v3.1.0

Closes #412

Co-authored-by: Adam Wasila <adam.wasila@gmail.com>

.github/FUNDING.yml

@@ -1,2 +1,3 @@
 open_collective: task
 patreon: andreynering
+custom: 'https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=GSVDU63RKG45A&currency_code=BRL&source=url'

.github/ISSUE_TEMPLATE.md

@@ -1,6 +0,0 @@
-<!--
-If relevant, include the following information:
-- Task version
-- OS
-- Example Taskfile showing the issue
--->

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,14 @@
+---
+name: Bug Report
+about: Use the template to report bugs and issues
+labels: bug
+---
+
+- Task version:
+- Operating System:
+
+### Example Taskfile showing the issue
+
+```yaml
+
+```

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Questions, Ideas and General Discussions
+    url: https://github.com/go-task/task/discussions
+    about: Ask questions and discuss general ideas with the community

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,12 @@
+---
+name: Feature Request
+about: Use the template to make feature requests
+labels: feature
+---
+
+Describe in detail what feature do you want to see in Task.
+Give examples if possible.
+
+Please, search if this wasn't proposed before, and if this is more like an idea
+than a strong feature request, consider opening a
+[discussion](https://github.com/go-task/task/discussions) instead.

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: 1.14.x
+          go-version: 1.15.x
 
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v1

.github/workflows/test.yml

@@ -5,7 +5,7 @@ jobs:
     name: Test
     strategy:
       matrix:
-        go-version: [1.13.x, 1.14.x]
+        go-version: [1.14.x, 1.15.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{matrix.platform}}
     steps:

.gitignore

@@ -27,3 +27,4 @@ tags
 
 /bin
 /testdata/vars/v1
+/tmp

.goreleaser.yml

@@ -8,6 +8,10 @@ build:
   goarch:
     - 386
     - amd64
+    - arm
+    - arm64
+  goarm:
+    - 6
   ignore:
     - goos: darwin
       goarch: 386
@@ -40,4 +44,4 @@ nfpms:
     formats:
       - deb
       - rpm
-    name_template: "{{.ProjectName}}_{{.Os}}_{{.Arch}}"
+    file_name_template: "{{.ProjectName}}_{{.Os}}_{{.Arch}}"

CHANGELOG.md

@@ -1,16 +1,52 @@
 # Changelog
 
-# v3.0.0 - Preview 3
+## v3.1.0
 
+- Fix a bug when the checksum up-to-date resolution is used by a task
+  with a custom `label:` attribute
+  ([#412](https://github.com/go-task/task/issues/412)).
+- Starting from this release, we're releasing official ARMv6 and ARM64 binaries
+  for Linux
+  ([#375](https://github.com/go-task/task/issues/375), [#418](https://github.com/go-task/task/issues/418)).
+- Task now respects the order of declaration of included Taskfiles when
+  evaluating variables declaring by them
+  ([#393](https://github.com/go-task/task/issues/393)).
+- `set -e` is now automatically set on every command. This was done to fix an
+  issue where multiline string commands wouldn't really fail unless the
+  sentence was in the last line
+  ([#403](https://github.com/go-task/task/issues/403)).
+
+## v3.0.1
+
+- Allow use as a library by moving the required packages out of the `internal`
+  directory
+  ([#358](https://github.com/go-task/task/pull/358)).
+- Do not error if a specified dotenv file does not exist
+  ([#378](https://github.com/go-task/task/issues/378), [#385](https://github.com/go-task/task/pull/385)).
+- Fix panic when you have empty tasks in your Taskfile
+  ([#338](https://github.com/go-task/task/issues/338), [#362](https://github.com/go-task/task/pull/362)).
+
+## v3.0.0
+
+- On `v3`, all CLI variables will be considered global variables
+  ([#336](https://github.com/go-task/task/issues/336), [#341](https://github.com/go-task/task/pull/341))
+- Add support to `.env` like files
+  ([#324](https://github.com/go-task/task/issues/324), [#356](https://github.com/go-task/task/pull/356)).
+- Add `label:` to task so you can override the task name in the logs
+  ([#321](https://github.com/go-task/task/issues/321]), [#337](https://github.com/go-task/task/pull/337)).
+- Refactor how variables work on version 3
+  ([#311](https://github.com/go-task/task/pull/311)).
+- Disallow `expansions` on v3 since it has no effect.
+- `Taskvars.yml` is not automatically included anymore.
+- `Taskfile_{{OS}}.yml` is not automatically included anymore.
+- Allow interpolation on `includes`, so you can manually include a Taskfile
+  based on operation system, for example.
 - Expose `.TASK` variable in templates with the task name
   ([#252](https://github.com/go-task/task/issues/252)).
 - Implement short task syntax
   ([#194](https://github.com/go-task/task/issues/194), [#240](https://github.com/go-task/task/pull/240)).
 - Added option to make included Taskfile run commands on its own directory
   ([#260](https://github.com/go-task/task/issues/260), [#144](https://github.com/go-task/task/issues/144))
-
-# v3.0.0 - Preview 2
-
 - Taskfiles in version 1 are not supported anymore
   ([#237](https://github.com/go-task/task/pull/237)).
 - Added global `method:` option. With this option, you can set a default
@@ -25,9 +61,6 @@
   This is useful for manual checking when using external, or even remote,
   artifacts when using `status:`
   ([#216](https://github.com/go-task/task/pull/216)).
-
-## v3.0.0 - Preview 1
-
 - We're now using [slim-sprig](https://github.com/go-task/slim-sprig) instead of
   [sprig](https://github.com/Masterminds/sprig), which allowed a file size
   reduction of about 22%
@@ -36,6 +69,17 @@
   commands are green, errors are red, etc
   ([#207](https://github.com/go-task/task/pull/207)).
 
+## v2.8.1 - 2019-05-20
+
+- Fix error code for the `--help` flag
+  ([#300](https://github.com/go-task/task/issues/300), [#330](https://github.com/go-task/task/pull/330)).
+- Print version to stdout instead of stderr
+  ([#299](https://github.com/go-task/task/issues/299), [#329](https://github.com/go-task/task/pull/329)).
+- Supress `context` errors when using the `--watch` flag
+  ([#313](https://github.com/go-task/task/issues/313), [#317](https://github.com/go-task/task/pull/317)).
+- Support templating on description
+  ([#276](https://github.com/go-task/task/issues/276), [#283](https://github.com/go-task/task/pull/283)).
+
 ## v2.8.0 - 2019-12-07
 
 - Add `--parallel` flag (alias `-p`) to run tasks given by the command line in

README.md

@@ -1,22 +1,15 @@
-[![Build Status](https://travis-ci.org/go-task/task.svg?branch=master)](https://travis-ci.org/go-task/task)
+<div align="center">
+  <a href="https://taskfile.dev">
+    <img src="docs/Logo.png" width="200px" height="200px" />
+  </a>
 
-# Task
+  <h1>Task</h1>
 
-Task is a task runner / build tool that aims to be simpler and easier to use
-than, for example, [GNU Make](https://www.gnu.org/software/make/).
+  <p>
+    Task is a task runner / build tool that aims to be simpler and easier to use than, for example, <a href="https://www.gnu.org/software/make/">GNU Make<a>.
+  </p>
 
-See [taskfile.dev](https://taskfile.dev) for documentation.
-
----
-
-## Sponsors
-
-[![Sponsors](https://opencollective.com/task/sponsors.svg?width=890)](https://opencollective.com/task)
-
-## Backers
-
-[![Backers](https://opencollective.com/task/backers.svg?width=890)](https://opencollective.com/task)
-
-## Contributors
-
-[![Contributors](https://opencollective.com/task/contributors.svg?width=890)](https://github.com/go-task/task/graphs/contributors)
+  <p>
+    See <a href="https://taskfile.dev">taskfile.dev</a> for the documentation.
+  </p>
+</div>

Taskfile.yml

@@ -24,8 +24,14 @@ tasks:
     env:
       CGO_ENABLED: '0'
 
-  dl-deps:
-    desc: Downloads cli dependencies
+  mod:
+    desc: Downloads and tidy Go modules
+    cmds:
+      - go mod download
+      - go mod tidy
+
+  cli-deps:
+    desc: Downloads CLI dependencies
     cmds:
       - task: go-get
         vars: {REPO: golang.org/x/lint/golint}
@@ -34,17 +40,6 @@ tasks:
       - task: go-get
         vars: {REPO: github.com/goreleaser/godownloader}
 
-  vendor:
-    desc: Sync vendor/ directory according to go.mod file
-    cmds:
-      - go mod vendor
-
-  update-deps:
-    desc: Updates dependencies
-    cmds:
-      - dep ensure
-      - dep ensure -update
-
   clean:
     desc: Cleans temp files and folders
     cmds:
@@ -67,7 +62,7 @@ tasks:
     cmds:
       - goreleaser --snapshot --rm-dist
 
-  generate-install-script:
+  gen-install-script:
     desc: Generate install script using https://github.com/goreleaser/godownloader
     cmds:
       - godownloader --repo go-task/task -o install-task.sh

args/args.go

@@ -0,0 +1,70 @@
+package args
+
+import (
+	"strings"
+
+	"github.com/go-task/task/v3/taskfile"
+)
+
+// ParseV3 parses command line argument: tasks and global variables
+func ParseV3(args ...string) ([]taskfile.Call, *taskfile.Vars) {
+	var calls []taskfile.Call
+	var globals *taskfile.Vars
+
+	for _, arg := range args {
+		if !strings.Contains(arg, "=") {
+			calls = append(calls, taskfile.Call{Task: arg})
+			continue
+		}
+
+		if globals == nil {
+			globals = &taskfile.Vars{}
+		}
+		name, value := splitVar(arg)
+		globals.Set(name, taskfile.Var{Static: value})
+	}
+
+	if len(calls) == 0 {
+		calls = append(calls, taskfile.Call{Task: "default"})
+	}
+
+	return calls, globals
+}
+
+// ParseV2 parses command line argument: tasks and vars of each task
+func ParseV2(args ...string) ([]taskfile.Call, *taskfile.Vars) {
+	var calls []taskfile.Call
+	var globals *taskfile.Vars
+
+	for _, arg := range args {
+		if !strings.Contains(arg, "=") {
+			calls = append(calls, taskfile.Call{Task: arg})
+			continue
+		}
+
+		if len(calls) < 1 {
+			if globals == nil {
+				globals = &taskfile.Vars{}
+			}
+			name, value := splitVar(arg)
+			globals.Set(name, taskfile.Var{Static: value})
+		} else {
+			if calls[len(calls)-1].Vars == nil {
+				calls[len(calls)-1].Vars = &taskfile.Vars{}
+			}
+			name, value := splitVar(arg)
+			calls[len(calls)-1].Vars.Set(name, taskfile.Var{Static: value})
+		}
+	}
+
+	if len(calls) == 0 {
+		calls = append(calls, taskfile.Call{Task: "default"})
+	}
+
+	return calls, globals
+}
+
+func splitVar(s string) (string, string) {
+	pair := strings.SplitN(s, "=", 2)
+	return pair[0], pair[1]
+}

