v3.7.1

Fixes #555

.github/FUNDING.yml

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

.github/workflows/release.yml

@@ -15,10 +15,10 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: 1.15.x
+          go-version: 1.17.x
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v1
+        uses: goreleaser/goreleaser-action@v2
         with:
           version: latest
           args: release --rm-dist

.github/workflows/test.yml

@@ -5,7 +5,7 @@ jobs:
     name: Test
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x]
+        go-version: [1.16.x, 1.17.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{matrix.platform}}
     steps:

.goreleaser.yml

@@ -1,6 +1,6 @@
 build:
   binary: task
-  main: cmd/task
+  main: ./cmd/task
   goos:
     - windows
     - darwin
@@ -50,3 +50,17 @@ nfpms:
       - deb
       - rpm
     file_name_template: "{{.ProjectName}}_{{.Os}}_{{.Arch}}"
+
+brews:
+  - name: go-task
+    description: Task runner / simpler Make alternative written in Go
+    license: MIT
+    homepage: https://taskfile.dev
+    folder: Formula
+    tap:
+      owner: go-task
+      name: homebrew-tap
+    test:
+      system "#{bin}/task", "--help"
+    url_template: https://github.com/go-task/task/releases/download/{{.Tag}}/{{.ArtifactName}}
+    commit_msg_template: Bump {{.Tag}}

CHANGELOG.md

@@ -1,5 +1,31 @@
 # Changelog
 
+## 3.7.1 - 2021-09-04
+
+- Add official support to Apple M1 ([#564](https://github.com/go-task/task/pull/564), [#567](https://github.com/go-task/task/pull/567)).
+- Our [official Homebrew tap](https://github.com/go-task/homebrew-tap) will
+  support more platforms, including Apple M1
+
+## v3.7.0 - 2021-07-31
+
+- Add `run:` setting to control if tasks should run multiple times or not.
+  Available options are `always` (the default), `when_changed` (if a variable
+  modified the task) and `once` (run only once no matter what).
+  This is a long time requested feature. Enjoy!
+  ([#53](https://github.com/go-task/task/issues/53), [#359](https://github.com/go-task/task/pull/359)).
+
+## v3.6.0 - 2021-07-10
+
+- Allow using both `sources:` and `status:` in the same task
+  ([#411](https://github.com/go-task/task/issues/411), [#427](https://github.com/go-task/task/issues/427), [#477](https://github.com/go-task/task/pull/477)).
+- Small optimization and bug fix: don't compute variables if not needed for
+  `dotenv:` ([#517](https://github.com/go-task/task/issues/517)).
+
+## v3.5.0 - 2021-07-04
+
+- Add support for interpolation in `dotenv:`
+  ([#433](https://github.com/go-task/task/discussions/433), [#434](https://github.com/go-task/task/issues/434), [#453](https://github.com/go-task/task/pull/453)).
+
 ## v3.4.3 - 2021-05-30
 
 - Add support for the `NO_COLOR` environment variable.

completion/bash/task.bash

@@ -15,7 +15,7 @@ _task_completion()
     return
   fi
 
-  COMPREPLY=($(compgen -c | echo "$scripts" | grep $curr_arg));
+  COMPREPLY=($(compgen -c | echo "$scripts" | grep -- $curr_arg));
 }
 
 complete -F _task_completion task

completion/fish/task.fish

@@ -1,5 +1,5 @@
 function __task_get_tasks --description "Prints all available tasks with their description"
-	task -l | sed '1d' | awk '{ $1=""; print $0 }' | tr ': ', '\t' | string trim
+	task -l | sed '1d' | awk '{ $1=""; print $0 }' | sed 's/:\ /\t/g' | 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 

docs/community.md

@@ -23,6 +23,12 @@ Additionally, there's also some work done by
 extension, which has its code [here](https://github.com/paulvarache/vscode-taskfile)
 and is published [here](https://marketplace.visualstudio.com/items?itemName=paulvarache.vscode-taskfile).
 
