arch="amd64" ;;
+    x86) arch="386" ;;
+    i686) arch="386" ;;
+    i386) arch="386" ;;
+    aarch64) arch="arm64" ;;
+    armv5*) arch="arm5" ;;
+    armv6*) arch="arm6" ;;
+    armv7*) arch="arm7" ;;
+  esac
+  echo ${arch}
+}
+uname_os_check() {
+  os=$(uname_os)
+  case "$os" in
+    darwin) return 0 ;;
+    dragonfly) return 0 ;;
+    freebsd) return 0 ;;
+    linux) return 0 ;;
+    android) return 0 ;;
+    nacl) return 0 ;;
+    netbsd) return 0 ;;
+    openbsd) return 0 ;;
+    plan9) return 0 ;;
+    solaris) return 0 ;;
+    windows) return 0 ;;
+  esac
+  log_crit "uname_os_check '$(uname -s)' got converted to '$os' which is not a GOOS value. Please file bug at https://github.com/client9/shlib"
+  return 1
+}
+uname_arch_check() {
+  arch=$(uname_arch)
+  case "$arch" in
+    386) return 0 ;;
+    amd64) return 0 ;;
+    arm64) return 0 ;;
+    armv5) return 0 ;;
+    armv6) return 0 ;;
+    armv7) return 0 ;;
+    ppc64) return 0 ;;
+    ppc64le) return 0 ;;
+    mips) return 0 ;;
+    mipsle) return 0 ;;
+    mips64) return 0 ;;
+    mips64le) return 0 ;;
+    s390x) return 0 ;;
+    amd64p32) return 0 ;;
+  esac
+  log_crit "uname_arch_check '$(uname -m)' got converted to '$arch' which is not a GOARCH value.  Please file bug report at https://github.com/client9/shlib"
+  return 1
+}
+untar() {
+  tarball=$1
+  case "${tarball}" in
+    *.tar.gz | *.tgz) tar -xzf "${tarball}" ;;
+    *.tar) tar -xf "${tarball}" ;;
+    *.zip) unzip "${tarball}" ;;
+    *)
+      log_err "untar unknown archive format for ${tarball}"
+      return 1
+      ;;
+  esac
+}
+mktmpdir() {
+  test -z "$TMPDIR" && TMPDIR="$(mktemp -d)"
+  mkdir -p "${TMPDIR}"
+  echo "${TMPDIR}"
+}
+http_download_curl() {
+  local_file=$1
+  source_url=$2
+  header=$3
+  if [ -z "$header" ]; then
+    code=$(curl -w '%{http_code}' -sL -o "$local_file" "$source_url")
+  else
+    code=$(curl -w '%{http_code}' -sL -H "$header" -o "$local_file" "$source_url")
+  fi
+  if [ "$code" != "200" ]; then
+    log_debug "http_download_curl received HTTP status $code"
+    return 1
+  fi
+  return 0
+}
+http_download_wget() {
+  local_file=$1
+  source_url=$2
+  header=$3
+  if [ -z "$header" ]; then
+    wget -q -O "$local_file" "$source_url"
+  else
+    wget -q --header "$header" -O "$local_file" "$source_url"
+  fi
+}
+http_download() {
+  log_debug "http_download $2"
+  if is_command curl; then
+    http_download_curl "$@"
+    return
+  elif is_command wget; then
+    http_download_wget "$@"
+    return
+  fi
+  log_crit "http_download unable to find wget or curl"
+  return 1
+}
+http_copy() {
+  tmp=$(mktemp)
+  http_download "${tmp}" "$1" "$2" || return 1
+  body=$(cat "$tmp")
+  rm -f "${tmp}"
+  echo "$body"
+}
+github_release() {
+  owner_repo=$1
+  version=$2
+  test -z "$version" && version="latest"
+  giturl="https://github.com/${owner_repo}/releases/${version}"
+  json=$(http_copy "$giturl" "Accept:application/json")
+  test -z "$json" && return 1
+  version=$(echo "$json" | tr -s '\n' ' ' | sed 's/.*"tag_name":"//' | sed 's/".*//')
+  test -z "$version" && return 1
+  echo "$version"
+}
+hash_sha256() {
+  TARGET=${1:-/dev/stdin}
+  if is_command gsha256sum; then
+    hash=$(gsha256sum "$TARGET") || return 1
+    echo "$hash" | cut -d ' ' -f 1
+  elif is_command sha256sum; then
+    hash=$(sha256sum "$TARGET") || return 1
+    echo "$hash" | cut -d ' ' -f 1
+  elif is_command shasum; then
+    hash=$(shasum -a 256 "$TARGET" 2>/dev/null) || return 1
+    echo "$hash" | cut -d ' ' -f 1
+  elif is_command openssl; then
+    hash=$(openssl -dst openssl dgst -sha256 "$TARGET") || return 1
+    echo "$hash" | cut -d ' ' -f a
+  else
+    log_crit "hash_sha256 unable to find command to compute sha-256 hash"
+    return 1
+  fi
+}
+hash_sha256_verify() {
+  TARGET=$1
+  checksums=$2
+  if [ -z "$checksums" ]; then
+    log_err "hash_sha256_verify checksum file not specified in arg2"
+    return 1
+  fi
+  BASENAME=${TARGET##*/}
+  want=$(grep "${BASENAME}" "${checksums}" 2>/dev/null | tr '\t' ' ' | cut -d ' ' -f 1)
+  if [ -z "$want" ]; then
+    log_err "hash_sha256_verify unable to find checksum for '${TARGET}' in '${checksums}'"
+    return 1
+  fi
+  got=$(hash_sha256 "$TARGET")
+  if [ "$want" != "$got" ]; then
+    log_err "hash_sha256_verify checksum for '$TARGET' did not verify ${want} vs $got"
+    return 1
+  fi
+}
+cat /dev/null <<EOF
+------------------------------------------------------------------------
+End of functions from https://github.com/client9/shlib
+------------------------------------------------------------------------
+EOF
+
+PROJECT_NAME="task"
+OWNER=go-task
+REPO="task"
+BINARY=task
+FORMAT=tar.gz
+OS=$(uname_os)
+ARCH=$(uname_arch)
+PREFIX="$OWNER/$REPO"
+
+# use in logging routines
+log_prefix() {
+	echo "$PREFIX"
+}
+PLATFORM="${OS}/${ARCH}"
+GITHUB_DOWNLOAD=https://github.com/${OWNER}/${REPO}/releases/download
+
+uname_os_check "$OS"
+uname_arch_check "$ARCH"
+
+parse_args "$@"
+
+check_platform
+
+tag_to_version
+
+adjust_format
+
+adjust_os
+
+adjust_arch
+
+log_info "found version: ${VERSION} for ${TAG}/${OS}/${ARCH}"
+
+NAME=${BINARY}_${OS}_${ARCH}
+TARBALL=${NAME}.${FORMAT}
+TARBALL_URL=${GITHUB_DOWNLOAD}/${TAG}/${TARBALL}
+CHECKSUM=task_checksums.txt
+CHECKSUM_URL=${GITHUB_DOWNLOAD}/${TAG}/${CHECKSUM}
+
+
+execute

docs/installation.md

@@ -0,0 +1,53 @@
+# Installation
+
+## Binary
+
+Or you can download the binary from the [releases][releases] page and add to
+your $PATH. DEB and RPM packages are also available.
+The `task_checksums.txt` file contains the sha256 checksum for each file.
+
+## Homebrew
+
+If you're on macOS and have [Homebrew][homebrew] installed, getting Task is
+as simple as running:
+
+```bash
+brew install go-task/tap/go-task
+```
+
+## Snap
+
+Task is available for [Snapcraft][snapcraft], but keep in mind that your
+Linux distribution should allow classic confinement for Snaps to Task work
+right:
+
+```bash
+sudo snap install task
+```
+
+## Go
+
+If you have a [Go][go] environment setup, you can simply run:
+
+```bash
+go get -u -v github.com/go-task/task/cmd/task
+```
+
+## Install script
+
+We also have a [install script][installscript], which is very useful on
+scanarios like CIs. Many thanks to [godownloader][godownloader] for allowing
+easily generating this script.
+
+```bash
+curl -s https://taskfile.org/install.sh | sh
+```
+
+> This method will download the binary on the local `./bin` directory by default.
+
+[go]: https://golang.org/
+[snapcraft]: https://snapcraft.io/
+[homebrew]: https://brew.sh/
+[installscript]: https://github.com/go-task/task/blob/master/install-task.sh
+[releases]: https://github.com/go-task/task/releases
+[godownloader]: https://github.com/goreleaser/godownloader

docs/releasing_task.md

@@ -0,0 +1,32 @@
+# Releasing Task
+
+The release process of Task is done is done with the help of
+[GoReleaser][goreleaser]. You can test the release process locally by calling
+the `test-release` task of the Taskfile.
+
+The Travis CI should release automatically when a new
+Git tag is pushed to master, either for the artifact uploading (raw executables
+and DEB and RPM packages)
+
+# Homebrew
+
+To release a new version on the [Homebrew tap][homebrewtap] edit the
+[Formula/go-task.rb][gotaskrb] file, updating with the new version, download
+URL and sha256.
+
+# Snapcraft
+
+The exception is the publishing of a new version of the
+[snap package][snappackage]. This current require two steps after publishing
+the binaries:
+
+* Updating the current version on [snapcraft.yaml][snapcraftyaml];
+* Moving both `i386` and `amd64` new artifacts to the stable channel on
+the [Snapscraft dashboard][snapcraftdashboard]
+
+[goreleaser]: https://goreleaser.com/#continuous_integration
+[homebrewtap]: https://github.com/go-task/homebrew-tap
+[gotaskrb]: https://github.com/go-task/homebrew-tap/blob/master/Formula/go-task.rb
+[snappackage]: https://github.com/go-task/snap
+[snapcraftyaml]: https://github.com/go-task/snap/blob/master/snap/snapcraft.yaml#L2
+[snapcraftdashboard]: https://dashboard.snapcraft.io/

docs/sponsors_and_backers.md

@@ -0,0 +1,16 @@
+# Sponsors and Backers
+
+## Sponsors
+
+[![Sponsors](https://opencollective.com/task/sponsors.svg?width=890)][opencollective]
+
+## Backers
+
+[![Backers](https://opencollective.com/task/backers.svg?width=890)][opencollective]
+
+## Contributors
+
+[![Contributors](https://opencollective.com/task/contributors.svg?width=890)][contributors]
+
+[opencollective]: https://opencollective.com/task
+[contributors]: https://github.com/go-task/task/graphs/contributors

docs/taskfile_versions.md

@@ -0,0 +1,148 @@
+# Taskfile Versions
+
+The Taskfile syntax and features changed with time. This document explains what
+changed on each version and how to upgrade your Taskfile.
+
+## What the Taskfile version mean
+
+The Taskfile version follows the Task version. E.g. the change to Taskfile
+version `2` means that Task `v2.0.0` should be release to support it.
+
+The `version:` key on Taskfile accepts a semver string, so either `2`, `2.0` or
+`2.0.0` is accepted. You you choose to use `2.0` Task will not enable future
+`2.1` features, but if you choose to use `2`, than any `2.x.x` features will be
+available, but not `3.0.0+`.
+
+## Version 1
+
+In the first version of the `Taskfile`, the `version:` key was not available,
+because the tasks was in the root of the YAML document. Like this:
+
+```yaml
+echo:
+  cmds:
+    - echo "Hello, World!"
+```
+
+The variable priority order was also different:
+
+1. Call variables
+2. Environment
+3. Task variables
+4. `Taskvars.yml` variables
+
+## Version 2.0
+
+At version 2, we introduced the `version:` key, to allow us to envolve Task
+with new features without breaking existing Taskfiles. The new syntax is as
+follows:
+
+```yaml
+version: '2'
+
+tasks:
+  echo:
+    cmds:
+      - echo "Hello, World!"
+```
+
+Version 2 allows you to write global variables directly in the Taskfile,
+if you don't want to create a `Taskvars.yml`:
+
+```yaml
+version: '2'
+
+vars:
+  GREETING: Hello, World!
+
+tasks:
+  greet:
+    cmds:
+      - echo "{{.GREETING}}"
+```
+
+The variable priority order changed to the following:
+
+1. Task variables
+2. Call variables
+3. Taskfile variables
+4. Taskvars file variables
+5. Environment variables
+
+A new global option was added to configure the number of variables expansions
+(which default to 2):
+
+```yaml
+version: '2'
+
+expansions: 3
+
+vars:
+  FOO: foo
+  BAR: bar
+  BAZ: baz
+  FOOBAR: "{{.FOO}}{{.BAR}}"
+  FOOBARBAZ: "{{.FOOBAR}}{{.BAZ}}"
+
+tasks:
+  default:
+    cmds:
+      - echo "{{.FOOBARBAZ}}"
+```
+
+## Version 2.1
+
+Version 2.1 includes a global `output` option, to allow having more control
+over how commands output are printed to the console
+(see [documentation][output] for more info):
+
+```yaml
+version: '2'
+
+output: prefixed
+
+tasks:
+  server:
+    cmds:
+      - go run main.go
+  prefix: server
+```
+
+From this version it's not also possible to ignore errors of a command or task
+(check documentation [here][ignore_errors]):
+
+```yaml
+version: '2'
+
+tasks:
+  example-1:
+    cmds:
+      - cmd: exit 1
+        ignore_error: true
+      - echo "This will be print"
+
+  example-2:
+    cmds:
+      - exit 1
+      - echo "This will be print"
+    ignore_error: true
+```
+
+## Version 2.2
+
+Version 2.2 comes with a global `includes` options to include other
+Taskfiles:
+
+```yaml
+version: '2'
+
+includes:
+  docs: ./documentation # will look for ./documentation/Taskfile.yml
+  docker: ./DockerTasks.yml
+```
+
+Please check the [documentation][includes]
+
+[output]: usage#output-syntax
+[ignore_errors]: usage#ignore-errors
+[includes]: usage#including-other-taskfiles

docs/usage.md

@@ -0,0 +1,694 @@
+# Usage
+
+## Getting started
+
+Create a file called `Taskfile.yml` in the root of your project.
+The `cmds` attribute should contain the commands of a task.
+The example below allows compiling a Go app and uses [Minify][minify] to concat
+and minify multiple CSS files into a single one.
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    cmds:
+      - go build -v -i main.go
+
+  assets:
+    cmds:
+      - minify -o public/style.css src/css
+```
+
+Running the tasks is as simple as running:
+
+```bash
+task assets build
+```
+
+Task uses [github.com/mvdan/sh](https://github.com/mvdan/sh), a native Go sh
+interpreter. So you can write sh/bash commands and it will work even on
+Windows, where `sh` or `bash` are usually not available. Just remember any
+executable called must be available by the OS or in PATH.
+
+If you ommit a task name, "default" will be assumed.
+
+## Environment
+
+You can specify environment variables that are added when running a command:
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    cmds:
+      - echo $hallo
+    env:
+      hallo: welt
+```
+
+## Operating System specific tasks
+
+If you add a `Taskfile_{{GOOS}}.yml` you can override or amend your Taskfile
+based on the operating system.
+
+Example:
+
+Taskfile.yml:
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    cmds:
+      - echo "default"
+```
+
+Taskfile_linux.yml:
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    cmds:
+      - echo "linux"
+```
+
+Will print out `linux` and not `default`.
+
+Keep in mind that the version of the files should match. Also, when redefining
+a task the whole task is replaced, properties of the task are not merged.
+
+It's also possible to have an OS specific `Taskvars.yml` file, like
+`Taskvars_windows.yml`, `Taskfile_linux.yml`, or `Taskvars_darwin.yml`. See the
+[variables section](#variables) below.
+
+## Including other Taskfiles
+
+If you want to share tasks between different projects (Taskfiles), you can use
+the importing mechanism to include other Taskfiles using the `includes` keyword:
+
+```yaml
+version: '2'
+
+includes:
+  docs: ./documentation # will look for ./documentation/Taskfile.yml
+  docker: ./DockerTasks.yml
+```
+
+The tasks described in the given Taskfiles will be available with the informed
+namespace. So, you'd call `task docs:serve` to run the `serve` task from
+`documentation/Taskfile.yml` or `task docker:build` to run the `build` task
+from the `DockerTasks.yml` file.
+
+> The included Taskfiles must be using the same schema version the main
+> Taskfile uses.
+
+> Also, for now included Taskfiles can't include other Taskfiles.
+> This was a deliberate decision to keep use and implementation simple.
+> If you disagree, open an GitHub issue and explain your use case. =)
+
+## Task directory
+
+By default, tasks will be executed in the directory where the Taskfile is
+located. But you can easily make the task run in another folder informing
+`dir`:
+
+```yaml
+version: '2'
+
+tasks:
+  serve:
+    dir: public/www
+    cmds:
+      # run http server
+      - caddy
+```
+
+## Task dependencies
+
+You may have tasks that depend on others. Just pointing them on `deps` will
+make them run automatically before running the parent task:
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    deps: [assets]
+    cmds:
+      - go build -v -i main.go
+
+  assets:
+    cmds:
+      - minify -o public/style.css src/css
+```
+
+In the above example, `assets` will always run right before `build` if you run
+`task build`.
+
+A task can have only dependencies and no commands to group tasks together:
+
+```yaml
+version: '2'
+
+tasks:
+  assets:
+    deps: [js, css]
+
+  js:
+    cmds:
+      - minify -o public/script.js src/js
+
+  css:
+    cmds:
+      - minify -o public/style.css src/css
+```
+
+If there is more than one dependency, they always run in parallel for better
+performance.
+
+If you want to pass information to dependencies, you can do that the same
+manner as you would to [call another task](#calling-another-task):
+
+```yaml
+version: '2'
+
+tasks:
+  default:
+    deps:
+      - task: echo_sth
+        vars: {TEXT: "before 1"}
+      - task: echo_sth
+        vars: {TEXT: "before 2"}
+    cmds:
+      - echo "after"
+
+  echo_sth:
+    cmds:
+      - echo {{.TEXT}}
+```
+
+## Calling another task
+
+When a task has many dependencies, they are executed concurrently. This will
+often result in a faster build pipeline. But in some situations you may need
+to call other tasks serially. In this case, just use the following syntax:
+
+```yaml
+version: '2'
+
+tasks:
+  main-task:
+    cmds:
+      - task: task-to-be-called
+      - task: another-task
+      - echo "Both done"
+
+  task-to-be-called:
+    cmds:
+      - echo "Task to be called"
+
+  another-task:
+    cmds:
+      - echo "Another task"
+```
+
+Overriding variables in the called task is as simple as informing `vars`
+attribute:
+
+```yaml
+version: '2'
+
+tasks:
+  main-task:
+    cmds:
+      - task: write-file
+        vars: {FILE: "hello.txt", CONTENT: "Hello!"}
+      - task: write-file
+        vars: {FILE: "world.txt", CONTENT: "World!"}
+
+  write-file:
+    cmds:
+      - echo "{{.CONTENT}}" > {{.FILE}}
+```
+
+The above syntax is also supported in `deps`.
+
+## Prevent unnecessary work
+
+If a task generates something, you can inform Task the source and generated
+files, so Task will prevent to run them if not necessary.
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    deps: [js, css]
+    cmds:
+      - go build -v -i main.go
+
+  js:
+    cmds:
+      - minify -o public/script.js src/js
+    sources:
+      - src/js/**/*.js
+    generates:
+      - public/script.js
+
+  css:
+    cmds:
+      - minify -o public/style.css src/css
+    sources:
+      - src/css/**/*.css
+    generates:
+      - public/style.css
+```
+
+`sources` and `generates` can be files or file patterns. When both are given,
+Task will compare the modification date/time of the files to determine if it's
+necessary to run the task. If not, it will just print a message like
+`Task "js" is up to date`.
+
+If you prefer this check to be made by the content of the files, instead of
+its timestamp, just set the `method` property to `checksum`.
+You will probably want to ignore the `.task` folder in your `.gitignore` file
+(It's there that Task stores the last checksum).
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    cmds:
+      - go build .