args/args_test.go

@@ -0,0 +1,204 @@
+package args_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/go-task/task/v3/args"
+	"github.com/go-task/task/v3/taskfile"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestArgsV3(t *testing.T) {
+	tests := []struct {
+		Args            []string
+		ExpectedCalls   []taskfile.Call
+		ExpectedGlobals *taskfile.Vars
+	}{
+		{
+			Args: []string{"task-a", "task-b", "task-c"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "task-a"},
+				{Task: "task-b"},
+				{Task: "task-c"},
+			},
+		},
+		{
+			Args: []string{"task-a", "FOO=bar", "task-b", "task-c", "BAR=baz", "BAZ=foo"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "task-a"},
+				{Task: "task-b"},
+				{Task: "task-c"},
+			},
+			ExpectedGlobals: &taskfile.Vars{
+				Keys: []string{"FOO", "BAR", "BAZ"},
+				Mapping: map[string]taskfile.Var{
+					"FOO": taskfile.Var{Static: "bar"},
+					"BAR": taskfile.Var{Static: "baz"},
+					"BAZ": taskfile.Var{Static: "foo"},
+				},
+			},
+		},
+		{
+			Args: []string{"task-a", "CONTENT=with some spaces"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "task-a"},
+			},
+			ExpectedGlobals: &taskfile.Vars{
+				Keys: []string{"CONTENT"},
+				Mapping: map[string]taskfile.Var{
+					"CONTENT": taskfile.Var{Static: "with some spaces"},
+				},
+			},
+		},
+		{
+			Args: []string{"FOO=bar", "task-a", "task-b"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "task-a"},
+				{Task: "task-b"},
+			},
+			ExpectedGlobals: &taskfile.Vars{
+				Keys: []string{"FOO"},
+				Mapping: map[string]taskfile.Var{
+					"FOO": {Static: "bar"},
+				},
+			},
+		},
+		{
+			Args: nil,
+			ExpectedCalls: []taskfile.Call{
+				{Task: "default"},
+			},
+		},
+		{
+			Args: []string{},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "default"},
+			},
+		},
+		{
+			Args: []string{"FOO=bar", "BAR=baz"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "default"},
+			},
+			ExpectedGlobals: &taskfile.Vars{
+				Keys: []string{"FOO", "BAR"},
+				Mapping: map[string]taskfile.Var{
+					"FOO": {Static: "bar"},
+					"BAR": {Static: "baz"},
+				},
+			},
+		},
+	}
+
+	for i, test := range tests {
+		t.Run(fmt.Sprintf("TestArgs%d", i+1), func(t *testing.T) {
+			calls, globals := args.ParseV3(test.Args...)
+			assert.Equal(t, test.ExpectedCalls, calls)
+			assert.Equal(t, test.ExpectedGlobals, globals)
+		})
+	}
+}
+
+func TestArgsV2(t *testing.T) {
+	tests := []struct {
+		Args            []string
+		ExpectedCalls   []taskfile.Call
+		ExpectedGlobals *taskfile.Vars
+	}{
+		{
+			Args: []string{"task-a", "task-b", "task-c"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "task-a"},
+				{Task: "task-b"},
+				{Task: "task-c"},
+			},
+		},
+		{
+			Args: []string{"task-a", "FOO=bar", "task-b", "task-c", "BAR=baz", "BAZ=foo"},
+			ExpectedCalls: []taskfile.Call{
+				{
+					Task: "task-a",
+					Vars: &taskfile.Vars{
+						Keys: []string{"FOO"},
+						Mapping: map[string]taskfile.Var{
+							"FOO": taskfile.Var{Static: "bar"},
+						},
+					},
+				},
+				{Task: "task-b"},
+				{
+					Task: "task-c",
+					Vars: &taskfile.Vars{
+						Keys: []string{"BAR", "BAZ"},
+						Mapping: map[string]taskfile.Var{
+							"BAR": taskfile.Var{Static: "baz"},
+							"BAZ": taskfile.Var{Static: "foo"},
+						},
+					},
+				},
+			},
+		},
+		{
+			Args: []string{"task-a", "CONTENT=with some spaces"},
+			ExpectedCalls: []taskfile.Call{
+				{
+					Task: "task-a",
+					Vars: &taskfile.Vars{
+						Keys: []string{"CONTENT"},
+						Mapping: map[string]taskfile.Var{
+							"CONTENT": taskfile.Var{Static: "with some spaces"},
+						},
+					},
+				},
+			},
+		},
+		{
+			Args: []string{"FOO=bar", "task-a", "task-b"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "task-a"},
+				{Task: "task-b"},
+			},
+			ExpectedGlobals: &taskfile.Vars{
+				Keys: []string{"FOO"},
+				Mapping: map[string]taskfile.Var{
+					"FOO": {Static: "bar"},
+				},
+			},
+		},
+		{
+			Args: nil,
+			ExpectedCalls: []taskfile.Call{
+				{Task: "default"},
+			},
+		},
+		{
+			Args: []string{},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "default"},
+			},
+		},
+		{
+			Args: []string{"FOO=bar", "BAR=baz"},
+			ExpectedCalls: []taskfile.Call{
+				{Task: "default"},
+			},
+			ExpectedGlobals: &taskfile.Vars{
+				Keys: []string{"FOO", "BAR"},
+				Mapping: map[string]taskfile.Var{
+					"FOO": {Static: "bar"},
+					"BAR": {Static: "baz"},
+				},
+			},
+		},
+	}
+
+	for i, test := range tests {
+		t.Run(fmt.Sprintf("TestArgs%d", i+1), func(t *testing.T) {
+			calls, globals := args.ParseV2(test.Args...)
+			assert.Equal(t, test.ExpectedCalls, calls)
+			assert.Equal(t, test.ExpectedGlobals, globals)
+		})
+	}
+}

cmd/task/task.go

@@ -2,15 +2,17 @@ package main
 
 import (
 	"context"
+	"fmt"
 	"log"
 	"os"
 	"os/signal"
 	"path/filepath"
 	"syscall"
 
-	"github.com/go-task/task/v2"
-	"github.com/go-task/task/v2/internal/args"
-	"github.com/go-task/task/v2/internal/logger"
+	"github.com/go-task/task/v3"
+	"github.com/go-task/task/v3/args"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/taskfile"
 
 	"github.com/spf13/pflag"
 )
@@ -52,6 +54,7 @@ func main() {
 
 	var (
 		versionFlag bool
+		helpFlag    bool
 		init        bool
 		list        bool
 		status      bool
@@ -69,6 +72,7 @@ func main() {
 	)
 
 	pflag.BoolVar(&versionFlag, "version", false, "show Task version")
+	pflag.BoolVarP(&helpFlag, "help", "h", false, "shows Task usage")
 	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")
@@ -86,7 +90,12 @@ func main() {
 	pflag.Parse()
 
 	if versionFlag {
-		log.Printf("Task version: %s\n", version)
+		fmt.Printf("Task version: %s\n", version)
+		return
+	}
+
+	if helpFlag {
+		pflag.Usage()
 		return
 	}
 
@@ -133,16 +142,27 @@ func main() {
 	if err := e.Setup(); err != nil {
 		log.Fatal(err)
 	}
+	v, err := e.Taskfile.ParsedVersion()
+	if err != nil {
+		log.Fatal(err)
+		return
+	}
 
 	if list {
 		e.PrintTasksHelp()
 		return
 	}
 
-	calls, globals := args.Parse(pflag.Args()...)
-	for name, value := range globals {
-		e.Taskfile.Vars[name] = value
+	var (
+		calls   []taskfile.Call
+		globals *taskfile.Vars
+	)
+	if v >= 3.0 {
+		calls, globals = args.ParseV3(pflag.Args()...)
+	} else {
+		calls, globals = args.ParseV2(pflag.Args()...)
 	}
+	e.Taskfile.Vars.Merge(globals)
 
 	ctx := context.Background()
 	if !watch {

completion/fish/task.fish

@@ -0,0 +1,24 @@
+function __task_get_tasks --description "Prints all available tasks with their description"
+	task -l | sed '1d' | awk '{ $1=""; print $0 }' | tr ': ', '\t' | string trim
+end
+
+complete -c task -d '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.' -xa "(__task_get_tasks)"
+
+
+complete -c task -s c -l color     -d 'colored output (default true)'
+complete -c task -s d -l dir       -d 'sets directory of execution'
+complete -c task      -l dry       -d 'compiles and prints tasks in the order that they would be run, without executing them'
+complete -c task -s f -l force     -d 'forces execution even when the task is up-to-date'
+complete -c task -s h -l help      -d 'shows Task usage'
+complete -c task -s i -l init      -d 'creates a new Taskfile.yml in the current folder'
+complete -c task -s l -l list      -d 'lists tasks with description of current Taskfile'
+complete -c task -s o -l output    -d 'sets output style: [interleaved|group|prefixed]' -xa "interleaved group prefixed"
+complete -c task -s p -l parallel  -d 'executes tasks provided on command line in parallel'
+complete -c task -s s -l silent    -d 'disables echoing'
+complete -c task      -l status    -d 'exits with non-zero exit code if any of the given tasks is not up-to-date'
+complete -c task      -l summary   -d 'show summary about a task'
+complete -c task -s t -l taskfile  -d 'choose which Taskfile to run. Defaults to "Taskfile.yml"'
+complete -c task -s v -l verbose   -d 'enables verbose mode'
+complete -c task      -l version   -d 'show Task version'
+complete -c task -s w -l watch     -d 'enables watch of the given task'

completion/zsh/_task

@@ -5,7 +5,7 @@ function __list() {
     local -a scripts
 
     if [ -f Taskfile.yml ]; then
-        scripts=($(task -l | sed '1d' | sed 's/^\* //' | awk '{ print $1 }' | sed 's/:$//' | sed 's/:/\\:/'))
+        scripts=($(task -l | sed '1d' | sed 's/^\* //' | awk '{ print $1 }' | sed 's/:$//' | sed 's/:/\\:/g'))
         _describe 'script' scripts
     fi
 }

docs/README.md

@@ -1,5 +1,9 @@
 # Task
 
+<div align="center">
+  <img id="logo" src="/Logo.png" height="250px" width="250px" />
+</div>
+
 Task is a task runner / build tool that aims to be simpler and easier to use
 than, for example, [GNU Make][make].
 
@@ -11,7 +15,7 @@ Once [installed](installation.md), you just need to describe your build tasks
 using a simple [YAML][yaml] schema in a file called `Taskfile.yml`:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   hello:
@@ -38,18 +42,6 @@ guide to check the full schema documentation and Task features.
   if a given set of files haven't changed since last run (based either on its
   timestamp or content).
 
-## Sponsors
-
-[![Sponsors](https://opencollective.com/task/sponsors.svg?width=890)](https://opencollective.com/task)
-
-## Backers
-
-[![Backers](https://opencollective.com/task/backers.svg?width=890)](https://opencollective.com/task)
-
-## Contributors
-
-[![Contributors](https://opencollective.com/task/contributors.svg?width=890)](https://github.com/go-task/task/graphs/contributors)
-
 [make]: https://www.gnu.org/software/make/
 [go]: https://golang.org/
 [yaml]: http://yaml.org/

docs/Taskfile.yml

@@ -10,3 +10,8 @@ tasks:
     desc: Serves the documentation site locally
     cmds:
       - docsify serve .
+
+  ico:
+    desc: Generate favicon.ico from Logo.png
+    cmds:
+      - convert -background transparent "Logo.png" -define icon:auto-resize=16,24,32,48,64,72,96,128,256 "favicon.ico"

docs/_sidebar.md

@@ -4,5 +4,5 @@
 - [Taskfile Versions](taskfile_versions.md)
 - [Examples](examples.md)
 - [Releasing Task](releasing_task.md)
-- [Alternative Task Runners](alternative_task_runners.md)
-- [![Github](https://icongram.jgog.in/simple/github.svg?color=808080&size=16)Github](https://github.com/go-task/task)
+- [Donate](donate.md)
+- [![GitHub](https://icongram.jgog.in/simple/github.svg?color=808080&size=16)GitHub](https://github.com/go-task/task)

docs/alternative_task_runners.md

@@ -1,17 +0,0 @@
-# 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/donate.md

@@ -0,0 +1,35 @@
+# Donate
+
+If you find this project useful, you can consider donating by using one of the
+channels listed below.
+
+This is just a way of saying "thank you", it won't give you any benefits like
+higher priority on issues or something similar.
+
+## Open Collective
+
+Task is on [Open Collective](https://opencollective.com/task) and you have
+these options to donate:
+
+- [$2 per month](https://opencollective.com/task/contribute/backer-4034/checkout)
+- [$5 per month](https://opencollective.com/task/contribute/supporter-8404/checkout)
+- [$20 per month](https://opencollective.com/task/contribute/sponsor-4035/checkout)
+- [Custom value - One-time donation option supported](https://opencollective.com/task/donate)
+
+## Patreon
+
+I'm also on [Patreon](https://www.patreon.com/andreynering) if
+you prefer:
+
+- [$5 per month](https://www.patreon.com/join/andreynering/checkout?rid=4229277)
+- [$10 per month](https://www.patreon.com/join/andreynering/checkout?rid=4229276)
+- [$15 per month](https://www.patreon.com/join/andreynering/checkout?rid=4229275)
+
+You can choose a custom value on any of the links above.
+
+Patreon does not support one-time donation. As a workaround you can fire a
+subscription and cancel it once the donation was succeded.
+
+## PayPal
+
+- [Any value - One-time donation](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=GSVDU63RKG45A&currency_code=BRL&source=url)

docs/index.html

@@ -6,25 +6,21 @@
     <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">
+    <link rel="stylesheet" href="//cdn.jsdelivr.net/npm/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>
+    <style>
+      #logo {
+        transition: all 0.7s ease;
+      }
+      #logo:hover {
+        -webkit-transform: rotateZ(360deg);
+        -ms-transform: rotateZ(360deg);
+        transform: rotateZ(360deg);
+      }
+      .app-name-link img {
+        width: 125px;
+      }
+    </style>
   </head>
   <body>
     <div id="app"></div>
@@ -32,18 +28,18 @@
       window.$docsify = {
         name: 'Task',
         repo: 'go-task/task',
-        ga: 'UA-126286662-1',
-        themeColor: '#00add8',
+        logo: 'Logo.png',
+        themeColor: '#29beb0',
         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>
+    <script src="//cdn.jsdelivr.net/npm/docsify/lib/docsify.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/docsify-themeable/dist/js/docsify-themeable.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/docsify-tabs"></script>
+    <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-bash.min.js"></script>
+    <script src="//cdn.jsdelivr.net/npm/prismjs/components/prism-yaml.min.js"></script>
   </body>
 </html>

docs/installation.md

@@ -1,12 +1,12 @@
 # Installation
 
-## Binary
+Task offers many installation methods. Check out the available methods below.
 