+### Sublime Text 4 package
+
+There is a convenience wrapper for initializing and running tasks from Sublime Text's command palette. The package is 
+developed by [@biozz](https://github.com/biozz), the source code is available [here](https://github.com/biozz/sublime-taskfile)
+and it is published on Package Control [here](https://packagecontrol.io/packages/Taskfile).
+
 ## Installation methods
 
 Some installation methods are maintained by third party:

docs/donate.md

@@ -14,22 +14,14 @@ 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)
+- [$50 per month](https://opencollective.com/task/contribute/sponsor-28775/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)
+- [Any value - One-time donation](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=GSVDU63RKG45A&currency_code=USD&source=url)
+
+## PIX (Brazil only)
+
+If you're Brazilian, you can donate any value by
+<a href="/pix.png" target="_blank">using this QR Code</a>.

docs/index.html

@@ -6,7 +6,7 @@
     <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="https://cdn.jsdelivr.net/npm/docsify-themeable@0/dist/css/theme-simple-dark.css">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsify-themeable@0/dist/css/theme-simple.css">
     <meta name="google-site-verification" content="VGAYkbdmuaciIDGkBe-eAg9yfZg0C6ostgonbGxxOa0" />
     <style>
       #logo {
@@ -43,6 +43,7 @@
     <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/docsify/lib/plugins/search.min.js"></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>

docs/usage.md

@@ -78,18 +78,25 @@ setting:
 KEYNAME=VALUE
 ```
 
+```
+# testing/.env
+ENDPOINT=testing.com
+```
 
 ```yaml
 # Taskfile.yml
 
 version: '3'
 
-dotenv: ['.env']
+env:
+  ENV: testing
+
+dotenv: ['.env', '{{.ENV}}/.env.', '{{.HOME}}/.env']
 
 tasks:
   greet:
     cmds:
-      - echo "Using $KEYNAME"
+      - echo "Using $KEYNAME and endpoint $ENDPOINT"
 ```
 
 ## Including other Taskfiles
@@ -446,6 +453,47 @@ tasks:
       - echo "I will not run"
 ```
 
+### Limiting when tasks run
+
+If a task executed by multiple `cmds` or multiple `deps` you can control
+when it is executed using `run`. `run` can also be set at the root
+of the Taskfile to change the behavior of all the tasks unless explicitly
+overridden.
+
+Supported values for `run`:
+
+ * `always` (default) always attempt to invoke the task regardless of the
+  number of previous executions
+ * `once` only invoke this task once regardless of the number of references
+ * `when_changed` only invokes the task once for each unique set of variables
+  passed into the task
+
+```yaml
+version: '3'
+
+tasks:
+  default:
+    cmds:
+      - task: generate-file
+        vars: { CONTENT: '1' }
+      - task: generate-file
+        vars: { CONTENT: '2' }
+      - task: generate-file
+        vars: { CONTENT: '2' }
+
+  generate-file:
+    run: when_changed
+    deps:
+      - install-deps
+    cmds:
+      - echo {{.CONTENT}}
+
+  install-deps:
+    run: once
+    cmds:
+      - sleep 5 # long operation like installing packages
+```
+
 ## Variables
 
 When doing interpolation of variables, Task will look for the below.
@@ -569,7 +617,7 @@ Task also adds the following functions:
 - `toSlash`: Does nothing on Unix, but on Windows converts a string from `\`
   path format to `/`.
 - `fromSlash`: Opposite of `toSlash`. Does nothing on Unix, but on Windows
-  converts a string from `\` path format to `/`.
+  converts a string from `/` path format to `\`.
 - `exeExt`: Returns the right executable extension for the current OS
   (`".exe"` for Windows, `""` for others).
 

go.mod

@@ -5,12 +5,13 @@ require (
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0
 	github.com/joho/godotenv v1.3.0
 	github.com/mattn/go-zglob v0.0.3
+	github.com/mitchellh/hashstructure/v2 v2.0.2
 	github.com/radovskyb/watcher v1.0.7
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.7.0
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c
-	mvdan.cc/sh/v3 v3.3.0
+	mvdan.cc/sh/v3 v3.3.1
 )
 