+    sources:
+      - ./*.go
+    generates:
+      - app{{exeExt}}
+    method: checksum
+```
+
+> TIP: method `none` skips any validation and always run the task.
+
+Alternatively, you can inform a sequence of tests as `status`. If no error
+is returned (exit status 0), the task is considered up-to-date:
+
+```yaml
+version: '2'
+
+tasks:
+  generate-files:
+    cmds:
+      - mkdir directory
+      - touch directory/file1.txt
+      - touch directory/file2.txt
+    # test existence of files
+    status:
+      - test -d directory
+      - test -f directory/file1.txt
+      - test -f directory/file2.txt
+```
+
+You can use `--force` or `-f` if you want to force a task to run even when
+up-to-date.
+
+Also, `task --status [tasks]...` will exit with a non-zero exit code if any of
+the tasks are not up-to-date.
+
+## Variables
+
+When doing interpolation of variables, Task will look for the below.
+They are listed below in order of importance (e.g. most important first):
+
+- Variables declared locally in the task
+- Variables given while calling a task from another.
+  (See [Calling another task](#calling-another-task) above)
+- Variables declared in the `vars:` option in the `Taskfile`
+- Variables available in the `Taskvars.yml` file
+- Environment variables
+
+Example of sending parameters with environment variables:
+
+```bash
+$ TASK_VARIABLE=a-value task do-something
+```
+
+Since some shells don't support above syntax to set environment variables
+(Windows) tasks also accepts a similar style when not in the beginning of
+the command. Variables given in this form are only visible to the task called
+right before.
+
+```bash
+$ task write-file FILE=file.txt "CONTENT=Hello, World!" print "MESSAGE=All done!"
+```
+
+Example of locally declared vars:
+
+```yaml
+version: '2'
+
+tasks:
+  print-var:
+    cmds:
+      echo "{{.VAR}}"
+    vars:
+      VAR: Hello!
+```
+
+Example of global vars in a `Taskfile.yml`:
+
+```yaml
+version: '2'
+
+vars:
+  GREETING: Hello from Taskfile!
+
+tasks:
+  greet:
+    cmds:
+      - echo "{{.GREETING}}"
+```
+
+Example of `Taskvars.yml` file:
+
+```yaml
+PROJECT_NAME: My Project
+DEV_MODE: production
+GIT_COMMIT: {sh: git log -n 1 --format=%h}
+```
+
+### Variables expansion
+
+Variables are expanded 2 times by default. You can change that by setting the
+`expansions:` option. Change that will be necessary if you compose many
+variables together:
+
+```yaml
+version: '2'
+
+expansions: 3
+
+vars:
+  FOO: foo
+  BAR: bar
+  BAZ: baz
+  FOOBAR: "{{.FOO}}{{.BAR}}"
+  FOOBARBAZ: "{{.FOOBAR}}{{.BAZ}}"
+
+tasks:
+  default:
+    cmds:
+      - echo "{{.FOOBARBAZ}}"
+```
+
+### Dynamic variables
+
+The below syntax (`sh:` prop in a variable) is considered a dynamic variable.
+The value will be treated as a command and the output assigned. If there is one
+or more trailing newlines, the last newline will be trimmed.
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    cmds:
+      - go build -ldflags="-X main.Version={{.GIT_COMMIT}}" main.go
+    vars:
+      GIT_COMMIT:
+        sh: git log -n 1 --format=%h
+```
+
+This works for all types of variables.
+
+## Go's template engine
+
+Task parse commands as [Go's template engine][gotemplate] before executing
+them. Variables are accessible through dot syntax (`.VARNAME`).
+
+All functions by the Go's [sprig lib](http://masterminds.github.io/sprig/)
+are available. The following example gets the current date in a given format:
+
+```yaml
+version: '2'
+
+tasks:
+  print-date:
+    cmds:
+      - echo {{now | date "2006-01-02"}}
+```
+
+Task also adds the following functions:
+
+- `OS`: Returns operating system. Possible values are "windows", "linux",
+  "darwin" (macOS) and "freebsd".
+- `ARCH`: return the architecture Task was compiled to: "386", "amd64", "arm"
+  or "s390x".
+- `splitLines`: Splits Unix (\n) and Windows (\r\n) styled newlines.
+- `catLines`: Replaces Unix (\n) and Windows (\r\n) styled newlines with a space.
+- `toSlash`: Does nothing on Unix, but on Windows converts a string from `\`
+  path format to `/`.
+- `fromSlash`: Oposite of `toSlash`. Does nothing on Unix, but on Windows
+  converts a string from `\` path format to `/`.
+- `exeExt`: Returns the right executable extension for the current OS
+  (`".exe"` for Windows, `""` for others).
+
+Example:
+
+```yaml
+version: '2'
+
+tasks:
+  print-os:
+    cmds:
+      - echo '{{OS}} {{ARCH}}'
+      - echo '{{if eq OS "windows"}}windows-command{{else}}unix-command{{end}}'
+      # This will be path/to/file on Unix but path\to\file on Windows
+      - echo '{{fromSlash "path/to/file"}}'
+  enumerated-file:
+    vars:
+      CONTENT: |
+        foo
+        bar
+    cmds:
+      - |
+        cat << EOF > output.txt
+        {{range $i, $line := .CONTENT | splitLines -}}
+        {{printf "%3d" $i}}: {{$line}}
+        {{end}}EOF
+```
+
+## Help
+
+Running `task --list` (or `task -l`) lists all tasks with a description.
+The following taskfile:
+
+```yaml
+version: '2'
+
+tasks:
+  build:
+    desc: Build the go binary.
+    cmds:
+      - go build -v -i main.go
+
+  test:
+    desc: Run all the go tests.
+    cmds:
+      - go test -race ./...
+
+  js:
+    cmds:
+      - minify -o public/script.js src/js
+
+  css:
+    cmds:
+      - minify -o public/style.css src/css
+```
+
+would print the following output:
+
+```bash
+* build:   Build the go binary.
+* test:    Run all the go tests.
+```
+
+## Silent mode
+
+Silent mode disables echoing of commands before Task runs it.
+For the following Taskfile:
+
+```yaml
+version: '2'
+
+tasks:
+  echo:
+    cmds:
+      - echo "Print something"
+```
+
+Normally this will be print:
+
+```sh
+echo "Print something"
+Print something
+```
+
+With silent mode on, the below will be print instead:
+
+```sh
+Print something
+```
+
+There's three ways to enable silent mode:
+
+* At command level:
+
+```yaml
+version: '2'
+
+tasks:
+  echo:
+    cmds:
+      - cmd: echo "Print something"
+        silent: true
+```
+
+* At task level:
+
+```yaml
+version: '2'
+
+tasks:
+  echo:
+    cmds:
+      - echo "Print something"
+    silent: true
+```
+
+* Or globally with `--silent` or `-s` flag
+
+If you want to suppress stdout instead, just redirect a command to `/dev/null`:
+
+```yaml
+version: '2'
+
+tasks:
+  echo:
+    cmds:
+      - echo "This will print nothing" > /dev/null
+```
+
+## Dry run mode
+
+Dry run mode (`--dry`) compiles and steps through each task, printing the commands
+that would be run without executing them. This is useful for debugging your Taskfiles.
+
+## Ignore errors
+
+You have the option to ignore errors during command execution.
+Given the following Taskfile:
+
+```yaml
+version: '2'
+
+tasks:
+  echo:
+    cmds:
+      - exit 1
+      - echo "Hello World"
+```
+
+Task will abort the execution after running `exit 1` because the status code `1` stands for `EXIT_FAILURE`.
+However it is possible to continue with execution using `ignore_error`:
+
+```yaml
+version: '2'
+
+tasks:
+  echo:
+    cmds:
+      - cmd: exit 1
+        ignore_error: true
+      - echo "Hello World"
+```
+
+`ignore_error` can also be set for a task, which mean errors will be supressed
+for all commands. But keep in mind this option won't propagate to other tasks
+called either by `deps` or `cmds`!
+
+## Output syntax
+
+By default, Task just redirect the STDOUT and STDERR of the running commands
+to the shell in real time. This is good for having live feedback for log
+printed by commands, but the output can become messy if you have multiple
+commands running at the same time and printing lots of stuff.
+
+To make this more customizable, there are currently three different output
+options you can choose:
+
+- `interleaved` (default)
+- `group`
+- `prefixed`
+
+To choose another one, just set it to root in the Taskfile:
+
+```yaml
+version: '2'
+
+output: 'group'
+
+tasks:
+  # ...
+```
+
+ The `group` output will print the entire output of a command once, after it
+ finishes, so you won't have live feedback for commands that take a long time
+ to run.
+
+ The `prefix` output will prefix every line printed by a command with
+ `[task-name] ` as the prefix, but you can customize the prefix for a command
+ with the `prefix:` attribute:
+
+ ```yaml
+version: '2'
+
+output: prefixed
+
+tasks:
+  default:
+    deps:
+      - task: print
+        vars: {TEXT: foo}
+      - task: print
+        vars: {TEXT: bar}
+      - task: print
+        vars: {TEXT: baz}
+
+  print:
+    cmds:
+      - echo "{{.TEXT}}"
+    prefix: "print-{{.TEXT}}"
+    silent: true
+```
+
+```bash
+$ task default
+[print-foo] foo
+[print-bar] bar
+[print-baz] baz
+```
+
+## Watch tasks
+
+If you give a `--watch` or `-w` argument, task will watch for file changes
+and run the task again. This requires the `sources` attribute to be given,
+so task know which files to watch.
+
+[gotemplate]: https://golang.org/pkg/text/template/
+[minify]: https://github.com/tdewolff/minify/tree/master/cmd/minify

errors.go

@@ -10,14 +10,6 @@ var (
 	ErrTaskfileAlreadyExists = errors.New("task: A Taskfile already exists")
 )
 
-type taskFileNotFound struct {
-	taskFile string
-}
-
-func (err taskFileNotFound) Error() string {
-	return fmt.Sprintf(`task: No task file found (is it named "%s"?). Use "task --init" to create a new one`, err.taskFile)
-}
-
 type taskNotFoundError struct {
 	taskName string
 }
@@ -35,31 +27,6 @@ func (err *taskRunError) Error() string {
 	return fmt.Sprintf(`task: Failed to run task "%s": %v`, err.taskName, err.err)
 }
 
-type cyclicDepError struct {
-	taskName string
-}
-
-func (err *cyclicDepError) Error() string {
-	return fmt.Sprintf(`task: Cyclic dependency of task "%s" detected`, err.taskName)
-}
-
-type cantWatchNoSourcesError struct {
-	taskName string
-}
-
-func (err *cantWatchNoSourcesError) Error() string {
-	return fmt.Sprintf(`task: Can't watch task "%s" because it has no specified sources`, err.taskName)
-}
-
-type dynamicVarError struct {
-	cause error
-	cmd   string
-}
-
-func (err *dynamicVarError) Error() string {
-	return fmt.Sprintf(`task: Command "%s" in taskvars file failed: %s`, err.cmd, err.cause)
-}
-
 // MaximumTaskCallExceededError is returned when a task is called too
 // many times. In this case you probably have a cyclic dependendy or
 // infinite loop

help.go

@@ -4,31 +4,34 @@ import (
 	"fmt"
 	"sort"
 	"text/tabwriter"
+
+	"github.com/go-task/task/internal/taskfile"
 )
 
 // PrintTasksHelp prints help os tasks that have a description
 func (e *Executor) PrintTasksHelp() {
 	tasks := e.tasksWithDesc()
 	if len(tasks) == 0 {
-		e.outf("task: No tasks with description available")
+		e.Logger.Outf("task: No tasks with description available")
 		return
 	}
-	e.outf("task: Available tasks for this project:")
+	e.Logger.Outf("task: Available tasks for this project:")
 
 	// Format in tab-separated columns with a tab stop of 8.
 	w := tabwriter.NewWriter(e.Stdout, 0, 8, 0, '\t', 0)
 	for _, task := range tasks {
-		fmt.Fprintln(w, fmt.Sprintf("* %s: \t%s", task, e.Tasks[task].Desc))
+		fmt.Fprintf(w, "* %s: \t%s\n", task.Task, task.Desc)
 	}
 	w.Flush()
 }
 
-func (e *Executor) tasksWithDesc() (tasks []string) {
-	for name, task := range e.Tasks {
+func (e *Executor) tasksWithDesc() (tasks []*taskfile.Task) {
+	tasks = make([]*taskfile.Task, 0, len(e.Taskfile.Tasks))
+	for _, task := range e.Taskfile.Tasks {
 		if task.Desc != "" {
-			tasks = append(tasks, name)
+			tasks = append(tasks, task)
 		}
 	}
-	sort.Strings(tasks)
+	sort.Slice(tasks, func(i, j int) bool { return tasks[i].Task < tasks[j].Task })
 	return
 }

init.go

@@ -10,22 +10,27 @@ import (
 
 const defaultTaskfile = `# github.com/go-task/task
 
-default:
-  cmds:
-    - echo "Hello, World!"
+version: '2'
+
+vars:
+  GREETING: Hello, World!
+
+tasks:
+  default:
+    cmds:
+      - echo "{{.GREETING}}"
+    silent: true
 `
 
 // InitTaskfile Taskfile creates a new Taskfile
-func InitTaskfile(w io.Writer, path string) error {
-	for _, f := range []string{"Taskfile.yml", "Taskfile.toml", "Taskfile.json"} {
-		f = filepath.Join(path, f)
-		if _, err := os.Stat(f); err == nil {
-			return ErrTaskfileAlreadyExists
-		}
+func InitTaskfile(w io.Writer, dir string) error {
+	f := filepath.Join(dir, "Taskfile.yml")
+
+	if _, err := os.Stat(f); err == nil {
+		return ErrTaskfileAlreadyExists
 	}
 
-	f := filepath.Join(path, "Taskfile.yml")
-	if err := ioutil.WriteFile(f, []byte(defaultTaskfile), 0666); err != nil {
+	if err := ioutil.WriteFile(f, []byte(defaultTaskfile), 0644); err != nil {
 		return err
 	}
 	fmt.Fprintf(w, "Taskfile.yml created in the current directory\n")

install-task.sh

@@ -0,0 +1,390 @@
+#!/bin/sh
+set -e
+# Code generated by godownloader on 2018-04-07T17:47:38Z. DO NOT EDIT.
+#
+
+usage() {
+  this=$1
+  cat <<EOF
+$this: download go binaries for go-task/task
+
+Usage: $this [-b] bindir [-d] [tag]
+  -b sets bindir or installation directory, Defaults to ./bin
+  -d turns on debug logging
+   [tag] is a tag from
+   https://github.com/go-task/task/releases
+   If tag is missing, then the latest will be used.
+
+ Generated by godownloader
+  https://github.com/goreleaser/godownloader
+
+EOF
+  exit 2
+}
+
+parse_args() {
+  #BINDIR is ./bin unless set be ENV
+  # over-ridden by flag below
+
+  BINDIR=${BINDIR:-./bin}
+  while getopts "b:dh?" arg; do
+    case "$arg" in
+      b) BINDIR="$OPTARG" ;;
+      d) log_set_priority 10 ;;
+      h | \?) usage "$0" ;;
+    esac
+  done
+  shift $((OPTIND - 1))
+  TAG=$1
+}
+# this function wraps all the destructive operations
+# if a curl|bash cuts off the end of the script due to
+# network, either nothing will happen or will syntax error
+# out preventing half-done work
+execute() {
+  tmpdir=$(mktmpdir)
+  log_debug "downloading files into ${tmpdir}"
+  http_download "${tmpdir}/${TARBALL}" "${TARBALL_URL}"
+  http_download "${tmpdir}/${CHECKSUM}" "${CHECKSUM_URL}"
+  hash_sha256_verify "${tmpdir}/${TARBALL}" "${tmpdir}/${CHECKSUM}"
+  srcdir="${tmpdir}"
+  (cd "${tmpdir}" && untar "${TARBALL}")
+  install -d "${BINDIR}"
+  for binexe in "task" ; do
+    if [ "$OS" = "windows" ]; then
+      binexe="${binexe}.exe"
+    fi
+    install "${srcdir}/${binexe}" "${BINDIR}/"
+    log_info "installed ${BINDIR}/${binexe}"
+  done
+}
+is_supported_platform() {
+  platform=$1
+  found=1
+  case "$platform" in
+    windows/386) found=0 ;;
+    windows/amd64) found=0 ;;
+    darwin/386) found=0 ;;
+    darwin/amd64) found=0 ;;
+    linux/386) found=0 ;;
+    linux/amd64) found=0 ;;
+  esac
+  case "$platform" in
+    darwin/386) found=1 ;;
+  esac
+  return $found
+}
+check_platform() {
+  if is_supported_platform "$PLATFORM"; then
+    # optional logging goes here
+    true
+  else
+    log_crit "platform $PLATFORM is not supported.  Make sure this script is up-to-date and file request at https://github.com/${PREFIX}/issues/new"
+    exit 1
+  fi
+}
+tag_to_version() {
+  if [ -z "${TAG}" ]; then
+    log_info "checking GitHub for latest tag"
+  else
+    log_info "checking GitHub for tag '${TAG}'"
+  fi
+  REALTAG=$(github_release "$OWNER/$REPO" "${TAG}") && true
+  if test -z "$REALTAG"; then
+    log_crit "unable to find '${TAG}' - use 'latest' or see https://github.com/${PREFIX}/releases for details"
+    exit 1
+  fi
+  # if version starts with 'v', remove it
+  TAG="$REALTAG"
+  VERSION=${TAG#v}
+}
+adjust_format() {
+  # change format (tar.gz or zip) based on ARCH
+  case ${ARCH} in
+    windows) FORMAT=zip ;;
+  esac
+  true
+}
+adjust_os() {
+  # adjust archive name based on OS
+  true
+}
+adjust_arch() {
+  # adjust archive name based on ARCH
+  true
+}
+
+cat /dev/null <<EOF
+------------------------------------------------------------------------
+https://github.com/client9/shlib - portable posix shell functions
+Public domain - http://unlicense.org
+https://github.com/client9/shlib/blob/master/LICENSE.md
+but credit (and pull requests) appreciated.