-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.
+## Package Managers
 
-## Homebrew
+<!-- tabs:start -->
+
+#### **Homebrew**
 
 If you're on macOS or Linux and have [Homebrew][homebrew] installed, getting
 Task is as simple as running:
@@ -15,19 +15,17 @@ Task is as simple as running:
 brew install go-task/tap/go-task
 ```
 
-> This installation method is only currently supported on amd64 architectures.
+#### **Snap**
 
-## Snap
-
-Task is available for [Snapcraft][snapcraft], but keep in mind that your
+Task is available in [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
+sudo snap install task --classic
 ```
 
-## Scoop
+#### **Scoop**
 
 If you're on Windows and have [Scoop][scoop] installed, use `extras` bucket
 to install Task like:
@@ -40,7 +38,7 @@ scoop install task
 This installation method is community owned. After a new release of Task, it
 may take some time until it's available on Scoop.
 
-## Arch Linux
+#### **AUR**
 
 If you're on Arch Linux you can install Task from
 [AUR](https://aur.archlinux.org/packages/taskfile-git) using your favorite
@@ -53,45 +51,40 @@ yay -S taskfile-git
 This installation method is community owned, but since it's `-git` version of
 the package, it's always latest available version based on the Git repository.
 
-## Go
+<!-- tabs:end -->
 
-Task now uses [Go Modules](https://github.com/golang/go/wiki/Modules), which
-means you may have trouble compiling it on older Go versions or using
-`$GOPATH`.
+## Get The Binary
 
-For CI environments we recommend using the [Install Script](#install-script)
-instead, which is faster and more stable, since it'll just download the latest
-released binary, instead of compiling the edge (master branch) version.
+<!-- tabs:start -->
 
-Installing in another directory:
+#### **Binary**
 
-```bash
-git clone https://github.com/go-task/task
-cd task
+You can download the binary from the [releases page on GitHub][releases] and
+add to your `$PATH`.
 
-# compiling binary to $GOPATH/bin
-go install -v ./cmd/task
+DEB and RPM packages are also available.
 
-# compiling it to another location
-# use -o ./task.exe on Windows
-go build -v -o ./task ./cmd/task
-```
+The `task_checksums.txt` file contains the SHA-256 checksum for each file.
 
-Both methods requires having the [Go][go] environment properly setup locally.
-
-## Install script
+#### **Install Script**
 
 We also have a [install script][installscript], which is very useful on
-scenarios like CIs. Many thanks to [godownloader][godownloader] for allowing
+scenarios like CIs. Many thanks to [GoDownloader][godownloader] for allowing
 easily generating this script.
 
 ```bash
-curl -sL https://taskfile.dev/install.sh | sh
+# For Default Installion to ./bin with debug logging
+sh -c "$(curl --location https://taskfile.dev/install.sh)" -- -d
+
+# For Installation To /usr/local/bin for userwide access with debug logging
+# May require sudo sh
+sh -c "$(curl --location https://taskfile.dev/install.sh)" -- -d -b /usr/local/bin
+
 ```
 
 > This method will download the binary on the local `./bin` directory by default.
 
-## GitHub Actions
+#### **GitHub Actions**
 
 If you want to install Task in GitHub Actions you can try using
 [this action](https://github.com/arduino/actions/tree/master/setup-taskfile)
@@ -104,8 +97,44 @@ by the Arduino team:
 
 This installation method is community owned.
 
+<!-- tabs:end -->
+
+## Build From Source
+
+<!-- tabs:start -->
+
+#### **Go Modules**
+
+First, make sure you have [Go][go] properly installed and setup.
+
+You can easily install it globally by running:
+
+```bash
+go get -u github.com/go-task/task/v3/cmd/task
+```
+
+Or you can install into another directory:
+
+```bash
+git clone https://github.com/go-task/task
+cd task
+
+# Compiling binary to $GOPATH/bin
+go install -v ./cmd/task
+
+# Compiling it to another location.
+# Use -o ./task.exe on Windows.
+go build -v -o ./task ./cmd/task
+```
+
+> For CI environments we recommend using the [Install Script](#get-the-binary)
+> instead, which is faster and more stable, since it'll just download the latest
+> released binary, instead of compiling the edge (master branch) version.
+
+<!-- tabs:end -->
+
 [go]: https://golang.org/
-[snapcraft]: https://snapcraft.io/
+[snapcraft]: https://snapcraft.io/task
 [homebrew]: https://brew.sh/
 [installscript]: https://github.com/go-task/task/blob/master/install-task.sh
 [releases]: https://github.com/go-task/task/releases

docs/releasing_task.md

@@ -4,9 +4,9 @@ The release process of Task 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)
+[GitHub Actions](https://github.com/go-task/task/actions) should release
+artifacts automatically when a new Git tag is pushed to master
+(raw executables and DEB and RPM packages).
 
 # Homebrew
 

docs/styleguide.md

@@ -56,7 +56,7 @@ tasks:
 
 ```yaml
 # bad
-version: 2
+version: '3'
 includes:
   docker: ./docker/Taskfile.yml
 output: prefixed
@@ -70,7 +70,7 @@ tasks:
 
 
 # good
-version: 2
+version: '3'
 
 includes:
   docker: ./docker/Taskfile.yml
@@ -92,7 +92,7 @@ tasks:
 
 ```yaml
 # bad
-version: 2
+version: '3'
 
 tasks:
   foo:
@@ -107,7 +107,7 @@ tasks:
 
 
 # good
-version: 2
+version: '3'
 
 tasks:
   foo:
@@ -127,7 +127,7 @@ tasks:
 
 ```yaml
 # bad
-version: 2
+version: '3'
 
 vars:
   binary_name: myapp
@@ -139,7 +139,7 @@ tasks:
 
 
 # good
-version: 2
+version: '3'
 
 vars:
   BINARY_NAME: myapp
@@ -154,7 +154,7 @@ tasks:
 
 ```yaml
 # bad
-version: 2
+version: '3'
 
 tasks:
   greet:
@@ -163,7 +163,7 @@ tasks:
 
 
 # good
-version: 2
+version: '3'
 
 tasks:
   greet:
@@ -177,7 +177,7 @@ This convention is also used by most people for any Go templating.
 
 ```yaml
 # bad
-version: 2
+version: '3'
 
 tasks:
   do_something_fancy:
@@ -186,7 +186,7 @@ tasks:
 
 
 # good
-version: 2
+version: '3'
 
 tasks:
   do-something-fancy:
@@ -198,7 +198,7 @@ tasks:
 
 ```yaml
 # good
-version: 2
+version: '3'
 
 tasks:
   docker:build:

docs/taskfile_versions.md

@@ -9,8 +9,8 @@ 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
+`2.0.0` is accepted. If you choose to use `2.0` Task will not enable future
+`2.1` features, but if you choose to use `2`, then any `2.x.x` features will be
 available, but not `3.0.0+`.
 
 ## Version 1
@@ -35,7 +35,7 @@ The variable priority order was also different:
 
 ## Version 2.0
 
-At version 2, we introduced the `version:` key, to allow us to envolve Task
+At version 2, we introduced the `version:` key, to allow us to evolve Task
 with new features without breaking existing Taskfiles. The new syntax is as
 follows:
 
@@ -110,7 +110,7 @@ tasks:
   prefix: server
 ```
 
-From this version it's not also possible to ignore errors of a command or task
+From this version it's also possible to ignore errors of a command or task
 (check documentation [here][ignore_errors]):
 
 ```yaml
@@ -163,3 +163,63 @@ Please check the [documentation][includes]
 [output]: usage.md#output-syntax
 [ignore_errors]: usage.md#ignore-errors
 [includes]: usage.md#including-other-taskfiles
+
+## Version 3
+
+These are some major changes done on `v3`:
+
+- Task's output will now be colored
+- Added support for `.env` like files
+- Added `label:` setting to task so one can override how the task name
+  appear in the logs
+- A global `method:` was added to allow setting the default method,
+  and Task's default changed to `checksum`
+- Two magic variables were added when using `status:`: `CHECKSUM` and
+  `TIMESTAMP` which contains, respectively, the md5 checksum and greatest
+  modification timestamp of the files listed on `sources:`
+- Also, the `TASK` variable is always available with the current task name
+- CLI variables are always treated as global variables
+- Added `dir:` option to `includes` to allow choosing on which directory an
+  included Taskfile will run:
+
+```yaml
+includes:
+  docs:
+    taskfile: ./docs
+    dir: ./docs
+```
+
+- Implemented short task syntax. All below syntaxes are equivalent:
+
+```yaml
+version: '3'
+
+tasks:
+  print:
+    cmds:
+      - echo "Hello, World!"
+```
+
+```yaml
+version: '3'
+
+tasks:
+  print:
+    - echo "Hello, World!"
+```
+
+```yaml
+version: '3'
+
+tasks:
+  print: echo "Hello, World!"
+```
+
+- There was a major refactor on how variables are handled. They're now easier
+  to understand. The `expansions:` setting was removed as it became unncessary.
+  This is the order in which Task will process variables, each level can see
+  the variables set by the previous one and override those.
+  - Environment variables
+  - Global + CLI variables
+  - Call variables
+  - Task variables

docs/usage.md

@@ -8,7 +8,7 @@ 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'
+version: '3'
 
 tasks:
   build:
@@ -33,12 +33,14 @@ executable called must be available by the OS or in PATH.
 
 If you omit a task name, "default" will be assumed.
 
-## Environment
+## Environment variables
+
+### Task
 
 You can use `env` to set custom environment variables for a specific task:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   greet:
@@ -52,7 +54,7 @@ Additionally, you can set globally environment variables, that'll be available
 to all tasks:
 
 ```yaml
-version: '2'
+version: '3'
 
 env:
   GREETING: Hey, there!
@@ -66,53 +68,37 @@ tasks:
 > NOTE: `env` supports expansion and retrieving output from a shell command
 > just like variables, as you can see on the [Variables](#variables) section.
 
-## Operating System specific tasks
+### .env files
 
-If you add a `Taskfile_{{GOOS}}.yml` you can override or amend your Taskfile
-based on the operating system.
+You can also ask Task to include `.env` like files by using the `dotenv:`
+setting:
 
-Example:
-
-Taskfile.yml:
-
-```yaml
-version: '2'
-
-tasks:
-  build:
-    cmds:
-      - echo "default"
+```
+# .env
+KEYNAME=VALUE
 ```
 
-Taskfile_linux.yml:
 
 ```yaml
-version: '2'
+# Taskfile.yml
+
+version: '3'
+
+dotenv: ['.env']
 
 tasks:
-  build:
+  greet:
     cmds:
-      - echo "linux"
+      - echo "Using $KEYNAME"
 ```
 
-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`, `Taskvars_linux.yml`, or `Taskvars_darwin.yml`. See the
-[variables section](#variables) below.
-
 ## Including other Taskfiles
 
-> This feature is still experimental and may have bugs.
-
 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'
+version: '3'
 
 includes:
   docs: ./documentation # will look for ./documentation/Taskfile.yml
@@ -124,6 +110,21 @@ 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.
 
+### OS-specific Taskfiles
+
+With `version: '2'`, task automatically includes any `Taskfile_{{OS}}.yml`
+if it exists (for example: `Taskfile_windows.yml`, `Taskfile_linux.yml` or
+`Taskfile_darwin.yml`). Since this behavior was a bit too implicit, it
+was removed on version 3, but you still can have a similar behavior by
+explicitly importing these files:
+
+```yaml
+version: '3'
+
+includes:
+  build: ./Taskfile_{{OS}}.yml
+```
+
 ### Directory of included Taskfile
 
 By default, included Taskfile's tasks are ran in the current directory, even
@@ -153,7 +154,7 @@ located. But you can easily make the task run in another folder informing
 `dir`:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   serve:
@@ -167,11 +168,15 @@ If the directory doesn't exist, `task` creates it.
 
 ## Task dependencies
 
+> Dependencies run in parallel, so dependencies of a task shouldn't depend one
+> another. If you want to force tasks to run serially take a look at the
+> [Calling Another Task](#calling-another-task) section below.
+
 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'
+version: '3'
 
 tasks:
   build:
@@ -190,7 +195,7 @@ In the above example, `assets` will always run right before `build` if you run
 A task can have only dependencies and no commands to group tasks together:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   assets:
@@ -215,7 +220,7 @@ 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'
+version: '3'
 
 tasks:
   default:
@@ -239,7 +244,7 @@ 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'
+version: '3'
 
 tasks:
   main-task:
@@ -261,19 +266,19 @@ Overriding variables in the called task is as simple as informing `vars`
 attribute:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
-  main-task:
+  greet:
+    vars:
+      RECIPIENT: '{{default "World" .RECIPIENT}}'
     cmds:
-      - task: write-file
-        vars: {FILE: "hello.txt", CONTENT: "Hello!"}
-      - task: write-file
-        vars: {FILE: "world.txt", CONTENT: "World!"}
+      - echo "Hello, {{.RECIPIENT}}!"
 
