fix: deep copying pointers inside slices (#1072)

taskfile/copy.go

@@ -1,23 +1,35 @@
 package taskfile
 
-import "golang.org/x/exp/constraints"
+type DeepCopier[T any] interface {
+	DeepCopy() T
+}
 
 func deepCopySlice[T any](orig []T) []T {
 	if orig == nil {
 		return nil
 	}
 	c := make([]T, len(orig))
-	copy(c, orig)
+	for i, v := range orig {
+		if copyable, ok := any(v).(DeepCopier[T]); ok {
+			c[i] = copyable.DeepCopy()
+		} else {
+			c[i] = v
+		}
+	}
 	return c
 }
 
-func deepCopyMap[K constraints.Ordered, V any](orig map[K]V) map[K]V {
+func deepCopyMap[K comparable, V any](orig map[K]V) map[K]V {
 	if orig == nil {
 		return nil
 	}
 	c := make(map[K]V, len(orig))
 	for k, v := range orig {
-		c[k] = v
+		if copyable, ok := any(v).(DeepCopier[V]); ok {
+			c[k] = copyable.DeepCopy()
+		} else {
+			c[k] = v
+		}
 	}
 	return c
 }