+------------------------------------------------------------------------
+EOF
+is_command() {
+  command -v "$1" >/dev/null
+}
+echoerr() {
+  echo "$@" 1>&2
+}
+log_prefix() {
+  echo "$0"
+}
+_logp=6
+log_set_priority() {
+  _logp="$1"
+}
+log_priority() {
+  if test -z "$1"; then
+    echo "$_logp"
+    return
+  fi
+  [ "$1" -le "$_logp" ]
+}
+log_tag() {
+  case $1 in
+    0) echo "emerg" ;;
+    1) echo "alert" ;;
+    2) echo "crit" ;;
+    3) echo "err" ;;
+    4) echo "warning" ;;
+    5) echo "notice" ;;
+    6) echo "info" ;;
+    7) echo "debug" ;;
+    *) echo "$1" ;;
+  esac
+}
+log_debug() {
+  log_priority 7 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 7)" "$@"
+}
+log_info() {
+  log_priority 6 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 6)" "$@"
+}
+log_err() {
+  log_priority 3 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 3)" "$@"
+}
+log_crit() {
+  log_priority 2 || return 0
+  echoerr "$(log_prefix)" "$(log_tag 2)" "$@"
+}
+uname_os() {
+  os=$(uname -s | tr '[:upper:]' '[:lower:]')
+  case "$os" in
+    msys_nt) os="windows" ;;
+  esac
+  echo "$os"
+}
+uname_arch() {
+  arch=$(uname -m)
+  case $arch in
+    x86_64) arch="amd64" ;;
+    x86) arch="386" ;;
+    i686) arch="386" ;;
+    i386) arch="386" ;;
+    aarch64) arch="arm64" ;;
+    armv5*) arch="arm5" ;;
+    armv6*) arch="arm6" ;;
+    armv7*) arch="arm7" ;;
+  esac
+  echo ${arch}
+}
+uname_os_check() {
+  os=$(uname_os)
+  case "$os" in
+    darwin) return 0 ;;
+    dragonfly) return 0 ;;
+    freebsd) return 0 ;;
+    linux) return 0 ;;
+    android) return 0 ;;
+    nacl) return 0 ;;
+    netbsd) return 0 ;;
+    openbsd) return 0 ;;
+    plan9) return 0 ;;
+    solaris) return 0 ;;
+    windows) return 0 ;;
+  esac
+  log_crit "uname_os_check '$(uname -s)' got converted to '$os' which is not a GOOS value. Please file bug at https://github.com/client9/shlib"
+  return 1
+}
+uname_arch_check() {
+  arch=$(uname_arch)
+  case "$arch" in
+    386) return 0 ;;
+    amd64) return 0 ;;
+    arm64) return 0 ;;
+    armv5) return 0 ;;
+    armv6) return 0 ;;
+    armv7) return 0 ;;
+    ppc64) return 0 ;;
+    ppc64le) return 0 ;;
+    mips) return 0 ;;
+    mipsle) return 0 ;;
+    mips64) return 0 ;;
+    mips64le) return 0 ;;
+    s390x) return 0 ;;
+    amd64p32) return 0 ;;
+  esac
+  log_crit "uname_arch_check '$(uname -m)' got converted to '$arch' which is not a GOARCH value.  Please file bug report at https://github.com/client9/shlib"
+  return 1
+}
+untar() {
+  tarball=$1
+  case "${tarball}" in
+    *.tar.gz | *.tgz) tar -xzf "${tarball}" ;;
+    *.tar) tar -xf "${tarball}" ;;
+    *.zip) unzip "${tarball}" ;;
+    *)
+      log_err "untar unknown archive format for ${tarball}"
+      return 1
+      ;;
+  esac
+}
+mktmpdir() {
+  test -z "$TMPDIR" && TMPDIR="$(mktemp -d)"
+  mkdir -p "${TMPDIR}"
+  echo "${TMPDIR}"
+}
+http_download_curl() {
+  local_file=$1
+  source_url=$2
+  header=$3
+  if [ -z "$header" ]; then
+    code=$(curl -w '%{http_code}' -sL -o "$local_file" "$source_url")
+  else
+    code=$(curl -w '%{http_code}' -sL -H "$header" -o "$local_file" "$source_url")
+  fi
+  if [ "$code" != "200" ]; then
+    log_debug "http_download_curl received HTTP status $code"
+    return 1
+  fi
+  return 0
+}
+http_download_wget() {
+  local_file=$1
+  source_url=$2
+  header=$3
+  if [ -z "$header" ]; then
+    wget -q -O "$local_file" "$source_url"
+  else
+    wget -q --header "$header" -O "$local_file" "$source_url"
+  fi
+}
+http_download() {
+  log_debug "http_download $2"
+  if is_command curl; then
+    http_download_curl "$@"
+    return
+  elif is_command wget; then
+    http_download_wget "$@"
+    return
+  fi
+  log_crit "http_download unable to find wget or curl"
+  return 1
+}
+http_copy() {
+  tmp=$(mktemp)
+  http_download "${tmp}" "$1" "$2" || return 1
+  body=$(cat "$tmp")
+  rm -f "${tmp}"
+  echo "$body"
+}
+github_release() {
+  owner_repo=$1
+  version=$2
+  test -z "$version" && version="latest"
+  giturl="https://github.com/${owner_repo}/releases/${version}"
+  json=$(http_copy "$giturl" "Accept:application/json")
+  test -z "$json" && return 1
+  version=$(echo "$json" | tr -s '\n' ' ' | sed 's/.*"tag_name":"//' | sed 's/".*//')
+  test -z "$version" && return 1
+  echo "$version"
+}
+hash_sha256() {
+  TARGET=${1:-/dev/stdin}
+  if is_command gsha256sum; then
+    hash=$(gsha256sum "$TARGET") || return 1
+    echo "$hash" | cut -d ' ' -f 1
+  elif is_command sha256sum; then
+    hash=$(sha256sum "$TARGET") || return 1
+    echo "$hash" | cut -d ' ' -f 1
+  elif is_command shasum; then
+    hash=$(shasum -a 256 "$TARGET" 2>/dev/null) || return 1
+    echo "$hash" | cut -d ' ' -f 1
+  elif is_command openssl; then
+    hash=$(openssl -dst openssl dgst -sha256 "$TARGET") || return 1
+    echo "$hash" | cut -d ' ' -f a
+  else
+    log_crit "hash_sha256 unable to find command to compute sha-256 hash"
+    return 1
+  fi
+}
+hash_sha256_verify() {
+  TARGET=$1
+  checksums=$2
+  if [ -z "$checksums" ]; then
+    log_err "hash_sha256_verify checksum file not specified in arg2"
+    return 1
+  fi
+  BASENAME=${TARGET##*/}
+  want=$(grep "${BASENAME}" "${checksums}" 2>/dev/null | tr '\t' ' ' | cut -d ' ' -f 1)
+  if [ -z "$want" ]; then
+    log_err "hash_sha256_verify unable to find checksum for '${TARGET}' in '${checksums}'"
+    return 1
+  fi
+  got=$(hash_sha256 "$TARGET")
+  if [ "$want" != "$got" ]; then
+    log_err "hash_sha256_verify checksum for '$TARGET' did not verify ${want} vs $got"
+    return 1
+  fi
+}
+cat /dev/null <<EOF
+------------------------------------------------------------------------
+End of functions from https://github.com/client9/shlib
+------------------------------------------------------------------------
+EOF
+
+PROJECT_NAME="task"
+OWNER=go-task
+REPO="task"
+BINARY=task
+FORMAT=tar.gz
+OS=$(uname_os)
+ARCH=$(uname_arch)
+PREFIX="$OWNER/$REPO"
+
+# use in logging routines
+log_prefix() {
+	echo "$PREFIX"
+}
+PLATFORM="${OS}/${ARCH}"
+GITHUB_DOWNLOAD=https://github.com/${OWNER}/${REPO}/releases/download
+
+uname_os_check "$OS"
+uname_arch_check "$ARCH"
+
+parse_args "$@"
+
+check_platform
+
+tag_to_version
+
+adjust_format
+
+adjust_os
+
+adjust_arch
+
+log_info "found version: ${VERSION} for ${TAG}/${OS}/${ARCH}"
+
+NAME=${BINARY}_${OS}_${ARCH}
+TARBALL=${NAME}.${FORMAT}
+TARBALL_URL=${GITHUB_DOWNLOAD}/${TAG}/${TARBALL}
+CHECKSUM=task_checksums.txt
+CHECKSUM_URL=${GITHUB_DOWNLOAD}/${TAG}/${CHECKSUM}
+
+
+execute

internal/args/args.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"strings"
 
-	"github.com/go-task/task"
+	"github.com/go-task/task/internal/taskfile"
 )
 
 var (
@@ -13,12 +13,12 @@ var (
 )
 
 // Parse parses command line argument: tasks and vars of each task
-func Parse(args ...string) ([]task.Call, error) {
-	var calls []task.Call
+func Parse(args ...string) ([]taskfile.Call, error) {
+	var calls []taskfile.Call
 
 	for _, arg := range args {
 		if !strings.Contains(arg, "=") {
-			calls = append(calls, task.Call{Task: arg})
+			calls = append(calls, taskfile.Call{Task: arg})
 			continue
 		}
 		if len(calls) < 1 {
@@ -26,11 +26,11 @@ func Parse(args ...string) ([]task.Call, error) {
 		}
 
 		if calls[len(calls)-1].Vars == nil {
-			calls[len(calls)-1].Vars = make(task.Vars)
+			calls[len(calls)-1].Vars = make(taskfile.Vars)
 		}
 
 		pair := strings.SplitN(arg, "=", 2)
-		calls[len(calls)-1].Vars[pair[0]] = task.Var{Static: pair[1]}
+		calls[len(calls)-1].Vars[pair[0]] = taskfile.Var{Static: pair[1]}
 	}
 	return calls, nil
 }

internal/args/args_test.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/go-task/task"
 	"github.com/go-task/task/internal/args"
+	"github.com/go-task/task/internal/taskfile"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -13,12 +13,12 @@ import (
 func TestArgs(t *testing.T) {
 	tests := []struct {
 		Args     []string
-		Expected []task.Call
+		Expected []taskfile.Call
 		Err      error
 	}{
 		{
 			Args: []string{"task-a", "task-b", "task-c"},
-			Expected: []task.Call{
+			Expected: []taskfile.Call{
 				{Task: "task-a"},
 				{Task: "task-b"},
 				{Task: "task-c"},
@@ -26,30 +26,30 @@ func TestArgs(t *testing.T) {
 		},
 		{
 			Args: []string{"task-a", "FOO=bar", "task-b", "task-c", "BAR=baz", "BAZ=foo"},
-			Expected: []task.Call{
+			Expected: []taskfile.Call{
 				{
 					Task: "task-a",
-					Vars: task.Vars{
-						"FOO": task.Var{Static: "bar"},
+					Vars: taskfile.Vars{
+						"FOO": taskfile.Var{Static: "bar"},
 					},
 				},
 				{Task: "task-b"},
 				{
 					Task: "task-c",
-					Vars: task.Vars{
-						"BAR": task.Var{Static: "baz"},
-						"BAZ": task.Var{Static: "foo"},
+					Vars: taskfile.Vars{
+						"BAR": taskfile.Var{Static: "baz"},
+						"BAZ": taskfile.Var{Static: "foo"},
 					},
 				},
 			},
 		},
 		{
 			Args: []string{"task-a", "CONTENT=with some spaces"},
-			Expected: []task.Call{
+			Expected: []taskfile.Call{
 				{
 					Task: "task-a",
-					Vars: task.Vars{
-						"CONTENT": task.Var{Static: "with some spaces"},
+					Vars: taskfile.Vars{
+						"CONTENT": taskfile.Var{Static: "with some spaces"},
 					},
 				},
 			},

internal/compiler/compiler.go

@@ -0,0 +1,12 @@
+package compiler
+
+import (
+	"github.com/go-task/task/internal/taskfile"
+)
+
+// Compiler handles compilation of a task before its execution.
+// E.g. variable merger, template processing, etc.
+type Compiler interface {
+	GetVariables(t *taskfile.Task, call taskfile.Call) (taskfile.Vars, error)
+	HandleDynamicVar(v taskfile.Var) (string, error)
+}

internal/compiler/env.go

@@ -0,0 +1,24 @@
+package compiler
+
+import (
+	"os"
+	"strings"
+
+	"github.com/go-task/task/internal/taskfile"
+)
+
+// GetEnviron the all return all environment variables encapsulated on a
+// taskfile.Vars
+func GetEnviron() taskfile.Vars {
+	var (
+		env = os.Environ()
+		m   = make(taskfile.Vars, len(env))
+	)
+
+	for _, e := range env {
+		keyVal := strings.SplitN(e, "=", 2)
+		key, val := keyVal[0], keyVal[1]
+		m[key] = taskfile.Var{Static: val}
+	}
+	return m
+}

internal/compiler/v1/compiler_v1.go

@@ -0,0 +1,137 @@
+package v1
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"strings"
+	"sync"
+
+	"github.com/go-task/task/internal/compiler"
+	"github.com/go-task/task/internal/execext"
+	"github.com/go-task/task/internal/logger"
+	"github.com/go-task/task/internal/taskfile"
+	"github.com/go-task/task/internal/templater"
+)
+
+var _ compiler.Compiler = &CompilerV1{}
+
+type CompilerV1 struct {
+	Dir  string
+	Vars taskfile.Vars
+
+	Logger *logger.Logger
+
+	dynamicCache   map[string]string
+	muDynamicCache sync.Mutex
+}
+
+// GetVariables returns fully resolved variables following the priority order:
+// 1. Call variables (should already have been resolved)
+// 2. Environment (should not need to be resolved)
+// 3. Task variables, resolved with access to:
+//    - call, taskvars and environment variables
+// 4. Taskvars variables, resolved with access to:
+//    - environment variables
+func (c *CompilerV1) GetVariables(t *taskfile.Task, call taskfile.Call) (taskfile.Vars, error) {
+	merge := func(dest taskfile.Vars, srcs ...taskfile.Vars) {
+		for _, src := range srcs {
+			for k, v := range src {
+				dest[k] = v
+			}
+		}
+	}
+	varsKeys := func(srcs ...taskfile.Vars) []string {
+		m := make(map[string]struct{})
+		for _, src := range srcs {
+			for k := range src {
+				m[k] = struct{}{}
+			}
+		}
+		lst := make([]string, 0, len(m))
+		for k := range m {
+			lst = append(lst, k)
+		}
+		return lst
+	}
+	replaceVars := func(dest taskfile.Vars, keys []string) error {
+		r := templater.Templater{Vars: dest}
+		for _, k := range keys {
+			v := dest[k]
+			dest[k] = taskfile.Var{
+				Static: r.Replace(v.Static),
+				Sh:     r.Replace(v.Sh),
+			}
+		}
+		return r.Err()
+	}
+	resolveShell := func(dest taskfile.Vars, keys []string) error {
+		for _, k := range keys {
+			v := dest[k]
+			static, err := c.HandleDynamicVar(v)
+			if err != nil {
+				return err
+			}
+			dest[k] = taskfile.Var{Static: static}
+		}
+		return nil
+	}
+	update := func(dest taskfile.Vars, srcs ...taskfile.Vars) error {
+		merge(dest, srcs...)
+		// updatedKeys ensures template evaluation is run only once.
+		updatedKeys := varsKeys(srcs...)
+		if err := replaceVars(dest, updatedKeys); err != nil {
+			return err
+		}
+		return resolveShell(dest, updatedKeys)
+	}
+
+	// Resolve taskvars variables to "result" with environment override variables.
+	override := compiler.GetEnviron()
+	result := make(taskfile.Vars, len(c.Vars)+len(t.Vars)+len(override))
+	if err := update(result, c.Vars, override); err != nil {
+		return nil, err
+	}
+	// Resolve task variables to "result" with environment and call override variables.
+	merge(override, call.Vars)
+	if err := update(result, t.Vars, override); err != nil {
+		return nil, err
+	}
+	return result, nil
+}
+
+func (c *CompilerV1) HandleDynamicVar(v taskfile.Var) (string, error) {
+	if v.Static != "" || v.Sh == "" {
+		return v.Static, nil
+	}
+
+	c.muDynamicCache.Lock()
+	defer c.muDynamicCache.Unlock()
+
+	if c.dynamicCache == nil {
+		c.dynamicCache = make(map[string]string, 30)
+	}
+	if result, ok := c.dynamicCache[v.Sh]; ok {
+		return result, nil
+	}
+
+	var stdout bytes.Buffer
+	opts := &execext.RunCommandOptions{
+		Command: v.Sh,
+		Dir:     c.Dir,
+		Stdout:  &stdout,
+		Stderr:  c.Logger.Stderr,
+	}
+	if err := execext.RunCommand(context.Background(), opts); err != nil {
+		return "", fmt.Errorf(`task: Command "%s" in taskvars file failed: %s`, opts.Command, err)
+	}
+
+	// Trim a single trailing newline from the result to make most command
+	// output easier to use in shell commands.
+	result := strings.TrimSuffix(stdout.String(), "\n")
+
+	c.dynamicCache[v.Sh] = result
+	c.Logger.VerboseErrf(`task: dynamic variable: '%s' result: '%s'`, v.Sh, result)
+
+	return result, nil
+}

internal/compiler/v2/compiler_v2.go

@@ -0,0 +1,109 @@
+package v2
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"strings"
+	"sync"
+
+	"github.com/go-task/task/internal/compiler"
+	"github.com/go-task/task/internal/execext"
+	"github.com/go-task/task/internal/logger"
+	"github.com/go-task/task/internal/taskfile"
+	"github.com/go-task/task/internal/templater"
+)
+
+var _ compiler.Compiler = &CompilerV2{}
+
+type CompilerV2 struct {
+	Dir string
+
+	Taskvars     taskfile.Vars
+	TaskfileVars taskfile.Vars
+
+	Expansions int
+
+	Logger *logger.Logger
+
+	dynamicCache   map[string]string
+	muDynamicCache sync.Mutex
+}
+
+// GetVariables returns fully resolved variables following the priority order:
+// 1. Task variables
+// 2. Call variables
+// 3. Taskfile variables
+// 4. Taskvars file variables
+// 5. Environment variables
+func (c *CompilerV2) GetVariables(t *taskfile.Task, call taskfile.Call) (taskfile.Vars, error) {
+	vr := varResolver{c: c, vars: compiler.GetEnviron()}
+	for _, vars := range []taskfile.Vars{c.Taskvars, c.TaskfileVars, call.Vars, t.Vars} {
+		for i := 0; i < c.Expansions; i++ {
+			vr.merge(vars)
+		}
+	}
+	return vr.vars, vr.err
+}
+
+type varResolver struct {
+	c    *CompilerV2
+	vars taskfile.Vars
+	err  error
+}
+
+func (vr *varResolver) merge(vars taskfile.Vars) {
+	if vr.err != nil {
+		return
+	}
+	tr := templater.Templater{Vars: vr.vars}
+	for k, v := range vars {
+		v = taskfile.Var{
+			Static: tr.Replace(v.Static),
+			Sh:     tr.Replace(v.Sh),
+		}
+		static, err := vr.c.HandleDynamicVar(v)
+		if err != nil {
+			vr.err = err
+			return
+		}
+		vr.vars[k] = taskfile.Var{Static: static}
+	}
+	vr.err = tr.Err()
+}
+
+func (c *CompilerV2) HandleDynamicVar(v taskfile.Var) (string, error) {
+	if v.Static != "" || v.Sh == "" {
+		return v.Static, nil
+	}
+
+	c.muDynamicCache.Lock()
+	defer c.muDynamicCache.Unlock()
+
+	if c.dynamicCache == nil {
+		c.dynamicCache = make(map[string]string, 30)
+	}
+	if result, ok := c.dynamicCache[v.Sh]; ok {
+		return result, nil
+	}
+
+	var stdout bytes.Buffer
+	opts := &execext.RunCommandOptions{
+		Command: v.Sh,
+		Dir:     c.Dir,
+		Stdout:  &stdout,
+		Stderr:  c.Logger.Stderr,
+	}
+	if err := execext.RunCommand(context.Background(), opts); err != nil {
+		return "", fmt.Errorf(`task: Command "%s" in taskvars file failed: %s`, opts.Command, err)
+	}
+
+	// Trim a single trailing newline from the result to make most command
+	// output easier to use in shell commands.
+	result := strings.TrimSuffix(stdout.String(), "\n")
+
+	c.dynamicCache[v.Sh] = result
+	c.Logger.VerboseErrf(`task: dynamic variable: '%s' result: '%s'`, v.Sh, result)
+
+	return result, nil
+}

internal/execext/exec.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"io"
+	"os"
 	"strings"
 
 	"mvdan.cc/sh/interp"
@@ -12,7 +13,6 @@ import (
 
 // RunCommandOptions is the options for the RunCommand func
 type RunCommandOptions struct {
-	Context context.Context
 	Command string
 	Dir     string
 	Env     []string
@@ -27,7 +27,7 @@ var (
 )
 
 // RunCommand runs a shell command
-func RunCommand(opts *RunCommandOptions) error {
+func RunCommand(ctx context.Context, opts *RunCommandOptions) error {
 	if opts == nil {
 		return ErrNilOptions
 	}
@@ -37,20 +37,36 @@ func RunCommand(opts *RunCommandOptions) error {
 		return err
 	}
 
-	r := interp.Runner{
-		Context: opts.Context,
-		Dir:     opts.Dir,
-		Env:     opts.Env,
-
-		Exec: interp.DefaultExec,
-		Open: interp.OpenDevImpls(interp.DefaultOpen),
-
-		Stdin:  opts.Stdin,
-		Stdout: opts.Stdout,
-		Stderr: opts.Stderr,
+	environ := opts.Env
+	if len(environ) == 0 {
+		environ = os.Environ()
 	}
-	if err = r.Reset(); err != nil {
+	env, err := interp.EnvFromList(environ)
+	if err != nil {
 		return err
 	}
-	return r.Run(p)
+
+	r, err := interp.New(
+		interp.Dir(opts.Dir),
+		interp.Env(env),
+
+		interp.Module(interp.DefaultExec),
+		interp.Module(interp.OpenDevImpls(interp.DefaultOpen)),
+
+		interp.StdIO(opts.Stdin, opts.Stdout, opts.Stderr),
+	)
+	if err != nil {
+		return err
+	}
+	return r.Run(ctx, p)
+}
+
+// IsExitError returns true the given error is an exis status error
+func IsExitError(err error) bool {
+	switch err.(type) {
+	case interp.ExitStatus, interp.ShellExitStatus:
+		return true
+	default:
+		return false
+	}
 }

internal/logger/logger.go

@@ -0,0 +1,38 @@
+package logger
+
+import (
+	"fmt"
+	"io"
+)
+
+type Logger struct {
+	Stdout  io.Writer
+	Stderr  io.Writer
+	Verbose bool
+}
+
+func (l *Logger) Outf(s string, args ...interface{}) {
+	if len(args) == 0 {
+		s, args = "%s", []interface{}{s}
+	}
+	fmt.Fprintf(l.Stdout, s+"\n", args...)