-  write-file:
+  greet-pessimistically:
     cmds:
-      - echo "{{.CONTENT}}" > {{.FILE}}
+      - task: greet
+        vars: {RECIPIENT: "Cruel World"}
 ```
 
 The above syntax is also supported in `deps`.
@@ -290,7 +295,7 @@ 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'
+version: '3'
 
 tasks:
   build:
@@ -315,18 +320,18 @@ tasks:
       - 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
+`sources` and `generates` can be files or file patterns. When given,
+Task will compare the checksum of the source 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).
 
+If you prefer this check to be made by the modification timestamp of the files,
+instead of its checksum (content), just set the `method` property to `timestamp`.
+
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   build:
@@ -341,13 +346,17 @@ tasks:
 
 > TIP: method `none` skips any validation and always run the task.
 
+> NOTE: for the `checksum` (default) method to work, it's only necessary to
+> inform the source files, but if you want to use the `timestamp` method, you
+> also need to inform the generated files with `generates`.
+
 ### Using programmatic checks to indicate a task is up to date.
 
 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'
+version: '3'
 
 tasks:
   generate-files:
@@ -392,7 +401,7 @@ conditions to be _true_ you can use the `preconditions` stanza.
 expansion and they SHOULD all return 0.
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   generate-files:
@@ -420,19 +429,20 @@ executing tasks that depend on it, a `precondition` will fail a task, along
 with any other tasks that depend on it.
 
 ```yaml
-version: '2'
+version: '3'
+
 tasks:
-  task_will_fail:
+  task-will-fail:
     preconditions:
       - sh: "exit 1"
 
-  task_will_also_fail:
+  task-will-also-fail:
     deps:
-      - task_will_fail
+      - task-will-fail
 
-  task_will_still_fail:
+  task-will-still-fail:
     cmds:
-      - task: task_will_fail
+      - task: task-will-fail
       - echo "I will not run"
 ```
 
@@ -442,10 +452,9 @@ 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 in the task definition
-- Variables given while calling a task from another.
+- 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
+- Global variables (those declared in the `vars:` option in the Taskfile)
 - Environment variables
 
 Example of sending parameters with environment variables:
@@ -454,27 +463,20 @@ Example of sending parameters with environment variables:
 $ TASK_VARIABLE=a-value task do-something
 ```
 
-> TIP: A special variable `.TASK` is always available containg the task name.
+> TIP: A special variable `.TASK` is always available containing the task name.
 
 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.
+the command.
 
 ```bash
 $ task write-file FILE=file.txt "CONTENT=Hello, World!" print "MESSAGE=All done!"
 ```
 
-If you want to set global variables using this syntax, give it before any task:
-
-```bash
-$ task OUTPUT=file.txt generate-file
-```
-
 Example of locally declared vars:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   print-var:
@@ -487,7 +489,7 @@ tasks:
 Example of global vars in a `Taskfile.yml`:
 
 ```yaml
-version: '2'
+version: '3'
 
 vars:
   GREETING: Hello from Taskfile!
@@ -498,38 +500,6 @@ tasks:
       - 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.
@@ -537,7 +507,7 @@ 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'
+version: '3'
 
 tasks:
   build:
@@ -559,7 +529,7 @@ All functions by the Go's [slim-sprig lib](https://go-task.github.io/slim-sprig/
 are available. The following example gets the current date in a given format:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   print-date:
@@ -585,7 +555,7 @@ Task also adds the following functions:
 Example:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   print-os:
@@ -613,7 +583,7 @@ Running `task --list` (or `task -l`) lists all tasks with a description.
 The following Taskfile:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   build:
@@ -644,11 +614,11 @@ would print the following output:
 
 ## Display summary of task
 
-Running `task --summary task-name` will show a summary of a task
+Running `task --summary task-name` will show a summary of a task.
 The following Taskfile:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   release:
@@ -656,7 +626,7 @@ tasks:
     summary: |
       Release your project to github
 
-      It will build your project before starting the release it.
+      It will build your project before starting the release.
       Please make sure that you have set GITHUB_TOKEN before starting.
     cmds:
       - your-release-tool
@@ -673,7 +643,7 @@ task: release
 
 Release your project to github
 
-It will build your project before starting the release it.
+It will build your project before starting the release.
 Please make sure that you have set GITHUB_TOKEN before starting.
 
 dependencies:
@@ -687,13 +657,37 @@ If the task does not have a summary or a description, a warning is printed.
 
 Please note: *showing the summary will not execute the command*.
 
+## Overriding task name
+
+Sometimes you may want to override the task name print on summary, up-to-date
+messages to STDOUT, etc. In this case you can just set `label:`, which can also
+be interpolated with variables:
+
+```yaml
+version: '3'
+
+tasks:
+  default:
+    - task: print
+      vars:
+        MESSAGE: hello
+    - task: print
+      vars:
+        MESSAGE: world
+
+  print:
+    label: 'print-{{.MESSAGE}}'
+    cmds:
+      - echo "{{.MESSAGE}}"
+```
+
 ## Silent mode
 
 Silent mode disables echoing of commands before Task runs it.
 For the following Taskfile:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   echo:
@@ -719,7 +713,7 @@ There are four ways to enable silent mode:
 * At command level:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   echo:
@@ -731,7 +725,7 @@ tasks:
 * At task level:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   echo:
@@ -743,7 +737,7 @@ tasks:
 * Globally at Taskfile level:
 
 ```yaml
-version: '2'
+version: '3'
 
 silent: true
 
@@ -758,7 +752,7 @@ tasks:
 If you want to suppress STDOUT instead, just redirect a command to `/dev/null`:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   echo:
@@ -777,7 +771,7 @@ You have the option to ignore errors during command execution.
 Given the following Taskfile:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   echo:
@@ -790,7 +784,7 @@ Task will abort the execution after running `exit 1` because the status code `1`
 However it is possible to continue with execution using `ignore_error`:
 
 ```yaml
-version: '2'
+version: '3'
 
 tasks:
   echo:
@@ -821,7 +815,7 @@ options you can choose:
 To choose another one, just set it to root in the Taskfile:
 
 ```yaml
-version: '2'
+version: '3'
 
 output: 'group'
 
@@ -838,7 +832,7 @@ tasks:
  with the `prefix:` attribute:
 
  ```yaml
-version: '2'
+version: '3'
 
 output: prefixed
 
@@ -871,7 +865,7 @@ $ task default
 ## Short task syntax
 
 Starting on Task v3, you can now write tasks with a shorter syntax if they
-have the default settings (e.g. no custom `env:`, `vars:`, `silent:` , etc):
+have the default settings (e.g. no custom `env:`, `vars:`, `desc:`, `silent:` , etc):
 
 ```yaml
 version: '3'
@@ -879,16 +873,16 @@ version: '3'
 tasks:
   build: go build -v -o ./app{{exeExt}} .
 
