v3: Do not include Taskfile_{{OS}}.yml automatically

internal/taskfile/read/taskfile.go

@@ -63,14 +63,20 @@ func Taskfile(dir string, entrypoint string) (*taskfile.Taskfile, error) {
 		}
 	}
 
-	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
+	v, err := t.ParsedVersion()
+	if err != nil {
+		return nil, err
+	}
+	if v < 3.0 {
+		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
+			}
 		}
 	}
 

internal/taskfile/taskfile.go

@@ -1,5 +1,10 @@
 package taskfile
 
+import (
+	"fmt"
+	"strconv"
+)
+
 // Taskfile represents a Taskfile.yml
 type Taskfile struct {
 	Version    string
@@ -49,3 +54,12 @@ func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	}
 	return nil
 }
+
+// ParsedVersion returns the version as a float64
+func (tf *Taskfile) ParsedVersion() (float64, error) {
+	v, err := strconv.ParseFloat(tf.Version, 64)
+	if err != nil {
+		return 0, fmt.Errorf(`task: Could not parse taskfile version "%s": %v`, tf.Version, err)
+	}
+	return v, nil
+}