+}
+
+func (l *Logger) VerboseOutf(s string, args ...interface{}) {
+	if l.Verbose {
+		l.Outf(s, args...)
+	}
+}
+
+func (l *Logger) Errf(s string, args ...interface{}) {
+	if len(args) == 0 {
+		s, args = "%s", []interface{}{s}
+	}
+	fmt.Fprintf(l.Stderr, s+"\n", args...)
+}
+
+func (l *Logger) VerboseErrf(s string, args ...interface{}) {
+	if l.Verbose {
+		l.Errf(s, args...)
+	}
+}

internal/output/group.go

@@ -0,0 +1,26 @@
+package output
+
+import (
+	"bytes"
+	"io"
+)
+
+type Group struct{}
+
+func (Group) WrapWriter(w io.Writer, _ string) io.WriteCloser {
+	return &groupWriter{writer: w}
+}
+
+type groupWriter struct {
+	writer io.Writer
+	buff   bytes.Buffer
+}
+
+func (gw *groupWriter) Write(p []byte) (int, error) {
+	return gw.buff.Write(p)
+}
+
+func (gw *groupWriter) Close() error {
+	_, err := io.Copy(gw.writer, &gw.buff)
+	return err
+}

internal/output/interleaved.go

@@ -0,0 +1,23 @@
+package output
+
+import (
+	"io"
+)
+
+type Interleaved struct{}
+
+func (Interleaved) WrapWriter(w io.Writer, _ string) io.WriteCloser {
+	return nopWriterCloser{w: w}
+}
+
+type nopWriterCloser struct {
+	w io.Writer
+}
+
+func (wc nopWriterCloser) Write(p []byte) (int, error) {
+	return wc.w.Write(p)
+}
+
+func (wc nopWriterCloser) Close() error {
+	return nil
+}

internal/output/output.go

@@ -0,0 +1,9 @@
+package output
+
+import (
+	"io"
+)
+
+type Output interface {
+	WrapWriter(w io.Writer, prefix string) io.WriteCloser
+}

internal/output/output_test.go

@@ -0,0 +1,62 @@
+package output_test
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/go-task/task/internal/output"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestInterleaved(t *testing.T) {
+	var b bytes.Buffer
+	var o output.Output = output.Interleaved{}
+	var w = o.WrapWriter(&b, "")
+
+	fmt.Fprintln(w, "foo\nbar")
+	assert.Equal(t, "foo\nbar\n", b.String())
+	fmt.Fprintln(w, "baz")
+	assert.Equal(t, "foo\nbar\nbaz\n", b.String())
+}
+
+func TestGroup(t *testing.T) {
+	var b bytes.Buffer
+	var o output.Output = output.Group{}
+	var w = o.WrapWriter(&b, "")
+
+	fmt.Fprintln(w, "foo\nbar")
+	assert.Equal(t, "", b.String())
+	fmt.Fprintln(w, "baz")
+	assert.Equal(t, "", b.String())
+	assert.NoError(t, w.Close())
+	assert.Equal(t, "foo\nbar\nbaz\n", b.String())
+}
+
+func TestPrefixed(t *testing.T) {
+	var b bytes.Buffer
+	var o output.Output = output.Prefixed{}
+	var w = o.WrapWriter(&b, "prefix")
+
+	t.Run("simple use cases", func(t *testing.T) {
+		b.Reset()
+
+		fmt.Fprintln(w, "foo\nbar")
+		assert.Equal(t, "[prefix] foo\n[prefix] bar\n", b.String())
+		fmt.Fprintln(w, "baz")
+		assert.Equal(t, "[prefix] foo\n[prefix] bar\n[prefix] baz\n", b.String())
+	})
+
+	t.Run("multiple writes for a single line", func(t *testing.T) {
+		b.Reset()
+
+		for _, char := range []string{"T", "e", "s", "t", "!"} {
+			fmt.Fprint(w, char)
+			assert.Equal(t, "", b.String())
+		}
+
+		assert.NoError(t, w.Close())
+		assert.Equal(t, "[prefix] Test!\n", b.String())
+	})
+}

internal/output/prefixed.go

@@ -0,0 +1,65 @@
+package output
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+)
+
+type Prefixed struct{}
+
+func (Prefixed) WrapWriter(w io.Writer, prefix string) io.WriteCloser {
+	return &prefixWriter{writer: w, prefix: prefix}
+}
+
+type prefixWriter struct {
+	writer io.Writer
+	prefix string
+	buff   bytes.Buffer
+}
+
+func (pw *prefixWriter) Write(p []byte) (int, error) {
+	n, err := pw.buff.Write(p)
+	if err != nil {
+		return n, err
+	}
+
+	return n, pw.writeOutputLines(false)
+}
+
+func (pw *prefixWriter) Close() error {
+	return pw.writeOutputLines(true)
+}
+
+func (pw *prefixWriter) writeOutputLines(force bool) error {
+	for {
+		line, err := pw.buff.ReadString('\n')
+		if err == nil {
+			if err = pw.writeLine(line); err != nil {
+				return err
+			}
+		} else if err == io.EOF {
+			// if this line was not a complete line, re-add to the buffer
+			if !force && !strings.HasSuffix(line, "\n") {
+				_, err = pw.buff.WriteString(line)
+				return err
+			}
+
+			return pw.writeLine(line)
+		} else {
+			return err
+		}
+	}
+}
+
+func (pw *prefixWriter) writeLine(line string) error {
+	if line == "" {
+		return nil
+	}
+	if !strings.HasSuffix(line, "\n") {
+		line += "\n"
+	}
+	_, err := fmt.Fprintf(pw.writer, "[%s] %s", pw.prefix, line)
+	return err
+}

internal/status/glob.go

@@ -5,7 +5,7 @@ import (
 	"sort"
 
 	"github.com/mattn/go-zglob"
-	"github.com/mitchellh/go-homedir"
+	"mvdan.cc/sh/shell"
 )
 
 func glob(dir string, globs []string) (files []string, err error) {
@@ -13,13 +13,13 @@ func glob(dir string, globs []string) (files []string, err error) {
 		if !filepath.IsAbs(g) {
 			g = filepath.Join(dir, g)
 		}
-		g, err = homedir.Expand(g)
+		g, err = shell.Expand(g, nil)
 		if err != nil {
 			return nil, err
 		}
 		f, err := zglob.Glob(g)
 		if err != nil {
-			return nil, err
+			continue
 		}
 		files = append(files, f...)
 	}

internal/taskfile/call.go

@@ -0,0 +1,7 @@
+package taskfile
+
+// Call is the parameters to a task call
+type Call struct {
+	Task string
+	Vars Vars
+}

internal/taskfile/cmd.go

@@ -1,4 +1,4 @@
-package task
+package taskfile
 
 import (
 	"errors"
@@ -7,10 +7,11 @@ import (
 
 // Cmd is a task command
 type Cmd struct {
-	Cmd    string
-	Silent bool
-	Task   string
-	Vars   Vars
+	Cmd         string
+	Silent      bool
+	Task        string
+	Vars        Vars
+	IgnoreError bool
 }
 
 // Dep is a task dependency
@@ -38,12 +39,14 @@ func (c *Cmd) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		return nil
 	}
 	var cmdStruct struct {
-		Cmd    string
-		Silent bool
+		Cmd         string
+		Silent      bool
+		IgnoreError bool `yaml:"ignore_error"`
 	}
 	if err := unmarshal(&cmdStruct); err == nil && cmdStruct.Cmd != "" {
 		c.Cmd = cmdStruct.Cmd
 		c.Silent = cmdStruct.Silent
+		c.IgnoreError = cmdStruct.IgnoreError
 		return nil
 	}
 	var taskCall struct {
@@ -76,9 +79,3 @@ func (d *Dep) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	}
 	return ErrCantUnmarshalDep
 }
-
-// Call is the parameters to a task call
-type Call struct {
-	Task string
-	Vars Vars
-}

internal/taskfile/merge.go

@@ -0,0 +1,38 @@
+package taskfile
+
+import (
+	"fmt"
+	"strings"
+)
+
+// NamespaceSeparator contains the character that separates namescapes
+const NamespaceSeparator = ":"
+
+// Merge merges the second Taskfile into the first
+func Merge(t1, t2 *Taskfile, namespaces ...string) error {
+	if t1.Version != t2.Version {
+		return fmt.Errorf(`Taskfiles versions should match. First is "%s" but second is "%s"`, t1.Version, t2.Version)
+	}
+
+	if t2.Expansions != 0 && t2.Expansions != 2 {
+		t1.Expansions = t2.Expansions
+	}
+	if t2.Output != "" {
+		t1.Output = t2.Output
+	}
+	for k, v := range t2.Includes {
+		t1.Includes[k] = v
+	}
+	for k, v := range t2.Vars {
+		t1.Vars[k] = v
+	}
+	for k, v := range t2.Tasks {
+		t1.Tasks[taskNameWithNamespace(k, namespaces...)] = v
+	}
+
+	return nil
+}
+
+func taskNameWithNamespace(taskName string, namespaces ...string) string {
+	return strings.Join(append(namespaces, taskName), NamespaceSeparator)
+}

internal/taskfile/read/taskfile.go

@@ -0,0 +1,75 @@
+package read
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"github.com/go-task/task/internal/taskfile"
+
+	"gopkg.in/yaml.v2"
+)
+
+// ErrIncludedTaskfilesCantHaveIncludes is returned when a included Taskfile contains includes
+var ErrIncludedTaskfilesCantHaveIncludes = errors.New("task: Included Taskfiles can't have includes. Please, move the include to the main Taskfile")
+
+// Taskfile reads a Taskfile for a given directory
+func Taskfile(dir string) (*taskfile.Taskfile, error) {
+	path := filepath.Join(dir, "Taskfile.yml")
+	if _, err := os.Stat(path); err != nil {
+		return nil, fmt.Errorf(`No Taskfile.yml found. Use "task --init" to create a new one`)
+	}
+	t, err := readTaskfile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	for namespace, path := range t.Includes {
+		path = filepath.Join(dir, path)
+		info, err := os.Stat(path)
+		if err != nil {
+			return nil, err
+		}
+		if info.IsDir() {
+			path = filepath.Join(path, "Taskfile.yml")
+		}
+		includedTaskfile, err := readTaskfile(path)
+		if err != nil {
+			return nil, err
+		}
+		if len(includedTaskfile.Includes) > 0 {
+			return nil, ErrIncludedTaskfilesCantHaveIncludes
+		}
+		if err = taskfile.Merge(t, includedTaskfile, namespace); err != nil {
+			return nil, err
+		}
+	}
+
+	path = filepath.Join(dir, fmt.Sprintf("Taskfile_%s.yml", runtime.GOOS))
+	if _, err = os.Stat(path); err == nil {
+		osTaskfile, err := readTaskfile(path)
+		if err != nil {
+			return nil, err
+		}
+		if err = taskfile.Merge(t, osTaskfile); err != nil {
+			return nil, err
+		}
+	}
+
+	for name, task := range t.Tasks {
+		task.Task = name
+	}
+
+	return t, nil
+}
+
+func readTaskfile(file string) (*taskfile.Taskfile, error) {
+	f, err := os.Open(file)
+	if err != nil {
+		return nil, err
+	}
+	var t taskfile.Taskfile
+	return &t, yaml.NewDecoder(f).Decode(&t)
+}

internal/taskfile/read/taskvars.go

@@ -0,0 +1,52 @@
+package read
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"github.com/go-task/task/internal/taskfile"
+
+	"gopkg.in/yaml.v2"
+)
+
+// Taskvars reads a Taskvars for a given directory
+func Taskvars(dir string) (taskfile.Vars, error) {
+	vars := make(taskfile.Vars)
+
+	path := filepath.Join(dir, "Taskvars.yml")
+	if _, err := os.Stat(path); err == nil {
+		vars, err = readTaskvars(path)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	path = filepath.Join(dir, fmt.Sprintf("Taskvars_%s.yml", runtime.GOOS))
+	if _, err := os.Stat(path); err == nil {
+		osVars, err := readTaskvars(path)
+		if err != nil {
+			return nil, err
+		}
+
+		if vars == nil {
+			vars = osVars
+		} else {
+			for k, v := range osVars {
+				vars[k] = v
+			}
+		}
+	}
+
+	return vars, nil
+}
+
+func readTaskvars(file string) (taskfile.Vars, error) {
+	f, err := os.Open(file)
+	if err != nil {
+		return nil, err
+	}
+	var vars taskfile.Vars
+	return vars, yaml.NewDecoder(f).Decode(&vars)
+}

internal/taskfile/task.go

@@ -0,0 +1,22 @@
+package taskfile
+
+// Tasks representas a group of tasks
+type Tasks map[string]*Task
+
+// Task represents a task
+type Task struct {
+	Task        string
+	Cmds        []*Cmd
+	Deps        []*Dep
+	Desc        string
+	Sources     []string
+	Generates   []string
+	Status      []string
+	Dir         string
+	Vars        Vars
+	Env         Vars
+	Silent      bool
+	Method      string
+	Prefix      string
+	IgnoreError bool `yaml:"ignore_error"`
+}

internal/taskfile/taskfile.go

@@ -0,0 +1,41 @@
+package taskfile
+
+// Taskfile represents a Taskfile.yml
+type Taskfile struct {
+	Version    string
+	Expansions int
+	Output     string
+	Includes   map[string]string
+	Vars       Vars
+	Tasks      Tasks
+}
+
+// UnmarshalYAML implements yaml.Unmarshaler interface
+func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	if err := unmarshal(&tf.Tasks); err == nil {
+		tf.Version = "1"
+		return nil
+	}
+
+	var taskfile struct {
+		Version    string
+		Expansions int
+		Output     string
+		Includes   map[string]string
+		Vars       Vars
+		Tasks      Tasks
+	}
+	if err := unmarshal(&taskfile); err != nil {
+		return err
+	}
+	tf.Version = taskfile.Version
+	tf.Expansions = taskfile.Expansions
+	tf.Output = taskfile.Output
+	tf.Includes = taskfile.Includes
+	tf.Vars = taskfile.Vars
+	tf.Tasks = taskfile.Tasks
+	if tf.Expansions <= 0 {
+		tf.Expansions = 2
+	}
+	return nil
+}

internal/taskfile/taskfile_test.go

@@ -1,9 +1,9 @@
-package task_test
+package taskfile_test
 
 import (
 	"testing"
 
-	"github.com/go-task/task"
+	"github.com/go-task/task/internal/taskfile"
 
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v2"
@@ -27,28 +27,28 @@ vars:
 	}{
 		{
 			yamlCmd,
-			&task.Cmd{},
-			&task.Cmd{Cmd: `echo "a string command"`},
+			&taskfile.Cmd{},
+			&taskfile.Cmd{Cmd: `echo "a string command"`},
 		},
 		{
 			yamlTaskCall,
-			&task.Cmd{},
-			&task.Cmd{Task: "another-task", Vars: task.Vars{
-				"PARAM1": task.Var{Static: "VALUE1"},
-				"PARAM2": task.Var{Static: "VALUE2"},
+			&taskfile.Cmd{},
+			&taskfile.Cmd{Task: "another-task", Vars: taskfile.Vars{
+				"PARAM1": taskfile.Var{Static: "VALUE1"},
+				"PARAM2": taskfile.Var{Static: "VALUE2"},
 			}},
 		},
 		{
 			yamlDep,
-			&task.Dep{},
-			&task.Dep{Task: "task-name"},
+			&taskfile.Dep{},
+			&taskfile.Dep{Task: "task-name"},
 		},
 		{
 			yamlTaskCall,
-			&task.Dep{},
-			&task.Dep{Task: "another-task", Vars: task.Vars{
-				"PARAM1": task.Var{Static: "VALUE1"},
-				"PARAM2": task.Var{Static: "VALUE2"},
+			&taskfile.Dep{},
+			&taskfile.Dep{Task: "another-task", Vars: taskfile.Vars{
+				"PARAM1": taskfile.Var{Static: "VALUE1"},
+				"PARAM2": taskfile.Var{Static: "VALUE2"},
 			}},
 		},
 	}

internal/taskfile/var.go

@@ -0,0 +1,58 @@
+package taskfile
+
+import (
+	"errors"
+	"strings"
+)
+
+var (
+	// ErrCantUnmarshalVar is returned for invalid var YAML.
+	ErrCantUnmarshalVar = errors.New("task: can't unmarshal var value")
+)
+
+// Vars is a string[string] variables map.
+type Vars map[string]Var
+
+// ToStringMap converts Vars to a string map containing only the static
+// variables
+func (vs Vars) ToStringMap() (m map[string]string) {
+	m = make(map[string]string, len(vs))
+	for k, v := range vs {
+		if v.Sh != "" {
+			// Dynamic variable is not yet resolved; trigger
+			// <no value> to be used in templates.
+			continue
+		}
+		m[k] = v.Static
+	}
+	return
+}
+
+// Var represents either a static or dynamic variable.
+type Var struct {
+	Static string
+	Sh     string
+}
+
+// UnmarshalYAML implements yaml.Unmarshaler interface.
+func (v *Var) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var str string
+	if err := unmarshal(&str); err == nil {
+		if strings.HasPrefix(str, "$") {
+			v.Sh = strings.TrimPrefix(str, "$")
+		} else {
+			v.Static = str
+		}
+		return nil
+	}
+
+	var sh struct {
+		Sh string
+	}
+	if err := unmarshal(&sh); err == nil {
+		v.Sh = sh.Sh
+		return nil
+	}
+
+	return ErrCantUnmarshalVar
+}

internal/taskfile/version/version.go

@@ -0,0 +1,46 @@
+package version
+
+import (
+	"github.com/Masterminds/semver"
+)
+
+var (
+	v1  = mustVersion("1")
+	v2  = mustVersion("2")
+	v21 = mustVersion("2.1")
+	v22 = mustVersion("2.2")
+	v23 = mustVersion("2.3")
+)
+
+// IsV1 returns if is a given Taskfile version is version 1
+func IsV1(v *semver.Constraints) bool {
+	return v.Check(v1)
+}
+
+// IsV2 returns if is a given Taskfile version is at least version 2
+func IsV2(v *semver.Constraints) bool {
+	return v.Check(v2)
+}
+
+// IsV21 returns if is a given Taskfile version is at least version 2.1
+func IsV21(v *semver.Constraints) bool {
+	return v.Check(v21)
+}
+
+// IsV22 returns if is a given Taskfile version is at least version 2.2
+func IsV22(v *semver.Constraints) bool {
+	return v.Check(v22)
+}
+
+// IsV23 returns if is a given Taskfile version is at least version 2.3
+func IsV23(v *semver.Constraints) bool {
+	return v.Check(v23)
+}
+
+func mustVersion(s string) *semver.Version {
+	v, err := semver.NewVersion(s)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}

internal/templater/funcs.go

@@ -0,0 +1,52 @@
+package templater
+
+import (
+	"path/filepath"
+	"runtime"
+	"strings"
+	"text/template"
+
+	"github.com/Masterminds/sprig"
+)
+
+var (
+	templateFuncs template.FuncMap
+)
+
+func init() {
+	taskFuncs := template.FuncMap{
+		"OS":   func() string { return runtime.GOOS },
+		"ARCH": func() string { return runtime.GOARCH },
+		"catLines": func(s string) string {
+			s = strings.Replace(s, "\r\n", " ", -1)
+			return strings.Replace(s, "\n", " ", -1)
+		},
+		"splitLines": func(s string) []string {
+			s = strings.Replace(s, "\r\n", "\n", -1)
+			return strings.Split(s, "\n")
+		},
+		"fromSlash": func(path string) string {
+			return filepath.FromSlash(path)
+		},
+		"toSlash": func(path string) string {
+			return filepath.ToSlash(path)
+		},
+		"exeExt": func() string {
+			if runtime.GOOS == "windows" {
+				return ".exe"
+			}
+			return ""
+		},
+		// IsSH is deprecated.