-  build:
+  run:
     - task: build
     - ./app{{exeExt}} -h localhost -p 8080
 ```
 
 ## Watch tasks
 
-If you give a `--watch` or `-w` argument, task will watch for file changes
+With the flags `--watch` or `-w` 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.
+so task knows which files to watch.
 
 [gotemplate]: https://golang.org/pkg/text/template/
 [minify]: https://github.com/tdewolff/minify/tree/master/cmd/minify

go.mod

@@ -1,16 +1,17 @@
-module github.com/go-task/task/v2
+module github.com/go-task/task/v3
 
 require (
 	github.com/fatih/color v1.7.0
-	github.com/go-task/slim-sprig v0.0.0-20191103011349-ba7d6a531428
+	github.com/go-task/slim-sprig v0.0.0-20200516131648-f9bac4e523eb
+	github.com/joho/godotenv v1.3.0
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/mattn/go-zglob v0.0.1
 	github.com/radovskyb/watcher v1.0.5
 	github.com/spf13/pflag v1.0.3
-	github.com/stretchr/testify v1.4.0
-	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
-	gopkg.in/yaml.v2 v2.2.2
-	mvdan.cc/sh/v3 v3.0.2
+	github.com/stretchr/testify v1.5.1
+	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c
+	mvdan.cc/sh/v3 v3.2.1
 )
 
 go 1.13

go.sum

@@ -1,12 +1,22 @@
+github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
+github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
-github.com/go-task/slim-sprig v0.0.0-20191103011349-ba7d6a531428 h1:62JQa/NJVTX0I2G7GlVBbDl/8f6kmUQCoVf8R3fHvqE=
-github.com/go-task/slim-sprig v0.0.0-20191103011349-ba7d6a531428/go.mod h1:BU9jUCGL9r2yojTEkwli1J2X4GmnOJPAsUXFtPud7Mg=
+github.com/go-task/slim-sprig v0.0.0-20200516131648-f9bac4e523eb h1:/qbv1F67s6ehqX9mG23cJOeca3FWpOVKgtPfPUMAi0k=
+github.com/go-task/slim-sprig v0.0.0-20200516131648-f9bac4e523eb/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
+github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
+github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
+github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
@@ -16,42 +26,37 @@ github.com/mattn/go-isatty v0.0.8 h1:HLtExJ+uU2HOZ+wI0Tt5DtUDrx8yhUqDcp7fYERX4CE
 github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
 github.com/mattn/go-zglob v0.0.1 h1:xsEx/XUoVlI6yXjqBK062zYhRTZltCNmYPx6v+8DNaY=
 github.com/mattn/go-zglob v0.0.1/go.mod h1:9fxibJccNxU2cnpIKLRRFA7zX7qhkJIQWBb449FYHOo=
-github.com/pkg/diff v0.0.0-20190930165518-531926345625/go.mod h1:kFj35MyHn14a6pIgWhm46KVjJr5CHys3eEYxkuKD1EI=
+github.com/pkg/diff v0.0.0-20200914180035-5b29258ca4f7/go.mod h1:zO8QMzTeZd5cpnIkz/Gn6iK0jDfGicM1nynOkkPIl28=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/radovskyb/watcher v1.0.5 h1:wqt7gb+HjGacvFoLTKeT44C+XVPxu7bvHvKT1IvZ7rw=
 github.com/radovskyb/watcher v1.0.5/go.mod h1:78okwvY5wPdzcb1UYnip1pvrZNIVEIh/Cm+ZuvsUYIg=
-github.com/rogpeppe/go-internal v1.5.0/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
+github.com/rogpeppe/go-internal v1.6.2/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
 github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20191002192127-34f69633bfdc h1:c0o/qxkaO2LF5t6fQrT4b5hzyggAkLLlCUjqfRxd8Q4=
-golang.org/x/crypto v0.0.0-20191002192127-34f69633bfdc/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
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-mvdan.cc/editorconfig v0.1.1-0.20191109213504-890940e3f00e/go.mod h1:Ge4atmRUYqueGppvJ7JNrtqpqokoJEFxYbP0Z+WeKS8=
-mvdan.cc/sh/v3 v3.0.2 h1:NU+UpTZHRdIZ9igRo8zi/7+5/NpetYlhlyDhz1/AdMM=
-mvdan.cc/sh/v3 v3.0.2/go.mod h1:rBIndNJFYPp8xSppiZcGIk6B5d1g3OEARxEaXjPxwVI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+mvdan.cc/editorconfig v0.1.1-0.20200121172147-e40951bde157/go.mod h1:Ge4atmRUYqueGppvJ7JNrtqpqokoJEFxYbP0Z+WeKS8=
+mvdan.cc/sh/v3 v3.2.1 h1:uQBpiGM+rEuHse3Q+W7ajuJUeOtFVJUN/6GeX4/dUWE=
+mvdan.cc/sh/v3 v3.2.1/go.mod h1:fPQmabBpREM/XQ9YXSU5ZFZ/Sm+PmKP9/vkFHgYKJEI=

help.go

@@ -5,8 +5,8 @@ import (
 	"sort"
 	"text/tabwriter"
 
-	"github.com/go-task/task/v2/internal/logger"
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/taskfile"
 )
 
 // PrintTasksHelp prints help os tasks that have a description
@@ -21,7 +21,7 @@ func (e *Executor) PrintTasksHelp() {
 	// 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.Fprintf(w, "* %s: \t%s\n", task.Task, task.Desc)
+		fmt.Fprintf(w, "* %s: \t%s\n", task.Name(), task.Desc)
 	}
 	w.Flush()
 }

internal/args/args.go

@@ -1,47 +0,0 @@
-package args
-
-import (
-	"strings"
-
-	"github.com/go-task/task/v2/internal/taskfile"
-)
-
-// Parse parses command line argument: tasks and vars of each task
-func Parse(args ...string) ([]taskfile.Call, taskfile.Vars) {
-	var calls []taskfile.Call
-	var globals taskfile.Vars
-
-	for _, arg := range args {
-		if !strings.Contains(arg, "=") {
-			calls = append(calls, taskfile.Call{Task: arg})
-			continue
-		}
-
-		if len(calls) < 1 {
-			if globals == nil {
-				globals = taskfile.Vars{}
-			}
-
-			name, value := splitVar(arg)
-			globals[name] = taskfile.Var{Static: value}
-		} else {
-			if calls[len(calls)-1].Vars == nil {
-				calls[len(calls)-1].Vars = make(taskfile.Vars)
-			}
-
-			name, value := splitVar((arg))
-			calls[len(calls)-1].Vars[name] = taskfile.Var{Static: value}
-		}
-	}
-
-	if len(calls) == 0 {
-		calls = append(calls, taskfile.Call{Task: "default"})
-	}
-
-	return calls, globals
-}
-
-func splitVar(s string) (string, string) {
-	pair := strings.SplitN(s, "=", 2)
-	return pair[0], pair[1]
-}

internal/args/args_test.go

@@ -1,98 +0,0 @@
-package args_test
-
-import (
-	"fmt"
-	"testing"
-
-	"github.com/go-task/task/v2/internal/args"
-	"github.com/go-task/task/v2/internal/taskfile"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestArgs(t *testing.T) {
-	tests := []struct {
-		Args            []string
-		ExpectedCalls   []taskfile.Call
-		ExpectedGlobals taskfile.Vars
-	}{
-		{
-			Args: []string{"task-a", "task-b", "task-c"},
-			ExpectedCalls: []taskfile.Call{
-				{Task: "task-a"},
-				{Task: "task-b"},
-				{Task: "task-c"},
-			},
-		},
-		{
-			Args: []string{"task-a", "FOO=bar", "task-b", "task-c", "BAR=baz", "BAZ=foo"},
-			ExpectedCalls: []taskfile.Call{
-				{
-					Task: "task-a",
-					Vars: taskfile.Vars{
-						"FOO": taskfile.Var{Static: "bar"},
-					},
-				},
-				{Task: "task-b"},
-				{
-					Task: "task-c",
-					Vars: taskfile.Vars{
-						"BAR": taskfile.Var{Static: "baz"},
-						"BAZ": taskfile.Var{Static: "foo"},
-					},
-				},
-			},
-		},
-		{
-			Args: []string{"task-a", "CONTENT=with some spaces"},
-			ExpectedCalls: []taskfile.Call{
-				{
-					Task: "task-a",
-					Vars: taskfile.Vars{
-						"CONTENT": taskfile.Var{Static: "with some spaces"},
-					},
-				},
-			},
-		},
-		{
-			Args: []string{"FOO=bar", "task-a", "task-b"},
-			ExpectedCalls: []taskfile.Call{
-				{Task: "task-a"},
-				{Task: "task-b"},
-			},
-			ExpectedGlobals: taskfile.Vars{
-				"FOO": {Static: "bar"},
-			},
-		},
-		{
-			Args: nil,
-			ExpectedCalls: []taskfile.Call{
-				{Task: "default"},
-			},
-		},
-		{
-			Args: []string{},
-			ExpectedCalls: []taskfile.Call{
-				{Task: "default"},
-			},
-		},
-		{
-			Args: []string{"FOO=bar", "BAR=baz"},
-			ExpectedCalls: []taskfile.Call{
-				{Task: "default"},
-			},
-			ExpectedGlobals: taskfile.Vars{
-				"FOO": {Static: "bar"},
-				"BAR": {Static: "baz"},
-			},
-		},
-	}
-
-	for i, test := range tests {
-		t.Run(fmt.Sprintf("TestArgs%d", i+1), func(t *testing.T) {
-			calls, globals := args.Parse(test.Args...)
-			assert.Equal(t, test.ExpectedCalls, calls)
-			assert.Equal(t, test.ExpectedGlobals, globals)
-		})
-	}
-}

internal/compiler/compiler.go

@@ -1,12 +1,12 @@
 package compiler
 
 import (
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/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)
+	GetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error)
 	HandleDynamicVar(v taskfile.Var) (string, error)
 }

internal/compiler/env.go

@@ -4,21 +4,17 @@ import (
 	"os"
 	"strings"
 
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/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 {
+func GetEnviron() *taskfile.Vars {
+	m := &taskfile.Vars{}
+	for _, e := range os.Environ() {
 		keyVal := strings.SplitN(e, "=", 2)
 		key, val := keyVal[0], keyVal[1]
-		m[key] = taskfile.Var{Static: val}
+		m.Set(key, taskfile.Var{Static: val})
 	}
 	return m
 }

internal/compiler/v2/compiler_v2.go

@@ -7,11 +7,11 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/go-task/task/v2/internal/compiler"
-	"github.com/go-task/task/v2/internal/execext"
-	"github.com/go-task/task/v2/internal/logger"
-	"github.com/go-task/task/v2/internal/taskfile"
-	"github.com/go-task/task/v2/internal/templater"
+	"github.com/go-task/task/v3/internal/compiler"
+	"github.com/go-task/task/v3/internal/execext"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/internal/templater"
+	"github.com/go-task/task/v3/taskfile"
 )
 
 var _ compiler.Compiler = &CompilerV2{}
@@ -19,8 +19,8 @@ var _ compiler.Compiler = &CompilerV2{}
 type CompilerV2 struct {
 	Dir string
 
-	Taskvars     taskfile.Vars
-	TaskfileVars taskfile.Vars
+	Taskvars     *taskfile.Vars
+	TaskfileVars *taskfile.Vars
 
 	Expansions int
 
@@ -36,10 +36,10 @@ type CompilerV2 struct {
 // 3. Taskfile variables
 // 4. Taskvars file variables
 // 5. Environment variables
-func (c *CompilerV2) GetVariables(t *taskfile.Task, call taskfile.Call) (taskfile.Vars, error) {
+func (c *CompilerV2) GetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error) {
 	vr := varResolver{c: c, vars: compiler.GetEnviron()}
-	vr.vars["TASK"] = taskfile.Var{Static: t.Task}
-	for _, vars := range []taskfile.Vars{c.Taskvars, c.TaskfileVars, call.Vars, t.Vars} {
+	vr.vars.Set("TASK", taskfile.Var{Static: t.Task})
+	for _, vars := range []*taskfile.Vars{c.Taskvars, c.TaskfileVars, call.Vars, t.Vars} {
 		for i := 0; i < c.Expansions; i++ {
 			vr.merge(vars)
 		}
@@ -49,16 +49,16 @@ func (c *CompilerV2) GetVariables(t *taskfile.Task, call taskfile.Call) (taskfil
 
 type varResolver struct {
 	c    *CompilerV2
-	vars taskfile.Vars
+	vars *taskfile.Vars
 	err  error
 }
 
-func (vr *varResolver) merge(vars taskfile.Vars) {
+func (vr *varResolver) merge(vars *taskfile.Vars) {
 	if vr.err != nil {
 		return
 	}
 	tr := templater.Templater{Vars: vr.vars}
-	for k, v := range vars {
+	vars.Range(func(k string, v taskfile.Var) error {
 		v = taskfile.Var{
 			Static: tr.Replace(v.Static),
 			Sh:     tr.Replace(v.Sh),
@@ -66,10 +66,11 @@ func (vr *varResolver) merge(vars taskfile.Vars) {
 		static, err := vr.c.HandleDynamicVar(v)
 		if err != nil {
 			vr.err = err
-			return
+			return err
 		}
-		vr.vars[k] = taskfile.Var{Static: static}
-	}
+		vr.vars.Set(k, taskfile.Var{Static: static})
+		return nil
+	})
 	vr.err = tr.Err()
 }
 

internal/compiler/v3/compiler_v3.go

@@ -0,0 +1,98 @@
+package v3
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"strings"
+	"sync"
+
+	"github.com/go-task/task/v3/internal/compiler"
+	"github.com/go-task/task/v3/internal/execext"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/internal/templater"
+	"github.com/go-task/task/v3/taskfile"
+)
+
+var _ compiler.Compiler = &CompilerV3{}
+
+type CompilerV3 struct {
+	Dir string
+
+	TaskfileVars *taskfile.Vars
+
+	Logger *logger.Logger
+
+	dynamicCache   map[string]string
+	muDynamicCache sync.Mutex
+}
+
+func (c *CompilerV3) GetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error) {
+	result := compiler.GetEnviron()
+	result.Set("TASK", taskfile.Var{Static: t.Task})
+
+	rangeFunc := func(k string, v taskfile.Var) error {
+		tr := templater.Templater{Vars: result, RemoveNoValue: true}
+		v = taskfile.Var{
+			Static: tr.Replace(v.Static),
+			Sh:     tr.Replace(v.Sh),
+		}
+		if err := tr.Err(); err != nil {
+			return err
+		}
+		static, err := c.HandleDynamicVar(v)
+		if err != nil {
+			return err
+		}
+		result.Set(k, taskfile.Var{Static: static})
+		return nil
+	}
+
+	if err := c.TaskfileVars.Range(rangeFunc); err != nil {
+		return nil, err
+	}
+	if err := call.Vars.Range(rangeFunc); err != nil {
+		return nil, err
+	}
+	if err := t.Vars.Range(rangeFunc); err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}
+
+func (c *CompilerV3) 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(logger.Magenta, `task: dynamic variable: '%s' result: '%s'`, v.Sh, result)
+
+	return result, nil
+}

internal/execext/exec.go

@@ -46,16 +46,10 @@ func RunCommand(ctx context.Context, opts *RunCommandOptions) error {