-go 1.13
+go 1.16

go.sum

@@ -1,6 +1,6 @@
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
-github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/creack/pty v1.1.13 h1:rTPnd/xocYRjutMfqide2zle1u96upp1gm6eUHKi7us=
+github.com/creack/pty v1.1.13/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
 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=
@@ -11,7 +11,7 @@ github.com/fatih/color v1.12.0 h1:mRhaKNwANqRgUBGKmnI5ZxEk7QXmjQeCcuYFMX2bfcc=
 github.com/fatih/color v1.12.0/go.mod h1:ELkj/draVOlAH/xkhN6mQ50Qd0MPOk5AAr3maGEBuJM=
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 h1:p104kn46Q8WdvHunIJ9dAyjPVtrBPhSr3KT2yUst43I=
 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
-github.com/google/renameio v1.0.1-0.20210406141108-81588dbe0453/go.mod h1:t/HQoYBZSsWSNK35C6CO/TpPLDVWvxOHboWUAweKUpk=
+github.com/google/renameio v1.0.1/go.mod h1:t/HQoYBZSsWSNK35C6CO/TpPLDVWvxOHboWUAweKUpk=
 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/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
@@ -27,12 +27,14 @@ github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHX
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/mattn/go-zglob v0.0.3 h1:6Ry4EYsScDyt5di4OI6xw1bYhOqfE5S33Z1OPy+d+To=
 github.com/mattn/go-zglob v0.0.3/go.mod h1:9fxibJccNxU2cnpIKLRRFA7zX7qhkJIQWBb449FYHOo=
+github.com/mitchellh/hashstructure/v2 v2.0.2 h1:vGKWl0YJqUNxE8d+h8f6NJLcCJrgbhC4NcD46KavDd4=
+github.com/mitchellh/hashstructure/v2 v2.0.2/go.mod h1:MG3aRVU/N29oo/V/IhBX8GR/zz4kQkprJgF2EVszyDE=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 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 v1.0.7 h1:AYePLih6dpmS32vlHfhCeli8127LzkIgwJGcwwe8tUE=
 github.com/radovskyb/watcher v1.0.7/go.mod h1:78okwvY5wPdzcb1UYnip1pvrZNIVEIh/Cm+ZuvsUYIg=
-github.com/rogpeppe/go-internal v1.7.0/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
+github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -43,11 +45,11 @@ golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cO
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210503080704-8803ae5d1324 h1:pAwJxDByZctfPwzlNGrDN2BQLsdPb9NkhoTJtUkAO28=
-golang.org/x/sys v0.0.0-20210503080704-8803ae5d1324/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/term v0.0.0-20210503060354-a79de5458b56 h1:b8jxX3zqjpqb2LklXPzKSGJhzyxCOZSz8ncv8Nv+y7w=
-golang.org/x/term v0.0.0-20210503060354-a79de5458b56/go.mod h1:tfny5GFUkzUvx4ps4ajbZsCe5lw1metzhBm9T3x7oIY=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b h1:9zKuko04nR4gjZ4+DNjHqRlAJqbJETHwiNKDqTfOjfE=
+golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -56,5 +58,5 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 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 v0.2.0/go.mod h1:lvnnD3BNdBYkhq+B4uBuFFKatfp02eB6HixDvEz91C0=
-mvdan.cc/sh/v3 v3.3.0 h1:ujzElMnry63f4I5sjPFxzo6xia+gwsHZM0yyauuyZ6k=
-mvdan.cc/sh/v3 v3.3.0/go.mod h1:dh3avhLDhJJ/MJKzbak6FYn+DJKUWk7Fb6Dh5mGdv6Y=
+mvdan.cc/sh/v3 v3.3.1 h1:aA0i7NZOc1oV5jfAH20FCz+QsmI/TX7FiAquC5Rdo5o=
+mvdan.cc/sh/v3 v3.3.1/go.mod h1:DpbFT2B4fXpKiq69fEoMe+71JrmUn5aUekYy9fNKnQw=

hash.go

@@ -0,0 +1,28 @@
+package task
+
+import (
+	"fmt"
+
+	"github.com/go-task/task/v3/internal/hash"
+	"github.com/go-task/task/v3/taskfile"
+)
+
+func (e *Executor) GetHash(t *taskfile.Task) (string, error) {
+	r := t.Run
+	if r == "" {
+		r = e.Taskfile.Run
+	}
+
+	var h hash.HashFunc
+	switch r {
+	case "always":
+		h = hash.Empty
+	case "once":
+		h = hash.Name
+	case "when_changed":
+		h = hash.Hash
+	default:
+		return "", fmt.Errorf(`task: invalid run "%s"`, r)
+	}
+	return h(t)
+}

internal/compiler/compiler.go

@@ -7,6 +7,7 @@ import (
 // Compiler handles compilation of a task before its execution.
 // E.g. variable merger, template processing, etc.
 type Compiler interface {
+	GetTaskfileVariables() (*taskfile.Vars, error)
 	GetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error)
 	FastGetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error)
 	HandleDynamicVar(v taskfile.Var, dir string) (string, error)

internal/compiler/v2/compiler_v2.go

@@ -30,6 +30,10 @@ type CompilerV2 struct {
 	muDynamicCache sync.Mutex
 }
 
+func (c *CompilerV2) GetTaskfileVariables() (*taskfile.Vars, error) {
+	return &taskfile.Vars{}, nil
+}
+
 // FastGetVariables is a no-op on v2
 func (c *CompilerV2) FastGetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error) {
 	return c.GetVariables(t, call)
@@ -105,7 +109,7 @@ func (c *CompilerV2) HandleDynamicVar(v taskfile.Var, _ string) (string, error)
 		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)
+		return "", fmt.Errorf(`task: Command "%s" failed: %s`, opts.Command, err)
 	}
 