+		"IsSH": func() bool { return true },
+	}
+	// Deprecated aliases for renamed functions.
+	taskFuncs["FromSlash"] = taskFuncs["fromSlash"]
+	taskFuncs["ToSlash"] = taskFuncs["toSlash"]
+	taskFuncs["ExeExt"] = taskFuncs["exeExt"]
+
+	templateFuncs = sprig.TxtFuncMap()
+	for k, v := range taskFuncs {
+		templateFuncs[k] = v
+	}
+}

internal/templater/templater.go

@@ -0,0 +1,73 @@
+package templater
+
+import (
+	"bytes"
+	"text/template"
+
+	"github.com/go-task/task/internal/taskfile"
+)
+
+// Templater is a help struct that allow us to call "replaceX" funcs multiple
+// times, without having to check for error each time. The first error that
+// happen will be assigned to r.err, and consecutive calls to funcs will just
+// return the zero value.
+type Templater struct {
+	Vars taskfile.Vars
+
+	strMap map[string]string
+	err    error
+}
+
+func (r *Templater) Replace(str string) string {
+	if r.err != nil || str == "" {
+		return ""
+	}
+
+	templ, err := template.New("").Funcs(templateFuncs).Parse(str)
+	if err != nil {
+		r.err = err
+		return ""
+	}
+
+	if r.strMap == nil {
+		r.strMap = r.Vars.ToStringMap()
+	}
+
+	var b bytes.Buffer
+	if err = templ.Execute(&b, r.strMap); err != nil {
+		r.err = err
+		return ""
+	}
+	return b.String()
+}
+
+func (r *Templater) ReplaceSlice(strs []string) []string {
+	if r.err != nil || len(strs) == 0 {
+		return nil
+	}
+
+	new := make([]string, len(strs))
+	for i, str := range strs {
+		new[i] = r.Replace(str)
+	}
+	return new
+}
+
+func (r *Templater) ReplaceVars(vars taskfile.Vars) taskfile.Vars {
+	if r.err != nil || len(vars) == 0 {
+		return nil
+	}
+
+	new := make(taskfile.Vars, len(vars))
+	for k, v := range vars {
+		new[k] = taskfile.Var{
+			Static: r.Replace(v.Static),
+			Sh:     r.Replace(v.Sh),
+		}
+	}
+	return new
+}
+
+func (r *Templater) Err() error {
+	return r.err
+}

log.go

@@ -1,31 +0,0 @@
-package task
-
-import (
-	"fmt"
-)
-
-func (e *Executor) outf(s string, args ...interface{}) {
-	if len(args) == 0 {
-		s, args = "%s", []interface{}{s}
-	}
-	fmt.Fprintf(e.Stdout, s+"\n", args...)
-}
-
-func (e *Executor) verboseOutf(s string, args ...interface{}) {
-	if e.Verbose {
-		e.outf(s, args...)
-	}
-}
-
-func (e *Executor) errf(s string, args ...interface{}) {
-	if len(args) == 0 {
-		s, args = "%s", []interface{}{s}
-	}
-	fmt.Fprintf(e.Stderr, s+"\n", args...)
-}
-
-func (e *Executor) verboseErrf(s string, args ...interface{}) {
-	if e.Verbose {
-		e.errf(s, args...)
-	}
-}

status.go

@@ -6,14 +6,33 @@ import (
 
 	"github.com/go-task/task/internal/execext"
 	"github.com/go-task/task/internal/status"
+	"github.com/go-task/task/internal/taskfile"
 )
 
-func (t *Task) isUpToDate(ctx context.Context) (bool, error) {
+// Status returns an error if any the of given tasks is not up-to-date
+func (e *Executor) Status(calls ...taskfile.Call) error {
+	for _, call := range calls {
+		t, err := e.CompiledTask(call)
+		if err != nil {
+			return err
+		}
+		isUpToDate, err := isTaskUpToDate(e.Context, t)
+		if err != nil {
+			return err
+		}
+		if !isUpToDate {
+			return fmt.Errorf(`task: Task "%s" is not up-to-date`, t.Task)
+		}
+	}
+	return nil
+}
+
+func isTaskUpToDate(ctx context.Context, t *taskfile.Task) (bool, error) {
 	if len(t.Status) > 0 {
-		return t.isUpToDateStatus(ctx)
+		return isTaskUpToDateStatus(ctx, t)
 	}
 
-	checker, err := t.getStatusChecker()
+	checker, err := getStatusChecker(t)
 	if err != nil {
 		return false, err
 	}
@@ -21,15 +40,15 @@ func (t *Task) isUpToDate(ctx context.Context) (bool, error) {
 	return checker.IsUpToDate()
 }
 
-func (t *Task) statusOnError() error {
-	checker, err := t.getStatusChecker()
+func statusOnError(t *taskfile.Task) error {
+	checker, err := getStatusChecker(t)
 	if err != nil {
 		return err
 	}
 	return checker.OnError()
 }
 
-func (t *Task) getStatusChecker() (status.Checker, error) {
+func getStatusChecker(t *taskfile.Task) (status.Checker, error) {
 	switch t.Method {
 	case "", "timestamp":
 		return &status.Timestamp{
@@ -50,13 +69,12 @@ func (t *Task) getStatusChecker() (status.Checker, error) {
 	}
 }
 
-func (t *Task) isUpToDateStatus(ctx context.Context) (bool, error) {
+func isTaskUpToDateStatus(ctx context.Context, t *taskfile.Task) (bool, error) {
 	for _, s := range t.Status {
-		err := execext.RunCommand(&execext.RunCommandOptions{
-			Context: ctx,
+		err := execext.RunCommand(ctx, &execext.RunCommandOptions{
 			Command: s,
 			Dir:     t.Dir,
-			Env:     t.getEnviron(),
+			Env:     getEnviron(t),
 		})
 		if err != nil {
 			return false, nil

task.go

@@ -5,17 +5,23 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"sync"
 	"sync/atomic"
 
+	"github.com/go-task/task/internal/compiler"
+	compilerv1 "github.com/go-task/task/internal/compiler/v1"
+	compilerv2 "github.com/go-task/task/internal/compiler/v2"
 	"github.com/go-task/task/internal/execext"
+	"github.com/go-task/task/internal/logger"
+	"github.com/go-task/task/internal/output"
+	"github.com/go-task/task/internal/taskfile"
+	"github.com/go-task/task/internal/taskfile/read"
+	"github.com/go-task/task/internal/taskfile/version"
 
+	"github.com/Masterminds/semver"
 	"golang.org/x/sync/errgroup"
 )
 
 const (
-	// TaskFilePath is the default Taskfile
-	TaskFilePath = "Taskfile"
 	// MaximumTaskCall is the max number of times a task can be called.
 	// This exists to prevent infinite loops on cyclic dependencies
 	MaximumTaskCall = 100
@@ -23,12 +29,13 @@ const (
 
 // Executor executes a Taskfile
 type Executor struct {
-	Tasks   Tasks
-	Dir     string
-	Force   bool
-	Watch   bool
-	Verbose bool
-	Silent  bool
+	Taskfile *taskfile.Taskfile
+	Dir      string
+	Force    bool
+	Watch    bool
+	Verbose  bool
+	Silent   bool
+	Dry      bool
 
 	Context context.Context
 
@@ -36,60 +43,20 @@ type Executor struct {
 	Stdout io.Writer
 	Stderr io.Writer
 
-	taskvars Vars
+	Logger   *logger.Logger
+	Compiler compiler.Compiler
+	Output   output.Output
+
+	taskvars taskfile.Vars
 
 	taskCallCount map[string]*int32
-
-	dynamicCache   map[string]string
-	muDynamicCache sync.Mutex
-}
-
-// Tasks representas a group of tasks
-type Tasks map[string]*Task
-
-// Task represents a task
-type Task struct {
-	Task      string
-	Cmds      []*Cmd
-	Deps      []*Dep
-	Desc      string
-	Sources   []string
-	Generates []string
-	Status    []string
-	Dir       string
-	Vars      Vars
-	Env       Vars
-	Silent    bool
-	Method    string
 }
 
 // Run runs Task
-func (e *Executor) Run(calls ...Call) error {
-	if e.Context == nil {
-		e.Context = context.Background()
-	}
-	if e.Stdin == nil {
-		e.Stdin = os.Stdin
-	}
-	if e.Stdout == nil {
-		e.Stdout = os.Stdout
-	}
-	if e.Stderr == nil {
-		e.Stderr = os.Stderr
-	}
-
-	e.taskCallCount = make(map[string]*int32, len(e.Tasks))
-	for k := range e.Tasks {
-		e.taskCallCount[k] = new(int32)
-	}
-
-	if e.dynamicCache == nil {
-		e.dynamicCache = make(map[string]string, 10)
-	}
-
+func (e *Executor) Run(calls ...taskfile.Call) error {
 	// check if given tasks exist
 	for _, c := range calls {
-		if _, ok := e.Tasks[c.Task]; !ok {
+		if _, ok := e.Taskfile.Tasks[c.Task]; !ok {
 			// FIXME: move to the main package
 			e.PrintTasksHelp()
 			return &taskNotFoundError{taskName: c.Task}
@@ -108,8 +75,100 @@ func (e *Executor) Run(calls ...Call) error {
 	return nil
 }
 
+// Setup setups Executor's internal state
+func (e *Executor) Setup() error {
+	var err error
+	e.Taskfile, err = read.Taskfile(e.Dir)
+	if err != nil {
+		return err
+	}
+	e.taskvars, err = read.Taskvars(e.Dir)
+	if err != nil {
+		return err
+	}
+
+	v, err := semver.NewConstraint(e.Taskfile.Version)
+	if err != nil {
+		return fmt.Errorf(`task: could not parse taskfile version "%s": %v`, e.Taskfile.Version, err)
+	}
+
+	if e.Context == nil {
+		e.Context = context.Background()
+	}
+	if e.Stdin == nil {
+		e.Stdin = os.Stdin
+	}
+	if e.Stdout == nil {
+		e.Stdout = os.Stdout
+	}
+	if e.Stderr == nil {
+		e.Stderr = os.Stderr
+	}
+	e.Logger = &logger.Logger{
+		Stdout:  e.Stdout,
+		Stderr:  e.Stderr,
+		Verbose: e.Verbose,
+	}
+	switch {
+	case version.IsV1(v):
+		e.Compiler = &compilerv1.CompilerV1{
+			Dir:    e.Dir,
+			Vars:   e.taskvars,
+			Logger: e.Logger,
+		}
+	case version.IsV2(v), version.IsV21(v), version.IsV22(v):
+		e.Compiler = &compilerv2.CompilerV2{
+			Dir:          e.Dir,
+			Taskvars:     e.taskvars,
+			TaskfileVars: e.Taskfile.Vars,
+			Expansions:   e.Taskfile.Expansions,
+			Logger:       e.Logger,
+		}
+	case version.IsV23(v):
+		return fmt.Errorf(`task: Taskfile versions greater than v2.3 not implemented in the version of Task`)
+	}
+
+	if !version.IsV21(v) && e.Taskfile.Output != "" {
+		return fmt.Errorf(`task: Taskfile option "output" is only available starting on Taskfile version v2.1`)
+	}
+	if !version.IsV22(v) && len(e.Taskfile.Includes) > 0 {
+		return fmt.Errorf(`task: Including Taskfiles is only available starting on Taskfile version v2.2`)
+	}
+	switch e.Taskfile.Output {
+	case "", "interleaved":
+		e.Output = output.Interleaved{}
+	case "group":
+		e.Output = output.Group{}
+	case "prefixed":
+		e.Output = output.Prefixed{}
+	default:
+		return fmt.Errorf(`task: output option "%s" not recognized`, e.Taskfile.Output)
+	}
+
+	if !version.IsV21(v) {
+		err := fmt.Errorf(`task: Taskfile option "ignore_error" is only available starting on Taskfile version v2.1`)
+
+		for _, task := range e.Taskfile.Tasks {
+			if task.IgnoreError {
+				return err
+			}
+			for _, cmd := range task.Cmds {
+				if cmd.IgnoreError {
+					return err
+				}
+			}
+		}
+	}
+
+	e.taskCallCount = make(map[string]*int32, len(e.Taskfile.Tasks))
+	for k := range e.Taskfile.Tasks {
+		e.taskCallCount[k] = new(int32)
+	}
+	return nil
+}
+
 // RunTask runs a task by its name
-func (e *Executor) RunTask(ctx context.Context, call Call) error {
+func (e *Executor) RunTask(ctx context.Context, call taskfile.Call) error {
 	t, err := e.CompiledTask(call)
 	if err != nil {
 		return err
@@ -123,13 +182,13 @@ func (e *Executor) RunTask(ctx context.Context, call Call) error {
 	}
 
 	if !e.Force {
-		upToDate, err := t.isUpToDate(ctx)
+		upToDate, err := isTaskUpToDate(ctx, t)
 		if err != nil {
 			return err
 		}
 		if upToDate {
 			if !e.Silent {
-				e.errf(`task: Task "%s" is up to date`, t.Task)
+				e.Logger.Errf(`task: Task "%s" is up to date`, t.Task)
 			}
 			return nil
 		}
@@ -137,58 +196,80 @@ func (e *Executor) RunTask(ctx context.Context, call Call) error {
 
 	for i := range t.Cmds {
 		if err := e.runCommand(ctx, t, call, i); err != nil {
-			if err2 := t.statusOnError(); err2 != nil {
-				e.verboseErrf("task: error cleaning status on error: %v", err2)
+			if err2 := statusOnError(t); err2 != nil {
+				e.Logger.VerboseErrf("task: error cleaning status on error: %v", err2)
 			}
+
+			if execext.IsExitError(err) && t.IgnoreError {
+				e.Logger.VerboseErrf("task: task error ignored: %v", err)
+				continue
+			}
+
 			return &taskRunError{t.Task, err}
 		}
 	}
 	return nil
 }
 
-func (e *Executor) runDeps(ctx context.Context, t *Task) error {
+func (e *Executor) runDeps(ctx context.Context, t *taskfile.Task) error {
 	g, ctx := errgroup.WithContext(ctx)
 
 	for _, d := range t.Deps {
 		d := d
 
 		g.Go(func() error {
-			return e.RunTask(ctx, Call{Task: d.Task, Vars: d.Vars})
+			return e.RunTask(ctx, taskfile.Call{Task: d.Task, Vars: d.Vars})
 		})
 	}
 
 	return g.Wait()
 }
 
-func (e *Executor) runCommand(ctx context.Context, t *Task, call Call, i int) error {
+func (e *Executor) runCommand(ctx context.Context, t *taskfile.Task, call taskfile.Call, i int) error {
 	cmd := t.Cmds[i]
 
-	if cmd.Cmd == "" {
-		return e.RunTask(ctx, Call{Task: cmd.Task, Vars: cmd.Vars})
-	}
+	switch {
+	case cmd.Task != "":
+		return e.RunTask(ctx, taskfile.Call{Task: cmd.Task, Vars: cmd.Vars})
+	case cmd.Cmd != "":
+		if e.Verbose || (!cmd.Silent && !t.Silent && !e.Silent) {
+			e.Logger.Errf(cmd.Cmd)
+		}
 
-	if e.Verbose || (!cmd.Silent && !t.Silent && !e.Silent) {
-		e.errf(cmd.Cmd)
-	}
+		if e.Dry {
+			return nil
+		}
 
-	return execext.RunCommand(&execext.RunCommandOptions{
-		Context: ctx,
-		Command: cmd.Cmd,
-		Dir:     t.Dir,
-		Env:     t.getEnviron(),
-		Stdin:   e.Stdin,
-		Stdout:  e.Stdout,
-		Stderr:  e.Stderr,
-	})
+		stdOut := e.Output.WrapWriter(e.Stdout, t.Prefix)
+		stdErr := e.Output.WrapWriter(e.Stderr, t.Prefix)
+		defer stdOut.Close()
+		defer stdErr.Close()
+
+		err := execext.RunCommand(ctx, &execext.RunCommandOptions{
+			Command: cmd.Cmd,
+			Dir:     t.Dir,
+			Env:     getEnviron(t),
+			Stdin:   e.Stdin,
+			Stdout:  stdOut,
+			Stderr:  stdErr,
+		})
+		if execext.IsExitError(err) && cmd.IgnoreError {
+			e.Logger.VerboseErrf("task: command error ignored: %v", err)
+			return nil
+		}
+		return err
+	default:
+		return nil
+	}
 }
 
-func (t *Task) getEnviron() []string {
+func getEnviron(t *taskfile.Task) []string {
 	if t.Env == nil {
 		return nil
 	}
 
 	envs := os.Environ()
-	for k, v := range t.Env.toStringMap() {
+	for k, v := range t.Env.ToStringMap() {
 		envs = append(envs, fmt.Sprintf("%s=%s", k, v))
 	}
 	return envs

task_test.go

@@ -10,7 +10,9 @@ import (
 	"testing"
 
 	"github.com/go-task/task"
+	"github.com/go-task/task/internal/taskfile"
 
+	"github.com/mitchellh/go-homedir"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -37,8 +39,8 @@ func (fct fileContentTest) Run(t *testing.T) {
 		Stdout: ioutil.Discard,
 		Stderr: ioutil.Discard,
 	}
-	assert.NoError(t, e.ReadTaskfile(), "e.ReadTaskfile()")
-	assert.NoError(t, e.Run(task.Call{Task: fct.Target}), "e.Run(target)")
+	assert.NoError(t, e.Setup(), "e.Setup()")
+	assert.NoError(t, e.Run(taskfile.Call{Task: fct.Target}), "e.Run(target)")
 
 	for name, expectContent := range fct.Files {
 		t.Run(fct.name(name), func(t *testing.T) {
@@ -51,7 +53,6 @@ func (fct fileContentTest) Run(t *testing.T) {
 			assert.Equal(t, expectContent, s, "unexpected file content")
 		})
 	}
-
 }
 
 func TestEnv(t *testing.T) {
@@ -66,9 +67,9 @@ func TestEnv(t *testing.T) {
 	tt.Run(t)
 }
 
-func TestVars(t *testing.T) {
+func TestVarsV1(t *testing.T) {
 	tt := fileContentTest{
-		Dir:       "testdata/vars",
+		Dir:       "testdata/vars/v1",
 		Target:    "default",
 		TrimSpace: true,
 		Files: map[string]string{
@@ -102,30 +103,70 @@ func TestVars(t *testing.T) {
 	tt.Target = "hello"
 	tt.Run(t)
 }
-func TestMultilineVars(t *testing.T) {
+
+func TestVarsV2(t *testing.T) {
 	tt := fileContentTest{
-		Dir:       "testdata/vars/multiline",
+		Dir:       "testdata/vars/v2",
 		Target:    "default",
-		TrimSpace: false,
+		TrimSpace: true,
 		Files: map[string]string{
-			// Note:
-			// - task does not strip a trailing newline from var entries
-			// - task strips one trailing newline from shell output
-			// - the cat command adds a trailing newline
-			"echo_foobar.txt":      "foo\nbar\n",
-			"echo_n_foobar.txt":    "foo\nbar\n",
-			"echo_n_multiline.txt": "\n\nfoo\n  bar\nfoobar\n\nbaz\n\n",
-			"var_multiline.txt":    "\n\nfoo\n  bar\nfoobar\n\nbaz\n\n\n",
-			"var_catlines.txt":     "  foo   bar foobar  baz  \n",
-			"var_enumfile.txt":     "0:\n1:\n2:foo\n3:  bar\n4:foobar\n5:\n6:baz\n7:\n8:\n",
+			"foo.txt":              "foo",
+			"bar.txt":              "bar",
+			"baz.txt":              "baz",
+			"tmpl_foo.txt":         "foo",
+			"tmpl_bar.txt":         "bar",
+			"tmpl_foo2.txt":        "foo2",
+			"tmpl_bar2.txt":        "bar2",
+			"shtmpl_foo.txt":       "foo",
+			"shtmpl_foo2.txt":      "foo2",
+			"nestedtmpl_foo.txt":   "<no value>",
+			"nestedtmpl_foo2.txt":  "foo2",
+			"foo2.txt":             "foo2",
+			"bar2.txt":             "bar2",
+			"baz2.txt":             "baz2",
+			"tmpl2_foo.txt":        "<no value>",
+			"tmpl2_foo2.txt":       "foo2",
+			"tmpl2_bar.txt":        "<no value>",
+			"tmpl2_bar2.txt":       "bar2",
+			"shtmpl2_foo.txt":      "<no value>",
+			"shtmpl2_foo2.txt":     "foo2",
+			"nestedtmpl2_foo2.txt": "<no value>",
+			"override.txt":         "bar",
+			"nested.txt":           "Taskvars-TaskfileVars-TaskVars",
 		},
 	}
 	tt.Run(t)
+	// Ensure identical results when running hello task directly.