 	}
 
 	r, err := interp.New(
+		interp.Params("-e"),
 		interp.Dir(opts.Dir),
 		interp.Env(expand.ListEnviron(environ...)),
-
-		interp.OpenHandler(func(ctx context.Context, path string, flag int, perm os.FileMode) (io.ReadWriteCloser, error) {
-			if path == "/dev/null" {
-				return devNull{}, nil
-			}
-			return interp.DefaultOpenHandler()(ctx, path, flag, perm)
-		}),
-
+		interp.OpenHandler(openHandler),
 		interp.StdIO(opts.Stdin, opts.Stdout, opts.Stderr),
 	)
 	if err != nil {
@@ -86,3 +80,10 @@ func Expand(s string) (string, error) {
 	}
 	return "", nil
 }
+
+func openHandler(ctx context.Context, path string, flag int, perm os.FileMode) (io.ReadWriteCloser, error) {
+	if path == "/dev/null" {
+		return devNull{}, nil
+	}
+	return interp.DefaultOpenHandler()(ctx, path, flag, perm)
+}

internal/output/output_test.go

@@ -6,7 +6,7 @@ import (
 	"io"
 	"testing"
 
-	"github.com/go-task/task/v2/internal/output"
+	"github.com/go-task/task/v3/internal/output"
 
 	"github.com/stretchr/testify/assert"
 )

internal/status/checksum.go

@@ -95,6 +95,9 @@ func (c *Checksum) Value() (interface{}, error) {
 
 // OnError implements the Checker interface
 func (c *Checksum) OnError() error {
+	if len(c.Sources) == 0 {
+		return nil
+	}
 	return os.Remove(c.checksumFilePath())
 }
 

internal/status/glob.go

@@ -5,7 +5,7 @@ import (
 	"path/filepath"
 	"sort"
 
-	"github.com/go-task/task/v2/internal/execext"
+	"github.com/go-task/task/v3/internal/execext"
 
 	"github.com/mattn/go-zglob"
 )

internal/summary/summary.go

@@ -3,8 +3,8 @@ package summary
 import (
 	"strings"
 
-	"github.com/go-task/task/v2/internal/logger"
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/taskfile"
 )
 
 func PrintTasks(l *logger.Logger, t *taskfile.Taskfile, c []taskfile.Call) {
@@ -56,7 +56,7 @@ func printTaskSummary(l *logger.Logger, t *taskfile.Task) {
 }
 
 func printTaskName(l *logger.Logger, t *taskfile.Task) {
-	l.Outf(logger.Default, "task: %s", t.Task)
+	l.Outf(logger.Default, "task: %s", t.Name())
 	l.Outf(logger.Default, "")
 }
 

internal/summary/summary_test.go

@@ -5,9 +5,9 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/go-task/task/v2/internal/logger"
-	"github.com/go-task/task/v2/internal/summary"
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/internal/summary"
+	"github.com/go-task/task/v3/taskfile"
 
 	"github.com/stretchr/testify/assert"
 )

internal/taskfile/included_taskfile.go

@@ -1,40 +0,0 @@
-package taskfile
-
-import "errors"
-
-var (
-	// ErrCantUnmarshalIncludedTaskfile is returned for invalid var YAML.
-	ErrCantUnmarshalIncludedTaskfile = errors.New("task: can't unmarshal included value")
-)
-
-// IncludedTaskfile represents information about included tasksfile
-type IncludedTaskfile struct {
-	Taskfile       string
-	Dir            string
-	AdvancedImport bool
-}
-
-// IncludedTaskfiles represents information about included tasksfiles
-type IncludedTaskfiles = map[string]IncludedTaskfile
-
-// UnmarshalYAML implements yaml.Unmarshaler interface
-func (it *IncludedTaskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
-	var str string
-	if err := unmarshal(&str); err == nil {
-		it.Taskfile = str
-		return nil
-	}
-
-	var includedTaskfile struct {
-		Taskfile string
-		Dir      string
-	}
-	if err := unmarshal(&includedTaskfile); err == nil {
-		it.Dir = includedTaskfile.Dir
-		it.Taskfile = includedTaskfile.Taskfile
-		it.AdvancedImport = true
-		return nil
-	}
-
-	return ErrCantUnmarshalIncludedTaskfile
-}

internal/taskfile/read/taskfile.go

@@ -1,91 +0,0 @@
-package read
-
-import (
-	"errors"
-	"fmt"
-	"os"
-	"path/filepath"
-	"runtime"
-
-	"github.com/go-task/task/v2/internal/taskfile"
-
-	"gopkg.in/yaml.v2"
-)
-
-var (
-	// ErrIncludedTaskfilesCantHaveIncludes is returned when a included Taskfile contains includes
-	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, entrypoint string) (*taskfile.Taskfile, error) {
-	path := filepath.Join(dir, entrypoint)
-	if _, err := os.Stat(path); err != nil {
-		return nil, fmt.Errorf(`task: No Taskfile found on "%s". Use "task --init" to create a new one`, path)
-	}
-	t, err := readTaskfile(path)
-	if err != nil {
-		return nil, err
-	}
-
-	for namespace, includedTask := range t.Includes {
-		if filepath.IsAbs(includedTask.Taskfile) {
-			path = includedTask.Taskfile
-		} else {
-			path = filepath.Join(dir, includedTask.Taskfile)
-		}
-
-		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 includedTask.AdvancedImport {
-			for _, task := range includedTaskfile.Tasks {
-				if !filepath.IsAbs(task.Dir) {
-					task.Dir = filepath.Join(includedTask.Dir, task.Dir)
-				}
-			}
-		}
-
-		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/var.go

@@ -1,64 +0,0 @@
-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
-
-// ToCacheMap converts Vars to a map containing only the static
-// variables
-func (vs Vars) ToCacheMap() (m map[string]interface{}) {
-	m = make(map[string]interface{}, 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
-		}
-
-		if v.Live != nil {
-			m[k] = v.Live
-		} else {
-			m[k] = v.Static
-		}
-	}
-	return
-}
-
-// Var represents either a static or dynamic variable.
-type Var struct {
-	Static string
-	Live   interface{}
-	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/templater/templater.go

@@ -2,9 +2,10 @@ package templater
 
 import (
 	"bytes"
+	"strings"
 	"text/template"
 
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/taskfile"
 )
 
 // Templater is a help struct that allow us to call "replaceX" funcs multiple
@@ -12,7 +13,8 @@ import (
 // happen will be assigned to r.err, and consecutive calls to funcs will just
 // return the zero value.
 type Templater struct {
-	Vars taskfile.Vars
+	Vars          *taskfile.Vars
+	RemoveNoValue bool
 
 	cacheMap map[string]interface{}
 	err      error
@@ -42,6 +44,9 @@ func (r *Templater) Replace(str string) string {
 		r.err = err
 		return ""
 	}
+	if r.RemoveNoValue {
+		return strings.ReplaceAll(b.String(), "<no value>", "")
+	}
 	return b.String()
 }
 
@@ -57,20 +62,22 @@ func (r *Templater) ReplaceSlice(strs []string) []string {
 	return new
 }
 
-func (r *Templater) ReplaceVars(vars taskfile.Vars) taskfile.Vars {
-	if r.err != nil || len(vars) == 0 {
+func (r *Templater) ReplaceVars(vars *taskfile.Vars) *taskfile.Vars {
+	if r.err != nil || vars == nil || len(vars.Keys) == 0 {
 		return nil
 	}
 
-	new := make(taskfile.Vars, len(vars))
-	for k, v := range vars {
-		new[k] = taskfile.Var{
+	var new taskfile.Vars
+	vars.Range(func(k string, v taskfile.Var) error {
+		new.Set(k, taskfile.Var{
 			Static: r.Replace(v.Static),
 			Live:   v.Live,
 			Sh:     r.Replace(v.Sh),
-		}
-	}
-	return new
+		})
+		return nil
+	})
+
+	return &new
 }
 
 func (r *Templater) Err() error {

precondition.go

@@ -4,9 +4,9 @@ import (
 	"context"
 	"errors"
 
-	"github.com/go-task/task/v2/internal/execext"
-	"github.com/go-task/task/v2/internal/logger"
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/internal/execext"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/taskfile"
 )
 
 var (

status.go

@@ -4,10 +4,10 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/go-task/task/v2/internal/execext"
-	"github.com/go-task/task/v2/internal/logger"
-	"github.com/go-task/task/v2/internal/status"
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/internal/execext"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/internal/status"
+	"github.com/go-task/task/v3/taskfile"
 )
 
 // Status returns an error if any the of given tasks is not up-to-date
@@ -22,7 +22,7 @@ func (e *Executor) Status(ctx context.Context, calls ...taskfile.Call) error {
 			return err
 		}
 		if !isUpToDate {
-			return fmt.Errorf(`task: Task "%s" is not up-to-date`, t.Task)
+			return fmt.Errorf(`task: Task "%s" is not up-to-date`, t.Name())
 		}
 	}
 	return nil
@@ -77,7 +77,7 @@ func (e *Executor) timestampChecker(t *taskfile.Task) status.Checker {
 func (e *Executor) checksumChecker(t *taskfile.Task) status.Checker {
 	return &status.Checksum{
 		Dir:       t.Dir,
-		Task:      t.Task,
+		Task:      t.Name(),
 		Sources:   t.Sources,
 		Generates: t.Generates,
 		Dry:       e.Dry,

task.go

@@ -6,18 +6,18 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"strconv"
 	"sync"
 	"sync/atomic"
 
-	"github.com/go-task/task/v2/internal/compiler"
-	compilerv2 "github.com/go-task/task/v2/internal/compiler/v2"
-	"github.com/go-task/task/v2/internal/execext"
-	"github.com/go-task/task/v2/internal/logger"
-	"github.com/go-task/task/v2/internal/output"
-	"github.com/go-task/task/v2/internal/summary"
-	"github.com/go-task/task/v2/internal/taskfile"
-	"github.com/go-task/task/v2/internal/taskfile/read"
+	"github.com/go-task/task/v3/internal/compiler"
+	compilerv2 "github.com/go-task/task/v3/internal/compiler/v2"
+	compilerv3 "github.com/go-task/task/v3/internal/compiler/v3"
+	"github.com/go-task/task/v3/internal/execext"
+	"github.com/go-task/task/v3/internal/logger"
+	"github.com/go-task/task/v3/internal/output"
+	"github.com/go-task/task/v3/internal/summary"
+	"github.com/go-task/task/v3/taskfile"
+	"github.com/go-task/task/v3/taskfile/read"
 
 	"golang.org/x/sync/errgroup"
 )
@@ -52,7 +52,7 @@ type Executor struct {
 	Output      output.Output
 	OutputStyle string
 
-	taskvars taskfile.Vars
+	taskvars *taskfile.Vars
 
 	taskCallCount map[string]*int32
 	mkdirMutexMap map[string]*sync.Mutex
@@ -110,11 +110,19 @@ func (e *Executor) Setup() error {
 	if err != nil {
 		return err
 	}
-	e.taskvars, err = read.Taskvars(e.Dir)
+
+	v, err := e.Taskfile.ParsedVersion()
 	if err != nil {
 		return err
 	}
 
+	if v < 3.0 {
+		e.taskvars, err = read.Taskvars(e.Dir)
+		if err != nil {
+			return err
+		}
+	}
+
 	if e.Stdin == nil {
 		e.Stdin = os.Stdin
 	}
@@ -131,11 +139,6 @@ func (e *Executor) Setup() error {
 		Color:   e.Color,
 	}
 
-	v, err := strconv.ParseFloat(e.Taskfile.Version, 64)
-	if err != nil {
-		return fmt.Errorf(`task: Could not parse taskfile version "%s": %v`, e.Taskfile.Version, err)
-	}
-
 	if v < 2 {
 		return fmt.Errorf(`task: Taskfile versions prior to v2 are not supported anymore`)
 	}
@@ -154,20 +157,31 @@ func (e *Executor) Setup() error {
 		e.Logger.Color = false
 	}
 
-	e.Compiler = &compilerv2.CompilerV2{
-		Dir:          e.Dir,
-		Taskvars:     e.taskvars,
-		TaskfileVars: e.Taskfile.Vars,
-		Expansions:   e.Taskfile.Expansions,
-		Logger:       e.Logger,
+	if v < 3 {
+		e.Compiler = &compilerv2.CompilerV2{
+			Dir:          e.Dir,
+			Taskvars:     e.taskvars,
+			TaskfileVars: e.Taskfile.Vars,
+			Expansions:   e.Taskfile.Expansions,
+			Logger:       e.Logger,
+		}
+	} else {
+		e.Compiler = &compilerv3.CompilerV3{
+			Dir:          e.Dir,
+			TaskfileVars: e.Taskfile.Vars,
+			Logger:       e.Logger,
+		}
 	}
 
 	if v < 2.1 && e.Taskfile.Output != "" {
 		return fmt.Errorf(`task: Taskfile option "output" is only available starting on Taskfile version v2.1`)
 	}
-	if v < 2.2 && len(e.Taskfile.Includes) > 0 {
+	if v < 2.2 && e.Taskfile.Includes.Len() > 0 {
 		return fmt.Errorf(`task: Including Taskfiles is only available starting on Taskfile version v2.2`)
 	}
+	if v >= 3.0 && e.Taskfile.Expansions > 2 {
+		return fmt.Errorf(`task: The "expansions" setting is not available anymore on v3.0`)
+	}
 
 	if e.OutputStyle != "" {
 		e.Taskfile.Output = e.OutputStyle
@@ -215,10 +229,14 @@ func (e *Executor) Setup() error {
 	}
 
 	if v < 3 {
-		for _, taskfile := range e.Taskfile.Includes {
+		err := e.Taskfile.Includes.Range(func(_ string, taskfile taskfile.IncludedTaskfile) error {
 			if taskfile.AdvancedImport {
 				return errors.New(`task: Import with additional parameters is only available starting on Taskfile version v3`)
 			}
+			return nil
+		})
+		if err != nil {
+			return err
 		}
 	}
 
@@ -258,7 +276,7 @@ func (e *Executor) RunTask(ctx context.Context, call taskfile.Call) error {
 
 		if upToDate && preCondMet {
 			if !e.Silent {
-				e.Logger.Errf(logger.Magenta, `task: Task "%s" is up to date`, t.Task)
+				e.Logger.Errf(logger.Magenta, `task: Task "%s" is up to date`, t.Name())
 			}
 			return nil
 		}

task_test.go

@@ -11,8 +11,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/go-task/task/v2"
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3"
+	"github.com/go-task/task/v3/taskfile"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -56,6 +56,16 @@ func (fct fileContentTest) Run(t *testing.T) {