+	tt.Target = "hello"
+	tt.Run(t)
+}
+
+func TestMultilineVars(t *testing.T) {
+	for _, dir := range []string{"testdata/vars/v1/multiline", "testdata/vars/v2/multiline"} {
+		tt := fileContentTest{
+			Dir:       dir,
+			Target:    "default",
+			TrimSpace: false,
+			Files: map[string]string{
+				// Note:
+				// - task does not strip a trailing newline from var entries
+				// - task strips one trailing newline from shell output
+				// - the cat command adds a trailing newline
+				"echo_foobar.txt":      "foo\nbar\n",
+				"echo_n_foobar.txt":    "foo\nbar\n",
+				"echo_n_multiline.txt": "\n\nfoo\n  bar\nfoobar\n\nbaz\n\n",
+				"var_multiline.txt":    "\n\nfoo\n  bar\nfoobar\n\nbaz\n\n\n",
+				"var_catlines.txt":     "  foo   bar foobar  baz  \n",
+				"var_enumfile.txt":     "0:\n1:\n2:foo\n3:  bar\n4:foobar\n5:\n6:baz\n7:\n8:\n",
+			},
+		}
+		tt.Run(t)
+	}
 }
 
 func TestVarsInvalidTmpl(t *testing.T) {
 	const (
-		dir         = "testdata/vars"
+		dir         = "testdata/vars/v1"
 		target      = "invalid-var-tmpl"
 		expectError = "template: :1: unexpected EOF"
 	)
@@ -135,8 +176,8 @@ func TestVarsInvalidTmpl(t *testing.T) {
 		Stdout: ioutil.Discard,
 		Stderr: ioutil.Discard,
 	}
-	assert.NoError(t, e.ReadTaskfile(), "e.ReadTaskfile()")
-	assert.EqualError(t, e.Run(task.Call{Task: target}), expectError, "e.Run(target)")
+	assert.NoError(t, e.Setup(), "e.Setup()")
+	assert.EqualError(t, e.Run(taskfile.Call{Task: target}), expectError, "e.Run(target)")
 }
 
 func TestParams(t *testing.T) {
@@ -187,8 +228,8 @@ func TestDeps(t *testing.T) {
 		Stdout: ioutil.Discard,
 		Stderr: ioutil.Discard,
 	}
-	assert.NoError(t, e.ReadTaskfile())
-	assert.NoError(t, e.Run(task.Call{Task: "default"}))
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(taskfile.Call{Task: "default"}))
 
 	for _, f := range files {
 		f = filepath.Join(dir, f)
@@ -208,21 +249,22 @@ func TestStatus(t *testing.T) {
 		t.Errorf("File should not exists: %v", err)
 	}
 
+	var buff bytes.Buffer
 	e := &task.Executor{
 		Dir:    dir,
-		Stdout: ioutil.Discard,
-		Stderr: ioutil.Discard,
+		Stdout: &buff,
+		Stderr: &buff,
+		Silent: true,
 	}
-	assert.NoError(t, e.ReadTaskfile())
-	assert.NoError(t, e.Run(task.Call{Task: "gen-foo"}))
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(taskfile.Call{Task: "gen-foo"}))
 
 	if _, err := os.Stat(file); err != nil {
 		t.Errorf("File should exists: %v", err)
 	}
 
-	buff := bytes.NewBuffer(nil)
-	e.Stdout, e.Stderr = buff, buff
-	assert.NoError(t, e.Run(task.Call{Task: "gen-foo"}))
+	e.Silent = false
+	assert.NoError(t, e.Run(taskfile.Call{Task: "gen-foo"}))
 
 	if buff.String() != `task: Task "gen-foo" is up to date`+"\n" {
 		t.Errorf("Wrong output message: %s", buff.String())
@@ -253,7 +295,7 @@ func TestGenerates(t *testing.T) {
 		Stdout: buff,
 		Stderr: buff,
 	}
-	assert.NoError(t, e.ReadTaskfile())
+	assert.NoError(t, e.Setup())
 
 	for _, theTask := range []string{relTask, absTask} {
 		var destFile = filepath.Join(dir, theTask)
@@ -261,7 +303,7 @@ func TestGenerates(t *testing.T) {
 			fmt.Sprintf("task: Task \"%s\" is up to date\n", theTask)
 
 		// Run task for the first time.
-		assert.NoError(t, e.Run(task.Call{Task: theTask}))
+		assert.NoError(t, e.Run(taskfile.Call{Task: theTask}))
 
 		if _, err := os.Stat(srcFile); err != nil {
 			t.Errorf("File should exists: %v", err)
@@ -276,7 +318,7 @@ func TestGenerates(t *testing.T) {
 		buff.Reset()
 
 		// Re-run task to ensure it's now found to be up-to-date.
-		assert.NoError(t, e.Run(task.Call{Task: theTask}))
+		assert.NoError(t, e.Run(taskfile.Call{Task: theTask}))
 		if buff.String() != upToDate {
 			t.Errorf("Wrong output message: %s", buff.String())
 		}
@@ -305,16 +347,16 @@ func TestStatusChecksum(t *testing.T) {
 		Stdout: &buff,
 		Stderr: &buff,
 	}
-	assert.NoError(t, e.ReadTaskfile())
+	assert.NoError(t, e.Setup())
 
-	assert.NoError(t, e.Run(task.Call{Task: "build"}))
+	assert.NoError(t, e.Run(taskfile.Call{Task: "build"}))
 	for _, f := range files {
 		_, err := os.Stat(filepath.Join(dir, f))
 		assert.NoError(t, err)
 	}
 
 	buff.Reset()
-	assert.NoError(t, e.Run(task.Call{Task: "build"}))
+	assert.NoError(t, e.Run(taskfile.Call{Task: "build"}))
 	assert.Equal(t, `task: Task "build" is up to date`+"\n", buff.String())
 }
 
@@ -344,6 +386,101 @@ func TestCyclicDep(t *testing.T) {
 		Stdout: ioutil.Discard,
 		Stderr: ioutil.Discard,
 	}
-	assert.NoError(t, e.ReadTaskfile())
-	assert.IsType(t, &task.MaximumTaskCallExceededError{}, e.Run(task.Call{Task: "task-1"}))
+	assert.NoError(t, e.Setup())
+	assert.IsType(t, &task.MaximumTaskCallExceededError{}, e.Run(taskfile.Call{Task: "task-1"}))
+}
+
+func TestTaskVersion(t *testing.T) {
+	tests := []struct {
+		Dir     string
+		Version string
+	}{
+		{"testdata/version/v1", "1"},
+		{"testdata/version/v2", "2"},
+	}
+
+	for _, test := range tests {
+		t.Run(test.Dir, func(t *testing.T) {
+			e := task.Executor{
+				Dir:    test.Dir,
+				Stdout: ioutil.Discard,
+				Stderr: ioutil.Discard,
+			}
+			assert.NoError(t, e.Setup())
+			assert.Equal(t, test.Version, e.Taskfile.Version)
+			assert.Equal(t, 2, len(e.Taskfile.Tasks))
+		})
+	}
+}
+
+func TestTaskIgnoreErrors(t *testing.T) {
+	const dir = "testdata/ignore_errors"
+
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: ioutil.Discard,
+		Stderr: ioutil.Discard,
+	}
+	assert.NoError(t, e.Setup())
+
+	assert.NoError(t, e.Run(taskfile.Call{Task: "task-should-pass"}))
+	assert.Error(t, e.Run(taskfile.Call{Task: "task-should-fail"}))
+	assert.NoError(t, e.Run(taskfile.Call{Task: "cmd-should-pass"}))
+	assert.Error(t, e.Run(taskfile.Call{Task: "cmd-should-fail"}))
+}
+
+func TestExpand(t *testing.T) {
+	const dir = "testdata/expand"
+
+	home, err := homedir.Dir()
+	if err != nil {
+		t.Errorf("Couldn't get $HOME: %v", err)
+	}
+	var buff bytes.Buffer
+
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: &buff,
+		Stderr: &buff,
+	}
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(taskfile.Call{Task: "pwd"}))
+	assert.Equal(t, home, strings.TrimSpace(buff.String()))
+}
+
+func TestDry(t *testing.T) {
+	const dir = "testdata/dry"
+
+	file := filepath.Join(dir, "file.txt")
+	_ = os.Remove(file)
+
+	var buff bytes.Buffer
+
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: &buff,
+		Stderr: &buff,
+		Dry:    true,
+	}
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(taskfile.Call{Task: "build"}))
+
+	assert.Equal(t, "touch file.txt", strings.TrimSpace(buff.String()))
+	if _, err := os.Stat(file); err == nil {
+		t.Errorf("File should not exist %s", file)
+	}
+}
+
+func TestIncludes(t *testing.T) {
+	tt := fileContentTest{
+		Dir:       "testdata/includes",
+		Target:    "default",
+		TrimSpace: true,
+		Files: map[string]string{
+			"main.txt":               "main",
+			"included_directory.txt": "included_directory",
+			"included_taskfile.txt":  "included_taskfile",
+		},
+	}
+	tt.Run(t)
 }

taskfile.go

@@ -1,70 +0,0 @@
-package task
-
-import (
-	"fmt"
-	"io/ioutil"
-	"path/filepath"
-	"runtime"
-
-	"github.com/imdario/mergo"
-	"gopkg.in/yaml.v2"
-)
-
-// ReadTaskfile parses Taskfile from the disk
-func (e *Executor) ReadTaskfile() error {
-	path := filepath.Join(e.Dir, TaskFilePath)
-
-	var err error
-	e.Tasks, err = e.readTaskfileData(path)
-	if err != nil {
-		return err
-	}
-
-	osTasks, err := e.readTaskfileData(fmt.Sprintf("%s_%s", path, runtime.GOOS))
-	if err != nil {
-		switch err.(type) {
-		case taskFileNotFound:
-		default:
-			return err
-		}
-	}
-	if err := mergo.MapWithOverwrite(&e.Tasks, osTasks); err != nil {
-		return err
-	}
-	for name, task := range e.Tasks {
-		task.Task = name
-	}
-
-	return e.readTaskvars()
-}
-
-func (e *Executor) readTaskfileData(path string) (tasks map[string]*Task, err error) {
-	if b, err := ioutil.ReadFile(path + ".yml"); err == nil {
-		return tasks, yaml.UnmarshalStrict(b, &tasks)
-	}
-	return nil, taskFileNotFound{path}
-}
-
-func (e *Executor) readTaskvars() error {
-	var (
-		file           = filepath.Join(e.Dir, TaskvarsFilePath)
-		osSpecificFile = fmt.Sprintf("%s_%s", file, runtime.GOOS)
-	)
-
-	if b, err := ioutil.ReadFile(file + ".yml"); err == nil {
-		if err := yaml.UnmarshalStrict(b, &e.taskvars); err != nil {
-			return err
-		}
-	}
-
-	if b, err := ioutil.ReadFile(osSpecificFile + ".yml"); err == nil {
-		osTaskvars := make(Vars, 10)
-		if err := yaml.UnmarshalStrict(b, &osTaskvars); err != nil {
-			return err
-		}
-		for k, v := range osTaskvars {
-			e.taskvars[k] = v
-		}
-	}
-	return nil
-}

testdata/checksum/Taskfile.yml

@@ -2,6 +2,7 @@ build:
   cmds:
     - cp ./source.txt ./generated.txt
   sources:
+    - ./**/glob-with-inexistent-file.txt
     - ./source.txt
   generates:
     - ./generated.txt

testdata/dry/Taskfile.yml

@@ -0,0 +1,6 @@
+version: '2'
+
+tasks:
+  build:
+    cmds:
+      - touch file.txt

testdata/expand/Taskfile.yml

@@ -0,0 +1,8 @@
+version: '2'
+
+tasks:
+  pwd:
+    cmds:
+      - pwd
+    dir: '~'
+    silent: true

testdata/ignore_errors/Taskfile.yml

@@ -0,0 +1,20 @@
+version: '2'
+
+tasks:
+  task-should-pass:
+    cmds:
+      - exit 1
+    ignore_error: true
+
+  task-should-fail:
+    cmds:
+      - exit 1
+
+  cmd-should-pass:
+    cmds:
+      - cmd: exit 1
+        ignore_error: true
+
+  cmd-should-fail:
+    cmds:
+      - cmd: exit 1

testdata/includes/Taskfile.yml

@@ -0,0 +1,16 @@
+version: '2'
+
+includes:
+  included: ./included
+  included_taskfile: ./Taskfile2.yml
+
+tasks:
+  default:
+    cmds:
+      - task: gen
+      - task: included:gen
+      - task: included_taskfile:gen
+
+  gen:
+    cmds:
+      - echo main > main.txt

testdata/includes/Taskfile2.yml

@@ -0,0 +1,6 @@
+version: '2'
+
+tasks:
+  gen:
+    cmds:
+      - echo included_taskfile > included_taskfile.txt

testdata/includes/included/Taskfile.yml

@@ -0,0 +1,6 @@
+version: '2'
+
+tasks:
+  gen:
+    cmds:
+      - echo included_directory > included_directory.txt

testdata/vars/v1/.gitignore

@@ -0,0 +1 @@
+*.txt

testdata/vars/v2/.gitignore

@@ -0,0 +1 @@
+*.txt

testdata/vars/v2/Taskfile.yml

@@ -0,0 +1,56 @@
+version: '2'
+
+vars:
+  NESTED2: "{{.NESTED1}}-TaskfileVars"
+
+tasks:
+  default:
+    deps: [hello]
+
+  hello:
+    cmds:
+      - echo {{.FOO}} > foo.txt
+      - echo {{.BAR}} > bar.txt
+      - echo {{.BAZ}} > baz.txt
+      - echo '{{.TMPL_FOO}}' > tmpl_foo.txt
+      - echo '{{.TMPL_BAR}}' > tmpl_bar.txt
+      - echo '{{.TMPL_FOO2}}' > tmpl_foo2.txt
+      - echo '{{.TMPL_BAR2}}' > tmpl_bar2.txt
+      - echo '{{.SHTMPL_FOO}}' > shtmpl_foo.txt
+      - echo '{{.SHTMPL_FOO2}}' > shtmpl_foo2.txt
+      - echo '{{.NESTEDTMPL_FOO}}' > nestedtmpl_foo.txt
+      - echo '{{.NESTEDTMPL_FOO2}}' > nestedtmpl_foo2.txt
+      - echo {{.FOO2}} > foo2.txt
+      - echo {{.BAR2}} > bar2.txt
+      - echo {{.BAZ2}} > baz2.txt
+      - echo '{{.TMPL2_FOO}}' > tmpl2_foo.txt
+      - echo '{{.TMPL2_BAR}}' > tmpl2_bar.txt
+      - echo '{{.TMPL2_FOO2}}' > tmpl2_foo2.txt
+      - echo '{{.TMPL2_BAR2}}' > tmpl2_bar2.txt
+      - echo '{{.SHTMPL2_FOO}}' > shtmpl2_foo.txt
+      - echo '{{.SHTMPL2_FOO2}}' > shtmpl2_foo2.txt
+      - echo '{{.NESTEDTMPL2_FOO2}}' > nestedtmpl2_foo2.txt
+      - echo {{.OVERRIDE}} > override.txt
+      - echo '{{.NESTED3}}' > nested.txt
+    vars:
+      FOO: foo
+      BAR: $echo bar
+      BAZ:
+        sh: echo baz
+      TMPL_FOO: "{{.FOO}}"
+      TMPL_BAR: "{{.BAR}}"
+      TMPL_FOO2: "{{.FOO2}}"
+      TMPL_BAR2: "{{.BAR2}}"
+      SHTMPL_FOO:
+        sh: "echo '{{.FOO}}'"
+      SHTMPL_FOO2:
+        sh: "echo '{{.FOO2}}'"
+      NESTEDTMPL_FOO: "{{.TMPL_FOO}}"
+      NESTEDTMPL_FOO2: "{{.TMPL2_FOO2}}"
+      OVERRIDE: "bar"
+      NESTED3: "{{.NESTED2}}-TaskVars"
+
+  invalid-var-tmpl:
+    vars:
+      CHARS: "abcd"
+      INVALID: "{{range .CHARS}}no end"

testdata/vars/v2/Taskvars.yml

@@ -0,0 +1,13 @@
+FOO2: foo2
+BAR2: $echo bar2
+BAZ2:
+  sh: echo baz2
+TMPL2_FOO: "{{.FOO}}"
+TMPL2_BAR: "{{.BAR}}"
+TMPL2_FOO2: "{{.FOO2}}"
+TMPL2_BAR2: "{{.BAR2}}"
+SHTMPL2_FOO2:
+  sh: "echo '{{.FOO2}}'"
+NESTEDTMPL2_FOO2: "{{.TMPL2_FOO2}}"
+OVERRIDE: "foo"
+NESTED1: "Taskvars"

testdata/vars/v2/multiline/Taskfile.yml

@@ -0,0 +1,45 @@
+version: '2'
+tasks:
+  default:
+    vars:
+      MULTILINE: "\n\nfoo\n  bar\nfoobar\n\nbaz\n\n"
+    cmds:
+      - task: file
+        vars:
+          CONTENT:
+            sh: "echo 'foo\nbar'"
+          FILE: "echo_foobar.txt"
+      - task: file
+        vars:
+          CONTENT:
+            sh: "echo -n 'foo\nbar'"
+          FILE: "echo_n_foobar.txt"
+      - task: file
+        vars:
+          CONTENT:
+            sh: echo -n "{{.MULTILINE}}"
+          FILE: "echo_n_multiline.txt"
+      - task: file
+        vars:
+          CONTENT: "{{.MULTILINE}}"
+          FILE: "var_multiline.txt"
+      - task: file
+        vars:
+          CONTENT: "{{.MULTILINE | catLines}}"
+          FILE: "var_catlines.txt"
+      - task: enumfile
+        vars:
+          LINES: "{{.MULTILINE}}"
+          FILE: "var_enumfile.txt"
+  file:
+    cmds:
+      - |
+        cat << EOF > '{{.FILE}}'
+        {{.CONTENT}}
+        EOF
+  enumfile:
+    cmds:
+      - |
+        cat << EOF > '{{.FILE}}'
+        {{range $i, $line := .LINES| splitLines}}{{$i}}:{{$line}}
+        {{end}}EOF

testdata/version/v1/Taskfile.yml

@@ -0,0 +1,9 @@
+version: 1
+tasks:
+  foo:
+    cmds:
+      - echo "Foo"
+
+  bar:
+    cmds:
+      - echo "Bar"

testdata/version/v2/Taskfile.yml

@@ -0,0 +1,9 @@
+version: 2
+tasks:
+  foo:
+    cmds:
+      - echo "Foo"
+
+  bar:
+    cmds:
+      - echo "Bar"

variables.go

@@ -1,364 +1,81 @@
 package task
 
 import (
-	"bytes"
-	"errors"
-	"os"
 	"path/filepath"
-	"runtime"
-	"strings"
-	"text/template"
 
-	"github.com/go-task/task/internal/execext"
+	"github.com/go-task/task/internal/taskfile"
+	"github.com/go-task/task/internal/templater"
 
-	"github.com/Masterminds/sprig"
-	"github.com/mitchellh/go-homedir"
+	"mvdan.cc/sh/shell"
 )
 
-var (
-	// TaskvarsFilePath file containing additional variables.
-	TaskvarsFilePath = "Taskvars"
-)
-
-var (
-	// ErrCantUnmarshalVar is returned for invalid var YAML.
-	ErrCantUnmarshalVar = errors.New("task: can't unmarshal var value")
-)
-
-// Vars is a string[string] variables map.
-type Vars map[string]Var
-
-func getEnvironmentVariables() Vars {
-	var (
-		env = os.Environ()
-		m   = make(Vars, len(env))
-	)
-
-	for _, e := range env {
-		keyVal := strings.SplitN(e, "=", 2)
-		key, val := keyVal[0], keyVal[1]
-		m[key] = Var{Static: val}
-	}
-	return m
-}
-
-func (vs Vars) toStringMap() (m map[string]string) {
-	m = make(map[string]string, len(vs))
-	for k, v := range vs {
-		if v.Sh != "" {
-			// Dynamic variable is not yet resolved; trigger
-			// <no value> to be used in templates.
-			continue
-		}
-		m[k] = v.Static
-	}
-	return
-}
-
-// Var represents either a static or dynamic variable.
-type Var struct {
-	Static string
-	Sh     string
-}
-
-// UnmarshalYAML implements yaml.Unmarshaler interface.
-func (v *Var) UnmarshalYAML(unmarshal func(interface{}) error) error {
-	var str string
-	if err := unmarshal(&str); err == nil {
-		if strings.HasPrefix(str, "$") {
-			v.Sh = strings.TrimPrefix(str, "$")
-		} else {
-			v.Static = str
-		}
-		return nil
-	}
-
-	var sh struct {
-		Sh string
-	}
-	if err := unmarshal(&sh); err == nil {
-		v.Sh = sh.Sh
-		return nil
-	}
-
-	return ErrCantUnmarshalVar
-}
-
-// getVariables returns fully resolved variables following the priority order:
-// 1. Call variables (should already have been resolved)
-// 2. Environment (should not need to be resolved)
-// 3. Task variables, resolved with access to:
-//    - call, taskvars and environment variables
-// 4. Taskvars variables, resolved with access to:
-//    - environment variables
-func (e *Executor) getVariables(call Call) (Vars, error) {
-	t, ok := e.Tasks[call.Task]
-	if !ok {
-		return nil, &taskNotFoundError{call.Task}
-	}
-
-	merge := func(dest Vars, srcs ...Vars) {
-		for _, src := range srcs {
-			for k, v := range src {
-				dest[k] = v
-			}
-		}
-	}
-	varsKeys := func(srcs ...Vars) []string {
-		m := make(map[string]struct{})
-		for _, src := range srcs {
-			for k := range src {
-				m[k] = struct{}{}
-			}
-		}
-		lst := make([]string, 0, len(m))
-		for k := range m {
-			lst = append(lst, k)
-		}
-		return lst
-	}
-	replaceVars := func(dest Vars, keys []string) error {
-		r := varReplacer{vars: dest}
-		for _, k := range keys {
-			v := dest[k]
-			dest[k] = Var{
-				Static: r.replace(v.Static),
-				Sh:     r.replace(v.Sh),
-			}
-		}
-		return r.err
-	}
-	resolveShell := func(dest Vars, keys []string) error {
-		for _, k := range keys {
-			v := dest[k]
-			static, err := e.handleShVar(v)
-			if err != nil {
-				return err
-			}
-			dest[k] = Var{Static: static}
-		}
-		return nil
-	}
-	update := func(dest Vars, srcs ...Vars) error {
-		merge(dest, srcs...)
-		// updatedKeys ensures template evaluation is run only once.
-		updatedKeys := varsKeys(srcs...)
-		if err := replaceVars(dest, updatedKeys); err != nil {
-			return err
-		}
-		return resolveShell(dest, updatedKeys)
-	}
-
-	// Resolve taskvars variables to "result" with environment override variables.
-	override := getEnvironmentVariables()
-	result := make(Vars, len(e.taskvars)+len(t.Vars)+len(override))
-	if err := update(result, e.taskvars, override); err != nil {
-		return nil, err
-	}
-	// Resolve task variables to "result" with environment and call override variables.
-	merge(override, call.Vars)
-	if err := update(result, t.Vars, override); err != nil {
-		return nil, err
-	}
-	return result, nil
-}
-
-func (e *Executor) handleShVar(v Var) (string, error) {
-	if v.Static != "" || v.Sh == "" {
-		return v.Static, nil
-	}
-	e.muDynamicCache.Lock()
-	defer e.muDynamicCache.Unlock()
-
-	if result, ok := e.dynamicCache[v.Sh]; ok {
-		return result, nil
-	}
-
-	var stdout bytes.Buffer
-	opts := &execext.RunCommandOptions{
-		Command: v.Sh,
-		Dir:     e.Dir,
-		Stdout:  &stdout,
-		Stderr:  e.Stderr,
-	}
-	if err := execext.RunCommand(opts); err != nil {
-		return "", &dynamicVarError{cause: err, cmd: opts.Command}
-	}
-
-	// Trim a single trailing newline from the result to make most command
-	// output easier to use in shell commands.
-	result := strings.TrimSuffix(stdout.String(), "\n")
-
-	e.dynamicCache[v.Sh] = result
-	e.verboseErrf(`task: dynamic variable: '%s' result: '%s'`, v.Sh, result)
-
-	return result, nil
-}
-
 // CompiledTask returns a copy of a task, but replacing variables in almost all
 // properties using the Go template package.
-func (e *Executor) CompiledTask(call Call) (*Task, error) {
-	origTask, ok := e.Tasks[call.Task]
+func (e *Executor) CompiledTask(call taskfile.Call) (*taskfile.Task, error) {
+	origTask, ok := e.Taskfile.Tasks[call.Task]
 	if !ok {
 		return nil, &taskNotFoundError{call.Task}
 	}
 
-	vars, err := e.getVariables(call)
+	vars, err := e.Compiler.GetVariables(origTask, call)
 	if err != nil {
 		return nil, err
 	}
-	r := varReplacer{vars: vars}
+	r := templater.Templater{Vars: vars}
 
-	new := Task{
-		Task:      origTask.Task,
-		Desc:      r.replace(origTask.Desc),
-		Sources:   r.replaceSlice(origTask.Sources),
-		Generates: r.replaceSlice(origTask.Generates),
-		Status:    r.replaceSlice(origTask.Status),
-		Dir:       r.replace(origTask.Dir),
-		Vars:      nil,
-		Env:       r.replaceVars(origTask.Env),
-		Silent:    origTask.Silent,
-		Method:    r.replace(origTask.Method),
+	new := taskfile.Task{
+		Task:        origTask.Task,
+		Desc:        r.Replace(origTask.Desc),
+		Sources:     r.ReplaceSlice(origTask.Sources),
+		Generates:   r.ReplaceSlice(origTask.Generates),
+		Status:      r.ReplaceSlice(origTask.Status),
+		Dir:         r.Replace(origTask.Dir),
+		Vars:        nil,
+		Env:         r.ReplaceVars(origTask.Env),
+		Silent:      origTask.Silent,
+		Method:      r.Replace(origTask.Method),
+		Prefix:      r.Replace(origTask.Prefix),
+		IgnoreError: origTask.IgnoreError,
 	}
-	new.Dir, err = homedir.Expand(new.Dir)
+	new.Dir, err = shell.Expand(new.Dir, nil)
 	if err != nil {
 		return nil, err
 	}
 	if e.Dir != "" && !filepath.IsAbs(new.Dir) {
 		new.Dir = filepath.Join(e.Dir, new.Dir)
 	}
+	if new.Prefix == "" {
+		new.Prefix = new.Task
+	}
 	for k, v := range new.Env {
-		static, err := e.handleShVar(v)
+		static, err := e.Compiler.HandleDynamicVar(v)
 		if err != nil {
 			return nil, err
 		}
-		new.Env[k] = Var{Static: static}
+		new.Env[k] = taskfile.Var{Static: static}
 	}
 
 	if len(origTask.Cmds) > 0 {
-		new.Cmds = make([]*Cmd, len(origTask.Cmds))
+		new.Cmds = make([]*taskfile.Cmd, len(origTask.Cmds))
 		for i, cmd := range origTask.Cmds {
-			new.Cmds[i] = &Cmd{
-				Task:   r.replace(cmd.Task),
-				Silent: cmd.Silent,
-				Cmd:    r.replace(cmd.Cmd),
-				Vars:   r.replaceVars(cmd.Vars),
+			new.Cmds[i] = &taskfile.Cmd{
+				Task:        r.Replace(cmd.Task),
+				Silent:      cmd.Silent,
+				Cmd:         r.Replace(cmd.Cmd),
+				Vars:        r.ReplaceVars(cmd.Vars),
+				IgnoreError: cmd.IgnoreError,
 			}
-
 		}
 	}
 	if len(origTask.Deps) > 0 {
-		new.Deps = make([]*Dep, len(origTask.Deps))
+		new.Deps = make([]*taskfile.Dep, len(origTask.Deps))
 		for i, dep := range origTask.Deps {
-			new.Deps[i] = &Dep{
-				Task: r.replace(dep.Task),
-				Vars: r.replaceVars(dep.Vars),
+			new.Deps[i] = &taskfile.Dep{
+				Task: r.Replace(dep.Task),
+				Vars: r.ReplaceVars(dep.Vars),
 			}
 		}
 	}
 
-	return &new, r.err
-}
-
-// varReplacer is a help struct that allow us to call "replaceX" funcs multiple
-// times, without having to check for error each time. The first error that
-// happen will be assigned to r.err, and consecutive calls to funcs will just
-// return the zero value.
-type varReplacer struct {
-	vars   Vars
-	strMap map[string]string
-	err    error
-}
-
-func (r *varReplacer) replace(str string) string {
-	if r.err != nil || str == "" {
-		return ""
-	}
-
-	templ, err := template.New("").Funcs(templateFuncs).Parse(str)
-	if err != nil {
-		r.err = err
-		return ""
-	}
-
-	if r.strMap == nil {
-		r.strMap = r.vars.toStringMap()
-	}
-
-	var b bytes.Buffer
-	if err = templ.Execute(&b, r.strMap); err != nil {
-		r.err = err
-		return ""
-	}
-	return b.String()
-}
-
-func (r *varReplacer) replaceSlice(strs []string) []string {
-	if r.err != nil || len(strs) == 0 {
-		return nil
-	}
-
-	new := make([]string, len(strs))
-	for i, str := range strs {
-		new[i] = r.replace(str)
-	}
-	return new
-}
-
-func (r *varReplacer) replaceVars(vars Vars) Vars {
-	if r.err != nil || len(vars) == 0 {
-		return nil
-	}
-
-	new := make(Vars, len(vars))
-	for k, v := range vars {
-		new[k] = Var{
-			Static: r.replace(v.Static),
-			Sh:     r.replace(v.Sh),
-		}
-	}
-	return new
-}
-
-var (
-	templateFuncs template.FuncMap
-)
-
-func init() {
-	taskFuncs := template.FuncMap{
-		"OS":   func() string { return runtime.GOOS },
-		"ARCH": func() string { return runtime.GOARCH },
-		"catLines": func(s string) string {
-			s = strings.Replace(s, "\r\n", " ", -1)
-			return strings.Replace(s, "\n", " ", -1)
-		},
-		"splitLines": func(s string) []string {
-			s = strings.Replace(s, "\r\n", "\n", -1)
-			return strings.Split(s, "\n")
-		},
-		"fromSlash": func(path string) string {
-			return filepath.FromSlash(path)
-		},
-		"toSlash": func(path string) string {
-			return filepath.ToSlash(path)
-		},
-		"exeExt": func() string {
-			if runtime.GOOS == "windows" {
-				return ".exe"
-			}
-			return ""
-		},
-		// IsSH is deprecated.
-		"IsSH": func() bool { return true },
-	}
-	// Deprecated aliases for renamed functions.
-	taskFuncs["FromSlash"] = taskFuncs["fromSlash"]
-	taskFuncs["ToSlash"] = taskFuncs["toSlash"]
-	taskFuncs["ExeExt"] = taskFuncs["exeExt"]
-
-	templateFuncs = sprig.TxtFuncMap()
-	for k, v := range taskFuncs {
-		templateFuncs[k] = v
-	}
+	return &new, r.Err()
 }

vendor/github.com/Masterminds/semver/.travis.yml

@@ -1,25 +0,0 @@
-language: go
-
-go:
-  - 1.6
-  - 1.7
-  - 1.8
-  - tip
-
-# Setting sudo access to false will let Travis CI use containers rather than
-# VMs to run the tests. For more details see:
-# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
-# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
-sudo: false
-
-script:
-  - GO15VENDOREXPERIMENT=1 make setup
-  - GO15VENDOREXPERIMENT=1 make test
-
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/06e3328629952dabe3e0
-    on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
-    on_start: never     # options: [always|never|change] default: always

vendor/github.com/Masterminds/semver/CHANGELOG.md

@@ -1,72 +0,0 @@
-# 1.4.0 (2017-10-04)
-
-## Changed
-- #61: Update NewVersion to parse ints with a 64bit int size (thanks @zknill)
-
-# 1.3.1 (2017-07-10)
-
-## Fixed
-- Fixed #57: number comparisons in prerelease sometimes inaccurate
-
-# 1.3.0 (2017-05-02)
-
-## Added
-- #45: Added json (un)marshaling support (thanks @mh-cbon)
-- Stability marker. See https://masterminds.github.io/stability/
-
-## Fixed
-- #51: Fix handling of single digit tilde constraint (thanks @dgodd)
-
-## Changed
-- #55: The godoc icon moved from png to svg
-
-# 1.2.3 (2017-04-03)
-
-## Fixed
-- #46: Fixed 0.x.x and 0.0.x in constraints being treated as *
-
-# Release 1.2.2 (2016-12-13)
-
-## Fixed
-- #34: Fixed issue where hyphen range was not working with pre-release parsing.
-
-# Release 1.2.1 (2016-11-28)
-
-## Fixed
-- #24: Fixed edge case issue where constraint "> 0" does not handle "0.0.1-alpha"
-  properly.
-
-# Release 1.2.0 (2016-11-04)
-
-## Added
-- #20: Added MustParse function for versions (thanks @adamreese)
-- #15: Added increment methods on versions (thanks @mh-cbon)
-
-## Fixed
-- Issue #21: Per the SemVer spec (section 9) a pre-release is unstable and
-  might not satisfy the intended compatibility. The change here ignores pre-releases
-  on constraint checks (e.g., ~ or ^) when a pre-release is not part of the
-  constraint. For example, `^1.2.3` will ignore pre-releases while
-  `^1.2.3-alpha` will include them.
-
-# Release 1.1.1 (2016-06-30)
-
-## Changed
-- Issue #9: Speed up version comparison performance (thanks @sdboyer)
-- Issue #8: Added benchmarks (thanks @sdboyer)
-- Updated Go Report Card URL to new location
-- Updated Readme to add code snippet formatting (thanks @mh-cbon)
-- Updating tagging to v[SemVer] structure for compatibility with other tools.
-
-# Release 1.1.0 (2016-03-11)
-
-- Issue #2: Implemented validation to provide reasons a versions failed a
-  constraint.
-
-# Release 1.0.1 (2015-12-31)
-
-- Fixed #1: * constraint failing on valid versions.
-
-# Release 1.0.0 (2015-10-20)
-
-- Initial release

vendor/github.com/Masterminds/semver/Makefile

@@ -1,36 +0,0 @@
-.PHONY: setup
-setup:
-	go get -u gopkg.in/alecthomas/gometalinter.v1
-	gometalinter.v1 --install
-
-.PHONY: test
-test: validate lint
-	@echo "==> Running tests"
-	go test -v
-
-.PHONY: validate
-validate:
-	@echo "==> Running static validations"
-	@gometalinter.v1 \
-	  --disable-all \
-	  --enable deadcode \
-	  --severity deadcode:error \
-	  --enable gofmt \
-	  --enable gosimple \
-	  --enable ineffassign \
-	  --enable misspell \
-	  --enable vet \
-	  --tests \
-	  --vendor \
-	  --deadline 60s \
-	  ./... || exit_code=1
-
-.PHONY: lint
-lint:
-	@echo "==> Running linters"
-	@gometalinter.v1 \
-	  --disable-all \
-	  --enable golint \
-	  --vendor \
-	  --deadline 60s \
-	  ./... || :

vendor/github.com/Masterminds/semver/README.md

@@ -1,165 +0,0 @@
-# SemVer
-
-The `semver` package provides the ability to work with [Semantic Versions](http://semver.org) in Go. Specifically it provides the ability to:
-
-* Parse semantic versions
-* Sort semantic versions
-* Check if a semantic version fits within a set of constraints
-* Optionally work with a `v` prefix
-
-[![Stability:
-Active](https://masterminds.github.io/stability/active.svg)](https://masterminds.github.io/stability/active.html)
-[![Build Status](https://travis-ci.org/Masterminds/semver.svg)](https://travis-ci.org/Masterminds/semver) [![Build status](https://ci.appveyor.com/api/projects/status/jfk66lib7hb985k8/branch/master?svg=true&passingText=windows%20build%20passing&failingText=windows%20build%20failing)](https://ci.appveyor.com/project/mattfarina/semver/branch/master) [![GoDoc](https://godoc.org/github.com/Masterminds/semver?status.svg)](https://godoc.org/github.com/Masterminds/semver) [![Go Report Card](https://goreportcard.com/badge/github.com/Masterminds/semver)](https://goreportcard.com/report/github.com/Masterminds/semver)
-
-## Parsing Semantic Versions
-
-To parse a semantic version use the `NewVersion` function. For example,
-
-```go
-    v, err := semver.NewVersion("1.2.3-beta.1+build345")
-```
-
-If there is an error the version wasn't parseable. The version object has methods
-to get the parts of the version, compare it to other versions, convert the
-version back into a string, and get the original string. For more details
-please see the [documentation](https://godoc.org/github.com/Masterminds/semver).
-
-## Sorting Semantic Versions
-
-A set of versions can be sorted using the [`sort`](https://golang.org/pkg/sort/)
-package from the standard library. For example,
-
-```go
-    raw := []string{"1.2.3", "1.0", "1.3", "2", "0.4.2",}
-    vs := make([]*semver.Version, len(raw))
-	for i, r := range raw {
-		v, err := semver.NewVersion(r)
-		if err != nil {
-			t.Errorf("Error parsing version: %s", err)
-		}
-
-		vs[i] = v
-	}
-
-	sort.Sort(semver.Collection(vs))
-```
-
-## Checking Version Constraints
-
-Checking a version against version constraints is one of the most featureful
-parts of the package.
-
-```go
-    c, err := semver.NewConstraint(">= 1.2.3")
-    if err != nil {
-        // Handle constraint not being parseable.
-    }
-
-    v, _ := semver.NewVersion("1.3")
-    if err != nil {
-        // Handle version not being parseable.
-    }
-    // Check if the version meets the constraints. The a variable will be true.