 	}
 }
 
+func TestEmptyTask(t *testing.T) {
+	e := &task.Executor{
+		Dir:    "testdata/empty_task",
+		Stdout: ioutil.Discard,
+		Stderr: ioutil.Discard,
+	}
+	assert.NoError(t, e.Setup(), "e.Setup()")
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "default"}))
+}
+
 func TestEnv(t *testing.T) {
 	tt := fileContentTest{
 		Dir:       "testdata/env",
@@ -107,6 +117,20 @@ func TestVarsV2(t *testing.T) {
 	tt.Run(t)
 }
 
+func TestVarsV3(t *testing.T) {
+	tt := fileContentTest{
+		Dir:    "testdata/vars/v3",
+		Target: "default",
+		Files: map[string]string{
+			"missing-var.txt":  "\n",
+			"var-order.txt":    "ABCDEF\n",
+			"dependent-sh.txt": "123456\n",
+			"with-call.txt":    "Hi, ABC123!\n",
+		},
+	}
+	tt.Run(t)
+}
+
 func TestMultilineVars(t *testing.T) {
 	for _, dir := range []string{"testdata/vars/v2/multiline"} {
 		tt := fileContentTest{
@@ -370,6 +394,90 @@ func TestStatusChecksum(t *testing.T) {
 	assert.Equal(t, `task: Task "build" is up to date`+"\n", buff.String())
 }
 
+func TestLabelUpToDate(t *testing.T) {
+	const dir = "testdata/label_uptodate"
+
+	var buff bytes.Buffer
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: &buff,
+		Stderr: &buff,
+	}
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "foo"}))
+	assert.Contains(t, buff.String(), "foobar")
+}
+
+func TestLabelSummary(t *testing.T) {
+	const dir = "testdata/label_summary"
+
+	var buff bytes.Buffer
+	e := task.Executor{
+		Dir:     dir,
+		Summary: true,
+		Stdout:  &buff,
+		Stderr:  &buff,
+	}
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "foo"}))
+	assert.Contains(t, buff.String(), "foobar")
+}
+
+func TestLabelInStatus(t *testing.T) {
+	const dir = "testdata/label_status"
+
+	e := task.Executor{
+		Dir: dir,
+	}
+	assert.NoError(t, e.Setup())
+	err := e.Status(context.Background(), taskfile.Call{Task: "foo"})
+	if assert.Error(t, err) {
+		assert.Contains(t, err.Error(), "foobar")
+	}
+}
+
+func TestLabelWithVariableExpansion(t *testing.T) {
+	const dir = "testdata/label_var"
+
+	var buff bytes.Buffer
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: &buff,
+		Stderr: &buff,
+	}
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "foo"}))
+	assert.Contains(t, buff.String(), "foobaz")
+}
+
+func TestLabelInSummary(t *testing.T) {
+	const dir = "testdata/label_summary"
+
+	var buff bytes.Buffer
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: &buff,
+		Stderr: &buff,
+	}
+	assert.NoError(t, e.Setup())
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "foo"}))
+	assert.Contains(t, buff.String(), "foobar")
+}
+
+func TestLabelInList(t *testing.T) {
+	const dir = "testdata/label_list"
+
+	var buff bytes.Buffer
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: &buff,
+		Stderr: &buff,
+	}
+	assert.NoError(t, e.Setup())
+	e.PrintTasksHelp()
+	assert.Contains(t, buff.String(), "foobar")
+}
+
 func TestStatusVariables(t *testing.T) {
 	const dir = "testdata/status_vars"
 
@@ -546,6 +654,7 @@ func TestIncludes(t *testing.T) {
 			"included_taskfile_without_dir.txt":         "included_taskfile_without_dir",
 			"./module2/included_directory_with_dir.txt": "included_directory_with_dir",
 			"./module2/included_taskfile_with_dir.txt":  "included_taskfile_with_dir",
+			"os_include.txt":                            "os",
 		},
 	}
 	tt.Run(t)
@@ -717,3 +826,61 @@ func TestShortTaskNotation(t *testing.T) {
 	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "default"}))
 	assert.Equal(t, "string-slice-1\nstring-slice-2\nstring\n", buff.String())
 }
+
+func TestDotenvShouldIncludeAllEnvFiles(t *testing.T) {
+	tt := fileContentTest{
+		Dir:       "testdata/dotenv/default",
+		Target:    "default",
+		TrimSpace: false,
+		Files: map[string]string{
+			"include.txt": "INCLUDE1='from_include1' INCLUDE2='from_include2'\n",
+		},
+	}
+	tt.Run(t)
+}
+
+func TestDotenvShouldErrorWhenIncludingDependantDotenvs(t *testing.T) {
+	const dir = "testdata/dotenv/error_included_envs"
+	const entry = "Taskfile.yml"
+
+	var buff bytes.Buffer
+	e := task.Executor{
+		Dir:        dir,
+		Entrypoint: entry,
+		Summary:    true,
+		Stdout:     &buff,
+		Stderr:     &buff,
+	}
+
+	err := e.Setup()
+	assert.Error(t, err)
+	assert.Contains(t, err.Error(), "move the dotenv")
+}
+
+func TestDotenvShouldAllowMissingEnv(t *testing.T) {
+	tt := fileContentTest{
+		Dir:       "testdata/dotenv/missing_env",
+		Target:    "default",
+		TrimSpace: false,
+		Files: map[string]string{
+			"include.txt": "INCLUDE1='' INCLUDE2=''\n",
+		},
+	}
+	tt.Run(t)
+}
+
+func TestExitImmediately(t *testing.T) {
+	const dir = "testdata/exit_immediately"
+
+	var buff bytes.Buffer
+	e := task.Executor{
+		Dir:    dir,
+		Stdout: &buff,
+		Stderr: &buff,
+		Silent: true,
+	}
+	assert.NoError(t, e.Setup())
+
+	assert.Error(t, e.Run(context.Background(), taskfile.Call{Task: "default"}))
+	assert.Contains(t, buff.String(), `"this_should_fail": executable file not found in $PATH`)
+}

taskfile/call.go

@@ -3,5 +3,5 @@ package taskfile
 // Call is the parameters to a task call
 type Call struct {
 	Task string
-	Vars Vars
+	Vars *Vars
 }

taskfile/cmd.go

@@ -10,14 +10,14 @@ type Cmd struct {
 	Cmd         string
 	Silent      bool
 	Task        string
-	Vars        Vars
+	Vars        *Vars
 	IgnoreError bool
 }
 
 // Dep is a task dependency
 type Dep struct {
 	Task string
-	Vars Vars
+	Vars *Vars
 }
 
 var (
@@ -51,7 +51,7 @@ func (c *Cmd) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	}
 	var taskCall struct {
 		Task string
-		Vars Vars
+		Vars *Vars
 	}
 	if err := unmarshal(&taskCall); err == nil {
 		c.Task = taskCall.Task
@@ -70,7 +70,7 @@ func (d *Dep) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	}
 	var taskCall struct {
 		Task string
-		Vars Vars
+		Vars *Vars
 	}
 	if err := unmarshal(&taskCall); err == nil {
 		d.Task = taskCall.Task

taskfile/included_taskfile.go

@@ -0,0 +1,109 @@
+package taskfile
+
+import (
+	"errors"
+
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	// ErrCantUnmarshalIncludedTaskfile is returned for invalid var YAML.
+	ErrCantUnmarshalIncludedTaskfile = errors.New("task: can't unmarshal included value")
+)
+
+// IncludedTaskfile represents information about included tasksfile
+type IncludedTaskfile struct {
+	Taskfile       string
+	Dir            string
+	AdvancedImport bool
+}
+
+// IncludedTaskfiles represents information about included tasksfiles
+type IncludedTaskfiles struct {
+	Keys    []string
+	Mapping map[string]IncludedTaskfile
+}
+
+// UnmarshalYAML implements the yaml.Unmarshaler interface.
+func (tfs *IncludedTaskfiles) UnmarshalYAML(node *yaml.Node) error {
+	if node.Kind != yaml.MappingNode {
+		return errors.New("task: includes is not a map")
+	}
+
+	// NOTE(@andreynering): on this style of custom unmarsheling,
+	// even number contains the keys, while odd numbers contains
+	// the values.
+	for i := 0; i < len(node.Content); i += 2 {
+		keyNode := node.Content[i]
+		valueNode := node.Content[i+1]
+
+		var v IncludedTaskfile
+		if err := valueNode.Decode(&v); err != nil {
+			return err
+		}
+		tfs.Set(keyNode.Value, v)
+	}
+	return nil
+}
+
+// Len returns the length of the map
+func (tfs *IncludedTaskfiles) Len() int {
+	if tfs == nil {
+		return 0
+	}
+	return len(tfs.Keys)
+}
+
+// Merge merges the given IncludedTaskfiles into the caller one
+func (tfs *IncludedTaskfiles) Merge(other *IncludedTaskfiles) {
+	other.Range(func(key string, value IncludedTaskfile) error {
+		tfs.Set(key, value)
+		return nil
+	})
+}
+
+// Set sets a value to a given key
+func (tfs *IncludedTaskfiles) Set(key string, includedTaskfile IncludedTaskfile) {
+	if tfs.Mapping == nil {
+		tfs.Mapping = make(map[string]IncludedTaskfile, 1)
+	}
+	if !stringSliceContains(tfs.Keys, key) {
+		tfs.Keys = append(tfs.Keys, key)
+	}
+	tfs.Mapping[key] = includedTaskfile
+}
+
+// Range allows you to loop into the included taskfiles in its right order
+func (tfs *IncludedTaskfiles) Range(yield func(key string, includedTaskfile IncludedTaskfile) error) error {
+	if tfs == nil {
+		return nil
+	}
+	for _, k := range tfs.Keys {
+		if err := yield(k, tfs.Mapping[k]); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// UnmarshalYAML implements yaml.Unmarshaler interface
+func (it *IncludedTaskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var str string
+	if err := unmarshal(&str); err == nil {
+		it.Taskfile = str
+		return nil
+	}
+
+	var includedTaskfile struct {
+		Taskfile string
+		Dir      string
+	}
+	if err := unmarshal(&includedTaskfile); err == nil {
+		it.Dir = includedTaskfile.Dir
+		it.Taskfile = includedTaskfile.Taskfile
+		it.AdvancedImport = true
+		return nil
+	}
+
+	return ErrCantUnmarshalIncludedTaskfile
+}

taskfile/merge.go

@@ -22,25 +22,18 @@ func Merge(t1, t2 *Taskfile, namespaces ...string) error {
 	}
 
 	if t1.Includes == nil {
-		t1.Includes = make(IncludedTaskfiles)
-	}
-	for k, v := range t2.Includes {
-		t1.Includes[k] = v
+		t1.Includes = &IncludedTaskfiles{}
 	}
+	t1.Includes.Merge(t2.Includes)
 
 	if t1.Vars == nil {
-		t1.Vars = make(Vars)
+		t1.Vars = &Vars{}
 	}
-	for k, v := range t2.Vars {
-		t1.Vars[k] = v
-	}
-
 	if t1.Env == nil {
-		t1.Env = make(Vars)
-	}
-	for k, v := range t2.Env {
-		t1.Env[k] = v
+		t1.Env = &Vars{}
 	}
+	t1.Vars.Merge(t2.Vars)
+	t1.Env.Merge(t2.Env)
 
 	if t1.Tasks == nil {
 		t1.Tasks = make(Tasks)

taskfile/precondition_test.go

@@ -3,10 +3,10 @@ package taskfile_test
 import (
 	"testing"
 
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/taskfile"
 
 	"github.com/stretchr/testify/assert"
-	"gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v3"
 )
 
 func TestPreconditionParse(t *testing.T) {

taskfile/read/taskfile.go

@@ -0,0 +1,147 @@
+package read
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"github.com/go-task/task/v3/internal/templater"
+	"github.com/go-task/task/v3/taskfile"
+
+	"github.com/joho/godotenv"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	// ErrIncludedTaskfilesCantHaveIncludes is returned when a included Taskfile contains includes
+	ErrIncludedTaskfilesCantHaveIncludes = errors.New("task: Included Taskfiles can't have includes. Please, move the include to the main Taskfile")
+	// ErrIncludedTaskfilesCantHaveDotenvs is returned when a included Taskfile contains dotenvs
+	ErrIncludedTaskfilesCantHaveDotenvs = errors.New("task: Included Taskfiles can't have dotenv declarations. Please, move the dotenv declaration to the main Taskfile")
+)
+
+// Taskfile reads a Taskfile for a given directory
+func Taskfile(dir string, entrypoint string) (*taskfile.Taskfile, error) {
+	path := filepath.Join(dir, entrypoint)
+	if _, err := os.Stat(path); err != nil {
+		return nil, fmt.Errorf(`task: No Taskfile found on "%s". Use "task --init" to create a new one`, path)
+	}
+	t, err := readTaskfile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	v, err := t.ParsedVersion()
+	if err != nil {
+		return nil, err
+	}
+
+	if v >= 3.0 {
+		for _, dotEnvPath := range t.Dotenv {
+			if !filepath.IsAbs(dotEnvPath) {
+				dotEnvPath = filepath.Join(dir, dotEnvPath)
+			}
+			if _, err := os.Stat(dotEnvPath); os.IsNotExist(err) {
+				continue
+			}
+
+			envs, err := godotenv.Read(dotEnvPath)
+			if err != nil {
+				return nil, err
+			}
+			for key, value := range envs {
+				if _, ok := t.Env.Mapping[key]; !ok {
+					t.Env.Set(key, taskfile.Var{Static: value})
+				}
+			}
+		}
+	}
+
+	err = t.Includes.Range(func(namespace string, includedTask taskfile.IncludedTaskfile) error {
+		if v >= 3.0 {
+			tr := templater.Templater{Vars: &taskfile.Vars{}, RemoveNoValue: true}
+			includedTask = taskfile.IncludedTaskfile{
+				Taskfile:       tr.Replace(includedTask.Taskfile),
+				Dir:            tr.Replace(includedTask.Dir),
+				AdvancedImport: includedTask.AdvancedImport,
+			}
+			if err := tr.Err(); err != nil {
+				return err
+			}
+		}
+
+		if filepath.IsAbs(includedTask.Taskfile) {
+			path = includedTask.Taskfile
+		} else {
+			path = filepath.Join(dir, includedTask.Taskfile)
+		}
+
+		info, err := os.Stat(path)
+		if err != nil {
+			return err
+		}
+		if info.IsDir() {
+			path = filepath.Join(path, "Taskfile.yml")
+		}
+		includedTaskfile, err := readTaskfile(path)
+		if err != nil {
+			return err
+		}
+		if includedTaskfile.Includes.Len() > 0 {
+			return ErrIncludedTaskfilesCantHaveIncludes
+		}
+