-    a := c.Check(v)
-```
-
-## Basic Comparisons
-
-There are two elements to the comparisons. First, a comparison string is a list
-of comma separated and comparisons. These are then separated by || separated or
-comparisons. For example, `">= 1.2, < 3.0.0 || >= 4.2.3"` is looking for a
-comparison that's greater than or equal to 1.2 and less than 3.0.0 or is
-greater than or equal to 4.2.3.
-
-The basic comparisons are:
-
-* `=`: equal (aliased to no operator)
-* `!=`: not equal
-* `>`: greater than
-* `<`: less than
-* `>=`: greater than or equal to
-* `<=`: less than or equal to
-
-_Note, according to the Semantic Version specification pre-releases may not be
-API compliant with their release counterpart. It says,_
-
-> _A pre-release version indicates that the version is unstable and might not satisfy the intended compatibility requirements as denoted by its associated normal version._
-
-_SemVer comparisons without a pre-release value will skip pre-release versions.
-For example, `>1.2.3` will skip pre-releases when looking at a list of values
-while `>1.2.3-alpha.1` will evaluate pre-releases._
-
-## Hyphen Range Comparisons
-
-There are multiple methods to handle ranges and the first is hyphens ranges.
-These look like:
-
-* `1.2 - 1.4.5` which is equivalent to `>= 1.2, <= 1.4.5`
-* `2.3.4 - 4.5` which is equivalent to `>= 2.3.4, <= 4.5`
-
-## Wildcards In Comparisons
-
-The `x`, `X`, and `*` characters can be used as a wildcard character. This works
-for all comparison operators. When used on the `=` operator it falls
-back to the pack level comparison (see tilde below). For example,
-
-* `1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
-* `>= 1.2.x` is equivalent to `>= 1.2.0`
-* `<= 2.x` is equivalent to `<= 3`
-* `*` is equivalent to `>= 0.0.0`
-
-## Tilde Range Comparisons (Patch)
-
-The tilde (`~`) comparison operator is for patch level ranges when a minor
-version is specified and major level changes when the minor number is missing.
-For example,
-
-* `~1.2.3` is equivalent to `>= 1.2.3, < 1.3.0`
-* `~1` is equivalent to `>= 1, < 2`
-* `~2.3` is equivalent to `>= 2.3, < 2.4`
-* `~1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
-* `~1.x` is equivalent to `>= 1, < 2`
-
-## Caret Range Comparisons (Major)
-
-The caret (`^`) comparison operator is for major level changes. This is useful
-when comparisons of API versions as a major change is API breaking. For example,
-
-* `^1.2.3` is equivalent to `>= 1.2.3, < 2.0.0`
-* `^1.2.x` is equivalent to `>= 1.2.0, < 2.0.0`
-* `^2.3` is equivalent to `>= 2.3, < 3`
-* `^2.x` is equivalent to `>= 2.0.0, < 3`
-
-# Validation
-
-In addition to testing a version against a constraint, a version can be validated
-against a constraint. When validation fails a slice of errors containing why a
-version didn't meet the constraint is returned. For example,
-
-```go
-    c, err := semver.NewConstraint("<= 1.2.3, >= 1.4")
-    if err != nil {
-        // Handle constraint not being parseable.
-    }
-
-    v, _ := semver.NewVersion("1.3")
-    if err != nil {
-        // Handle version not being parseable.
-    }
-
-    // Validate a version against a constraint.
-    a, msgs := c.Validate(v)
-    // a is false
-    for _, m := range msgs {
-        fmt.Println(m)
-
-        // Loops over the errors which would read
-        // "1.3 is greater than 1.2.3"
-        // "1.3 is less than 1.4"
-    }
-```
-
-# Contribute
-
-If you find an issue or want to contribute please file an [issue](https://github.com/Masterminds/semver/issues)
-or [create a pull request](https://github.com/Masterminds/semver/pulls).

vendor/github.com/Masterminds/semver/appveyor.yml

@@ -1,44 +0,0 @@
-version: build-{build}.{branch}
-
-clone_folder: C:\gopath\src\github.com\Masterminds\semver
-shallow_clone: true
-
-environment:
-  GOPATH: C:\gopath
-
-platform:
-  - x64
-
-install:
-  - go version
-  - go env
-  - go get -u gopkg.in/alecthomas/gometalinter.v1
-  - set PATH=%PATH%;%GOPATH%\bin
-  - gometalinter.v1.exe --install
-
-build_script:
-  - go install -v ./...
-
-test_script:
-  - "gometalinter.v1 \
-    --disable-all \
-    --enable deadcode \
-    --severity deadcode:error \
-    --enable gofmt \
-    --enable gosimple \
-    --enable ineffassign \
-    --enable misspell \
-    --enable vet \
-    --tests \
-    --vendor \
-    --deadline 60s \
-    ./... || exit_code=1"
-  - "gometalinter.v1 \
-    --disable-all \
-    --enable golint \
-    --vendor \
-    --deadline 60s \
-    ./... || :"
-  - go test -v
-
-deploy: off

vendor/github.com/Masterminds/semver/constraints.go

@@ -233,12 +233,6 @@ func constraintNotEqual(v *Version, c *constraint) bool {
 
 func constraintGreaterThan(v *Version, c *constraint) bool {
 
-	// An edge case the constraint is 0.0.0 and the version is 0.0.0-someprerelease
-	// exists. This that case.
-	if !isNonZero(c.con) && isNonZero(v) {
-		return true
-	}
-
 	// If there is a pre-release on the version but the constraint isn't looking
 	// for them assume that pre-releases are not compatible. See issue 21 for
 	// more details.
@@ -271,11 +265,6 @@ func constraintLessThan(v *Version, c *constraint) bool {
 }
 
 func constraintGreaterThanEqual(v *Version, c *constraint) bool {
-	// An edge case the constraint is 0.0.0 and the version is 0.0.0-someprerelease
-	// exists. This that case.
-	if !isNonZero(c.con) && isNonZero(v) {
-		return true
-	}
 
 	// If there is a pre-release on the version but the constraint isn't looking
 	// for them assume that pre-releases are not compatible. See issue 21 for
@@ -415,12 +404,3 @@ func rewriteRange(i string) string {
 
 	return o
 }
-
-// Detect if a version is not zero (0.0.0)
-func isNonZero(v *Version) bool {
-	if v.Major() != 0 || v.Minor() != 0 || v.Patch() != 0 || v.Prerelease() != "" {
-		return true
-	}
-
-	return false
-}

vendor/github.com/Masterminds/semver/doc.go

@@ -47,7 +47,7 @@ parts of the package.
         // Handle constraint not being parseable.
     }
 
-    v, _ := semver.NewVersion("1.3")
+    v, err := semver.NewVersion("1.3")
     if err != nil {
         // Handle version not being parseable.
     }

vendor/github.com/Masterminds/semver/version.go

@@ -106,7 +106,7 @@ func MustParse(v string) *Version {
 // Note, if the original version contained a leading v this version will not.
 // See the Original() method to retrieve the original value. Semantic Versions
 // don't contain a leading v per the spec. Instead it's optional on
-// impelementation.
+// implementation.
 func (v *Version) String() string {
 	var buf bytes.Buffer
 
@@ -379,16 +379,15 @@ func comparePrePart(s, o string) int {
 
 	// When s or o are empty we can use the other in an attempt to determine
 	// the response.
-	if o == "" {
-		_, n := strconv.ParseInt(s, 10, 64)
-		if n != nil {
+	if s == "" {
+		if o != "" {
 			return -1
 		}
 		return 1
 	}
-	if s == "" {
-		_, n := strconv.ParseInt(o, 10, 64)
-		if n != nil {
+
+	if o == "" {
+		if s != "" {
 			return 1
 		}
 		return -1

vendor/github.com/Masterminds/sprig/.gitignore

@@ -1,2 +0,0 @@
-vendor/
-/.glide

vendor/github.com/Masterminds/sprig/.travis.yml

@@ -1,24 +0,0 @@
-language: go
-
-go:
-  - 1.6
-  - 1.7
-  - 1.8
-  - tip
-
-# Setting sudo access to false will let Travis CI use containers rather than
-# VMs to run the tests. For more details see:
-# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
-# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
-sudo: false
-
-script:
-  - make setup test
-
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/06e3328629952dabe3e0
-    on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
-    on_start: never     # options: [always|never|change] default: always

vendor/github.com/Masterminds/sprig/CHANGELOG.md

@@ -1,16 +0,0 @@
-# Release 1.2.0 (2016-02-01)
-
-- Added quote and squote
-- Added b32enc and b32dec
-- add now takes varargs
-- biggest now takes varargs
-
-# Release 1.1.0 (2015-12-29)
-
-- Added #4: Added contains function. strings.Contains, but with the arguments
-  switched to simplify common pipelines. (thanks krancour)
-- Added Travis-CI testing support
-
-# Release 1.0.0 (2015-12-23)
-
-- Initial release

vendor/github.com/Masterminds/sprig/Makefile

@@ -1,13 +0,0 @@
-
-HAS_GLIDE := $(shell command -v glide;)
-
-.PHONY: test
-test:
-	go test -v .
-
-.PHONY: setup
-setup:
-ifndef HAS_GLIDE
-	go get -u github.com/Masterminds/glide
-endif
-	glide install

vendor/github.com/Masterminds/sprig/README.md

@@ -1,81 +0,0 @@
-# Sprig: Template functions for Go templates
-[![Stability: Sustained](https://masterminds.github.io/stability/sustained.svg)](https://masterminds.github.io/stability/sustained.html)
-[![Build Status](https://travis-ci.org/Masterminds/sprig.svg?branch=master)](https://travis-ci.org/Masterminds/sprig)
-
-The Go language comes with a [built-in template
-language](http://golang.org/pkg/text/template/), but not
-very many template functions. This library provides a group of commonly
-used template functions.
-
-It is inspired by the template functions found in
-[Twig](http://twig.sensiolabs.org/documentation) and also in various
-JavaScript libraries, such as [underscore.js](http://underscorejs.org/).
-
-## Usage
-
-Template developers can read the [Sprig function documentation](http://masterminds.github.io/sprig/) to
-learn about the >100 template functions available.
-
-For Go developers wishing to include Sprig as a library in their programs,
-API documentation is available [at GoDoc.org](http://godoc.org/github.com/Masterminds/sprig), but
-read on for standard usage.
-
-### Load the Sprig library
-
-To load the Sprig `FuncMap`:
-
-```go
-
-import (
-  "github.com/Masterminds/sprig"
-  "html/template"
-)
-
-// This example illustrates that the FuncMap *must* be set before the
-// templates themselves are loaded.
-tpl := template.Must(
-  template.New("base").Funcs(sprig.FuncMap()).ParseGlob("*.html")
-)
-
-
-```
-
-### Call the functions inside of templates
-
-By convention, all functions are lowercase. This seems to follow the Go
-idiom for template functions (as opposed to template methods, which are
-TitleCase).
-
-
-Example:
-
-```
-{{ "hello!" | upper | repeat 5 }}
-```
-
-Produces:
-
-```
-HELLO!HELLO!HELLO!HELLO!HELLO!
-```
-
-## Principles:
-
-The following principles were used in deciding on which functions to add, and
-determining how to implement them.
-
-- Template functions should be used to build layout. Therefore, the following
-  types of operations are within the domain of template functions:
-  - Formatting
-  - Layout
-  - Simple type conversions
-  - Utilities that assist in handling common formatting and layout needs (e.g. arithmetic)
-- Template functions should not return errors unless there is no way to print
-  a sensible value. For example, converting a string to an integer should not
-  produce an error if conversion fails. Instead, it should display a default
-  value that can be displayed.
-- Simple math is necessary for grid layouts, pagers, and so on. Complex math
-  (anything other than arithmetic) should be done outside of templates.
-- Template functions only deal with the data passed into them. They never retrieve
-  data from a source.
-- Finally, do not override core Go template functions.

vendor/github.com/Masterminds/sprig/crypto.go

@@ -8,10 +8,12 @@ import (
 	"crypto/hmac"
 	"crypto/rand"
 	"crypto/rsa"
+	"crypto/sha1"
 	"crypto/sha256"
 	"crypto/x509"
 	"crypto/x509/pkix"
 	"encoding/asn1"
+	"encoding/base64"
 	"encoding/binary"
 	"encoding/hex"
 	"encoding/pem"
@@ -21,7 +23,7 @@ import (
 	"net"
 	"time"
 
-	uuid "github.com/satori/go.uuid"
+	"github.com/google/uuid"
 	"golang.org/x/crypto/scrypt"
 )
 
@@ -30,9 +32,14 @@ func sha256sum(input string) string {
 	return hex.EncodeToString(hash[:])
 }
 
+func sha1sum(input string) string {
+	hash := sha1.Sum([]byte(input))
+	return hex.EncodeToString(hash[:])
+}
+
 // uuidv4 provides a safe and secure UUID v4 implementation
 func uuidv4() string {
-	return fmt.Sprintf("%s", uuid.NewV4())
+	return fmt.Sprintf("%s", uuid.New())
 }
 
 var master_password_seed = "com.lyndir.masterpassword"
@@ -156,6 +163,49 @@ type certificate struct {
 	Key  string
 }
 
+func buildCustomCertificate(b64cert string, b64key string) (certificate, error) {
+	crt := certificate{}
+
+	cert, err := base64.StdEncoding.DecodeString(b64cert)
+	if err != nil {
+		return crt, errors.New("unable to decode base64 certificate")
+	}
+
+	key, err := base64.StdEncoding.DecodeString(b64key)
+	if err != nil {
+		return crt, errors.New("unable to decode base64 private key")
+	}
+
+	decodedCert, _ := pem.Decode(cert)
+	if decodedCert == nil {
+		return crt, errors.New("unable to decode certificate")
+	}
+	_, err = x509.ParseCertificate(decodedCert.Bytes)
+	if err != nil {
+		return crt, fmt.Errorf(
+			"error parsing certificate: decodedCert.Bytes: %s",
+			err,
+		)
+	}
+
+	decodedKey, _ := pem.Decode(key)
+	if decodedKey == nil {
+		return crt, errors.New("unable to decode key")
+	}
+	_, err = x509.ParsePKCS1PrivateKey(decodedKey.Bytes)
+	if err != nil {
+		return crt, fmt.Errorf(
+			"error parsing prive key: decodedKey.Bytes: %s",
+			err,
+		)
+	}
+
+	crt.Cert = string(cert)
+	crt.Key = string(key)
+
+	return crt, nil
+}
+
 func generateCertificateAuthority(
 	cn string,
 	daysValid int,
@@ -319,8 +369,13 @@ func getBaseCertTemplate(
 	if err != nil {
 		return nil, err
 	}
+	serialNumberUpperBound := new(big.Int).Lsh(big.NewInt(1), 128)
+	serialNumber, err := rand.Int(rand.Reader, serialNumberUpperBound)
+	if err != nil {
+		return nil, err
+	}
 	return &x509.Certificate{
-		SerialNumber: big.NewInt(1),
+		SerialNumber: serialNumber,
 		Subject: pkix.Name{
 			CommonName: cn,
 		},

vendor/github.com/Masterminds/sprig/date.go

@@ -66,7 +66,7 @@ func dateAgo(date interface{}) string {
 		t = time.Unix(int64(date), 0)
 	}
 	// Drop resolution to seconds
-	duration := time.Since(t) / time.Second * time.Second
+	duration := time.Since(t).Round(time.Second)
 	return duration.String()
 }
 

vendor/github.com/Masterminds/sprig/defaults.go

@@ -49,7 +49,6 @@ func empty(given interface{}) bool {
 	case reflect.Struct:
 		return false
 	}
-	return true
 }
 
 // coalesce returns the first non-empty value.
@@ -73,3 +72,12 @@ func toPrettyJson(v interface{}) string {
 	output, _ := json.MarshalIndent(v, "", "  ")
 	return string(output)
 }
+
+// ternary returns the first value if the last value is true, otherwise returns the second value.
+func ternary(vt interface{}, vf interface{}, v bool) interface{} {
+	if v {
+		return vt
+	}
+
+	return vf
+}

vendor/github.com/Masterminds/sprig/dict.go

@@ -27,10 +27,12 @@ func pluck(key string, d ...map[string]interface{}) []interface{} {
 	return res
 }
 
-func keys(dict map[string]interface{}) []string {
+func keys(dicts ...map[string]interface{}) []string {
 	k := []string{}
-	for key := range dict {
-		k = append(k, key)
+	for _, dict := range dicts {
+		for key := range dict {
+			k = append(k, key)
+		}
 	}
 	return k
 }
@@ -84,3 +86,12 @@ func merge(dst map[string]interface{}, srcs ...map[string]interface{}) interface
 	}
 	return dst
 }
+
+func values(dict map[string]interface{}) []interface{} {
+	values := []interface{}{}
+	for _, value := range dict {
+		values = append(values, value)
+	}
+
+	return values
+}

vendor/github.com/Masterminds/sprig/doc.go

@@ -110,6 +110,9 @@ Defaults:
 	  because it is an empty value.
 	- compact: Return a copy of a list with all of the empty values removed.
 	  'list 0 1 2 "" | compact' will return '[1 2]'
+	- ternary: Given a value,'true | ternary "b" "c"' will return "b".
+	  'false | ternary "b" "c"' will return '"c"'. Similar to the JavaScript ternary
+	  operator.
 
 OS:
 	- env: Resolve an environment variable
@@ -160,7 +163,7 @@ Data Structures:
 	  be assigned the empty string. Non-string keys are converted to strings as
 	  follows: []byte are converted, fmt.Stringers will have String() called.
 	  errors will have Error() called. All others will be passed through
-	  fmt.Sprtinf("%v").
+	  fmt.Sprintf("%v").
 
 Lists Functions:
 
@@ -189,9 +192,10 @@ These are used to manipulate dicts.
 	- hasKey: Takes a dict and a key, and returns boolean true if the key is in
 	  the dict.
 	- pluck: Given a key and one or more maps, get all of the values for that key.
-	- keys: Get an array of all of the keys in a dict.
+	- keys: Get an array of all of the keys in one or more dicts.
 	- pick: Select just the given keys out of the dict, and return a new dict.
 	- omit: Return a dict without the given keys.
+	- values: Returns a list (interface{}) of all dictionary values.
 
 Math Functions:
 

vendor/github.com/Masterminds/sprig/functions.go

@@ -142,6 +142,7 @@ var genericMap = map[string]interface{}{
 	"nindent":   nindent,
 	"replace":   replace,
 	"plural":    plural,
+	"sha1sum":   sha1sum,
 	"sha256sum": sha256sum,
 	"toString":  strval,
 
@@ -159,6 +160,8 @@ var genericMap = map[string]interface{}{
 	// split "/" foo/bar returns map[int]string{0: foo, 1: bar}
 	"split":     split,
 	"splitList": func(sep, orig string) []string { return strings.Split(orig, sep) },
+	// splitn "/" foo/bar/fuu returns map[int]string{0: foo, 1: bar/fuu}
+	"splitn":    splitn,
 	"toStrings": strslice,
 
 	"until":     until,
@@ -202,6 +205,7 @@ var genericMap = map[string]interface{}{
 	"compact":      compact,
 	"toJson":       toJson,
 	"toPrettyJson": toPrettyJson,
+	"ternary":      ternary,
 
 	// Reflection
 	"typeOf":     typeOf,
@@ -239,6 +243,7 @@ var genericMap = map[string]interface{}{
 	"pick":   pick,
 	"omit":   omit,
 	"merge":  merge,
+	"values": values,
 
 	"append": push, "push": push,
 	"prepend": prepend,
@@ -249,11 +254,13 @@ var genericMap = map[string]interface{}{
 	"reverse": reverse,
 	"uniq":    uniq,
 	"without": without,
-	"has":     func(needle interface{}, haystack []interface{}) bool { return inList(haystack, needle) },
+	"has":     has,
+	"slice":   slice,
 
 	// Crypto:
 	"genPrivateKey":     generatePrivateKey,
 	"derivePassword":    derivePassword,
+	"buildCustomCert":   buildCustomCertificate,
 	"genCA":             generateCertificateAuthority,
 	"genSelfSignedCert": generateSelfSignedCertificate,
 	"genSignedCert":     generateSignedCertificate,