+		if v >= 3.0 && len(includedTaskfile.Dotenv) > 0 {
+			return ErrIncludedTaskfilesCantHaveDotenvs
+		}
+
+		if includedTask.AdvancedImport {
+			for _, task := range includedTaskfile.Tasks {
+				if !filepath.IsAbs(task.Dir) {
+					task.Dir = filepath.Join(includedTask.Dir, task.Dir)
+				}
+			}
+		}
+
+		if err = taskfile.Merge(t, includedTaskfile, namespace); err != nil {
+			return err
+		}
+		return nil
+	})
+	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
+			}
+		}
+	}
+
+	for name, task := range t.Tasks {
+		if task == nil {
+			task = &taskfile.Task{}
+			t.Tasks[name] = task
+		}
+		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)
+}

taskfile/read/taskvars.go

@@ -6,14 +6,14 @@ import (
 	"path/filepath"
 	"runtime"
 
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/taskfile"
 
-	"gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v3"
 )
 
 // Taskvars reads a Taskvars for a given directory
-func Taskvars(dir string) (taskfile.Vars, error) {
-	vars := make(taskfile.Vars)
+func Taskvars(dir string) (*taskfile.Vars, error) {
+	vars := &taskfile.Vars{}
 
 	path := filepath.Join(dir, "Taskvars.yml")
 	if _, err := os.Stat(path); err == nil {
@@ -29,24 +29,17 @@ func Taskvars(dir string) (taskfile.Vars, error) {
 		if err != nil {
 			return nil, err
 		}
-
-		if vars == nil {
-			vars = osVars
-		} else {
-			for k, v := range osVars {
-				vars[k] = v
-			}
-		}
+		vars.Merge(osVars)
 	}
 
 	return vars, nil
 }
 
-func readTaskvars(file string) (taskfile.Vars, error) {
+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)
+	return &vars, yaml.NewDecoder(f).Decode(&vars)
 }

taskfile/slice.go

@@ -0,0 +1,10 @@
+package taskfile
+
+func stringSliceContains(s []string, str string) bool {
+	for _, v := range s {
+		if v == str {
+			return true
+		}
+	}
+	return false
+}

taskfile/task.go

@@ -12,6 +12,7 @@ type Task struct {
 	Task          string
 	Cmds          []*Cmd
 	Deps          []*Dep
+	Label         string
 	Desc          string
 	Summary       string
 	Sources       []string
@@ -19,8 +20,8 @@ type Task struct {
 	Status        []string
 	Preconditions []*Precondition
 	Dir           string
-	Vars          Vars
-	Env           Vars
+	Vars          *Vars
+	Env           *Vars
 	Silent        bool
 	Method        string
 	Prefix        string
@@ -32,6 +33,13 @@ var (
 	ErrCantUnmarshalTask = errors.New("task: can't unmarshal task value")
 )
 
+func (t *Task) Name() string {
+	if t.Label != "" {
+		return t.Label
+	}
+	return t.Task
+}
+
 func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	var cmd Cmd
 	if err := unmarshal(&cmd); err == nil && cmd.Cmd != "" {
@@ -48,6 +56,7 @@ func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	var task struct {
 		Cmds          []*Cmd
 		Deps          []*Dep
+		Label         string
 		Desc          string
 		Summary       string
 		Sources       []string
@@ -55,8 +64,8 @@ func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		Status        []string
 		Preconditions []*Precondition
 		Dir           string
-		Vars          Vars
-		Env           Vars
+		Vars          *Vars
+		Env           *Vars
 		Silent        bool
 		Method        string
 		Prefix        string
@@ -65,6 +74,7 @@ func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	if err := unmarshal(&task); err == nil {
 		t.Cmds = task.Cmds
 		t.Deps = task.Deps
+		t.Label = task.Label
 		t.Desc = task.Desc
 		t.Summary = task.Summary
 		t.Sources = task.Sources

taskfile/taskfile.go

@@ -1,16 +1,22 @@
 package taskfile
 
+import (
+	"fmt"
+	"strconv"
+)
+
 // Taskfile represents a Taskfile.yml
 type Taskfile struct {
 	Version    string
 	Expansions int
 	Output     string
 	Method     string
-	Includes   IncludedTaskfiles
-	Vars       Vars
-	Env        Vars
+	Includes   *IncludedTaskfiles
+	Vars       *Vars
+	Env        *Vars
 	Tasks      Tasks
 	Silent     bool
+	Dotenv     []string
 }
 
 // UnmarshalYAML implements yaml.Unmarshaler interface
@@ -20,11 +26,12 @@ func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		Expansions int
 		Output     string
 		Method     string
-		Includes   IncludedTaskfiles
-		Vars       Vars
-		Env        Vars
+		Includes   *IncludedTaskfiles
+		Vars       *Vars
+		Env        *Vars
 		Tasks      Tasks
 		Silent     bool
+		Dotenv     []string
 	}
 	if err := unmarshal(&taskfile); err != nil {
 		return err
@@ -38,11 +45,24 @@ func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	tf.Env = taskfile.Env
 	tf.Tasks = taskfile.Tasks
 	tf.Silent = taskfile.Silent
+	tf.Dotenv = taskfile.Dotenv
 	if tf.Expansions <= 0 {
 		tf.Expansions = 2
 	}
 	if tf.Vars == nil {
-		tf.Vars = make(Vars)
+		tf.Vars = &Vars{}
+	}
+	if tf.Env == nil {
+		tf.Env = &Vars{}
 	}
 	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
+}

taskfile/taskfile_test.go

@@ -3,10 +3,10 @@ package taskfile_test
 import (
 	"testing"
 
-	"github.com/go-task/task/v2/internal/taskfile"
+	"github.com/go-task/task/v3/taskfile"
 
 	"github.com/stretchr/testify/assert"
-	"gopkg.in/yaml.v2"
+	"gopkg.in/yaml.v3"
 )
 
 func TestCmdParse(t *testing.T) {
@@ -33,9 +33,12 @@ vars:
 		{
 			yamlTaskCall,
 			&taskfile.Cmd{},
-			&taskfile.Cmd{Task: "another-task", Vars: taskfile.Vars{
-				"PARAM1": taskfile.Var{Static: "VALUE1"},
-				"PARAM2": taskfile.Var{Static: "VALUE2"},
+			&taskfile.Cmd{Task: "another-task", Vars: &taskfile.Vars{
+				Keys: []string{"PARAM1", "PARAM2"},
+				Mapping: map[string]taskfile.Var{
+					"PARAM1": taskfile.Var{Static: "VALUE1"},
+					"PARAM2": taskfile.Var{Static: "VALUE2"},
+				},
 			}},
 		},
 		{
@@ -46,9 +49,12 @@ vars:
 		{
 			yamlTaskCall,
 			&taskfile.Dep{},
-			&taskfile.Dep{Task: "another-task", Vars: taskfile.Vars{
-				"PARAM1": taskfile.Var{Static: "VALUE1"},
-				"PARAM2": taskfile.Var{Static: "VALUE2"},
+			&taskfile.Dep{Task: "another-task", Vars: &taskfile.Vars{
+				Keys: []string{"PARAM1", "PARAM2"},
+				Mapping: map[string]taskfile.Var{
+					"PARAM1": taskfile.Var{Static: "VALUE1"},
+					"PARAM2": taskfile.Var{Static: "VALUE2"},
+				},
 			}},
 		},
 	}

taskfile/var.go

@@ -0,0 +1,124 @@
+package taskfile
+
+import (
+	"errors"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+)
+
+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 struct {
+	Keys    []string
+	Mapping map[string]Var
+}
+
+// UnmarshalYAML implements the yaml.Unmarshaler interface.
+func (vs *Vars) UnmarshalYAML(node *yaml.Node) error {
+	if node.Kind != yaml.MappingNode {
+		return errors.New("task: vars is not a map")
+	}
+
+	// NOTE(@andreynering): on this style of custom unmarsheling,
+	// even number contains the keys, while odd numbers contains
+	// the values.
+	for i := 0; i < len(node.Content); i += 2 {
+		keyNode := node.Content[i]
+		valueNode := node.Content[i+1]
+
+		var v Var
+		if err := valueNode.Decode(&v); err != nil {
+			return err
+		}
+		vs.Set(keyNode.Value, v)
+	}
+	return nil
+}
+
+// Merge merges the given Vars into the caller one
+func (vs *Vars) Merge(other *Vars) {
+	other.Range(func(key string, value Var) error {
+		vs.Set(key, value)
+		return nil
+	})
+}
+
+// Set sets a value to a given key
+func (vs *Vars) Set(key string, value Var) {
+	if vs.Mapping == nil {
+		vs.Mapping = make(map[string]Var, 1)
+	}
+	if !stringSliceContains(vs.Keys, key) {
+		vs.Keys = append(vs.Keys, key)
+	}
+	vs.Mapping[key] = value
+}
+
+// Range allows you to loop into the vars in its right order
+func (vs *Vars) Range(yield func(key string, value Var) error) error {
+	if vs == nil {
+		return nil
+	}
+	for _, k := range vs.Keys {
+		if err := yield(k, vs.Mapping[k]); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// ToCacheMap converts Vars to a map containing only the static
+// variables
+func (vs *Vars) ToCacheMap() (m map[string]interface{}) {
+	m = make(map[string]interface{}, len(vs.Keys))
+	vs.Range(func(k string, v Var) error {
+		if v.Sh != "" {
+			// Dynamic variable is not yet resolved; trigger
+			// <no value> to be used in templates.
+			return nil
+		}
+
+		if v.Live != nil {
+			m[k] = v.Live
+		} else {
+			m[k] = v.Static
+		}
+		return nil
+	})
+	return
+}
+
+// Var represents either a static or dynamic variable.
+type Var struct {
+	Static string
+	Live   interface{}
+	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
+}

testdata/checksum/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   build:

testdata/cyclic/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   task-1:

testdata/deps/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   default:

testdata/dir/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   whereami:

testdata/dir/explicit_doesnt_exist/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   whereami:

testdata/dir/explicit_exists/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   whereami:

testdata/dotenv/.gitignore

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

testdata/dotenv/default/Taskfile.yml

@@ -0,0 +1,8 @@
+version: '3'
+
+dotenv: ['../include1/.env', '../include1/envs/.env']
+
+tasks:
+  default:
+    cmds:
+      - echo "INCLUDE1='$INCLUDE1' INCLUDE2='$INCLUDE2'" > include.txt

testdata/dotenv/error_included_envs/Taskfile.yml

@@ -0,0 +1,9 @@
+version: '3'
+
+includes:
+  include1: '../include1'
+
+tasks:
+  default:
+    cmds:
+      - echo "INCLUDE1='$INCLUDE1' INCLUDE2='$INCLUDE2'" > include-errors2.txt

testdata/dotenv/include1/.env

@@ -0,0 +1 @@
+INCLUDE1=from_include1

testdata/dotenv/include1/Taskfile.yml

@@ -0,0 +1,3 @@
+version: '3'
+
+dotenv: ['.env']

testdata/dotenv/include1/envs/.env

@@ -0,0 +1 @@
+INCLUDE2=from_include2

testdata/dotenv/missing_env/Taskfile.yml

@@ -0,0 +1,8 @@
+version: '3'
+
+dotenv: ['.env']
+
+tasks:
+  default:
+    cmds:
+      - echo "INCLUDE1='$INCLUDE1' INCLUDE2='$INCLUDE2'" > include.txt

testdata/dry/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   build:

testdata/dry_checksum/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   default:

testdata/empty_task/Taskfile.yml

@@ -0,0 +1,4 @@
+version: '3'
+
+tasks:
+  default:

testdata/env/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 vars:
   BAZ:

testdata/exit_immediately/Taskfile.yml

@@ -0,0 +1,6 @@
+version: '3'
+
+tasks:
+  default: |
+    this_should_fail
+    echo "This shoudn't be print"

testdata/expand/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   pwd:

testdata/generates/Taskfile.yml

@@ -1,4 +1,7 @@
-version: '2'
+version: '3'
+
+vars:
+  BUILD_DIR: $pwd
 
 tasks:
   abs.txt:

testdata/generates/Taskvars.yml

@@ -1 +0,0 @@
-BUILD_DIR: $pwd

testdata/ignore_errors/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   task-should-pass:

testdata/includes/Taskfile.yml

@@ -13,6 +13,7 @@ includes:
   included_taskfile_with_dir:
     taskfile:  ./module2/Taskfile.yml
     dir:  ./module2
+  included_os: ./Taskfile_{{OS}}.yml
 
 tasks:
   default:
@@ -24,6 +25,7 @@ tasks:
       - task: included_taskfile_without_dir:gen_dir
       - task: included_with_dir:gen_file
       - task: included_taskfile_with_dir:gen_dir
+      - task: included_os:gen
 
   gen:
     cmds:

testdata/includes/Taskfile_darwin.yml

@@ -0,0 +1,4 @@
+version: '3'
+
+tasks:
+  gen: echo 'os' > os_include.txt

testdata/includes/Taskfile_linux.yml

@@ -0,0 +1,4 @@
+version: '3'
+
+tasks:
+  gen: echo 'os' > os_include.txt

testdata/includes/Taskfile_windows.yml

@@ -0,0 +1,4 @@
+version: '3'
+
+tasks:
+  gen: echo 'os' > os_include.txt

testdata/includes_call_root_task/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 includes:
   included: Taskfile2.yml

testdata/includes_call_root_task/Taskfile2.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   call-root:

testdata/includes_deps/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 includes:
   included: Taskfile2.yml

testdata/includes_deps/Taskfile2.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   default:

testdata/includes_empty/Taskfile.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 includes:
   included: Taskfile2.yml

testdata/includes_empty/Taskfile2.yml

@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 vars:
   FILE: file.txt

testdata/label_list/Taskfile.yml

@@ -0,0 +1,6 @@
+version: '3'
+
+tasks:
+  foo:
+    label: "foobar"
+    desc: "task description"

testdata/label_status/Taskfile.yml

@@ -0,0 +1,7 @@
+version: '3'
+
+tasks:
+  foo:
+    label: "foobar"
+    status:
+      - "false"