 	// Trim a single trailing newline from the result to make most command

internal/compiler/v3/compiler_v3.go

@@ -29,17 +29,23 @@ type CompilerV3 struct {
 	muDynamicCache sync.Mutex
 }
 
+func (c *CompilerV3) GetTaskfileVariables() (*taskfile.Vars, error) {
+	return c.getVariables(nil, nil, true)
+}
+
 func (c *CompilerV3) GetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error) {
-	return c.getVariables(t, call, true)
+	return c.getVariables(t, &call, true)
 }
 
 func (c *CompilerV3) FastGetVariables(t *taskfile.Task, call taskfile.Call) (*taskfile.Vars, error) {
-	return c.getVariables(t, call, false)
+	return c.getVariables(t, &call, false)
 }
 
-func (c *CompilerV3) getVariables(t *taskfile.Task, call taskfile.Call, evaluateShVars bool) (*taskfile.Vars, error) {
+func (c *CompilerV3) getVariables(t *taskfile.Task, call *taskfile.Call, evaluateShVars bool) (*taskfile.Vars, error) {
 	result := compiler.GetEnviron()
-	result.Set("TASK", taskfile.Var{Static: t.Task})
+	if t != nil {
+		result.Set("TASK", taskfile.Var{Static: t.Task})
+	}
 
 	getRangeFunc := func(dir string) func(k string, v taskfile.Var) error {
 		return func(k string, v taskfile.Var) error {
@@ -74,6 +80,11 @@ func (c *CompilerV3) getVariables(t *taskfile.Task, call taskfile.Call, evaluate
 	if err := c.TaskfileVars.Range(rangeFunc); err != nil {
 		return nil, err
 	}
+
+	if t == nil || call == nil {
+		return result, nil
+	}
+
 	if err := call.Vars.Range(rangeFunc); err != nil {
 		return nil, err
 	}
@@ -125,7 +136,7 @@ func (c *CompilerV3) HandleDynamicVar(v taskfile.Var, dir string) (string, error
 		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)
+		return "", fmt.Errorf(`task: Command "%s" failed: %s`, opts.Command, err)
 	}
 
 	// Trim a single trailing newline from the result to make most command

internal/hash/hash.go

@@ -0,0 +1,24 @@
+package hash
+
+import (
+	"fmt"
+
+	"github.com/mitchellh/hashstructure/v2"
+
+	"github.com/go-task/task/v3/taskfile"
+)
+
+type HashFunc func(*taskfile.Task) (string, error)
+
+func Empty(*taskfile.Task) (string, error) {
+	return "", nil
+}
+
+func Name(t *taskfile.Task) (string, error) {
+	return t.Task, nil
+}
+
+func Hash(t *taskfile.Task) (string, error) {
+	h, err := hashstructure.Hash(t, hashstructure.FormatV2, nil)
+	return fmt.Sprintf("%s:%d", t.Task, h), err
+}

status.go

@@ -29,16 +29,35 @@ func (e *Executor) Status(ctx context.Context, calls ...taskfile.Call) error {
 }
 
 func (e *Executor) isTaskUpToDate(ctx context.Context, t *taskfile.Task) (bool, error) {
+	if len(t.Status) == 0 && len(t.Sources) == 0 {
+		return false, nil
+	}
+
 	if len(t.Status) > 0 {
-		return e.isTaskUpToDateStatus(ctx, t)
+		isUpToDate, err := e.isTaskUpToDateStatus(ctx, t)
+		if err != nil {
+			return false, err
+		}
+		if !isUpToDate {
+			return false, nil
+		}
 	}
 
-	checker, err := e.getStatusChecker(t)
-	if err != nil {
-		return false, err
+	if len(t.Sources) > 0 {
+		checker, err := e.getStatusChecker(t)
+		if err != nil {
+			return false, err
+		}
+		isUpToDate, err := checker.IsUpToDate()
+		if err != nil {
+			return false, err
+		}
+		if !isUpToDate {
+			return false, nil
+		}
 	}
 
-	return checker.IsUpToDate()
+	return true, nil
 }
 
 func (e *Executor) statusOnError(t *taskfile.Task) error {

task.go

@@ -58,6 +58,8 @@ type Executor struct {
 	concurrencySemaphore chan struct{}
 	taskCallCount        map[string]*int32
 	mkdirMutexMap        map[string]*sync.Mutex
+	executionHashes      map[string]context.Context
+	executionHashesMutex sync.Mutex
 }
 
 // Run runs Task
@@ -149,9 +151,12 @@ func (e *Executor) Setup() error {
 	if v == 2.0 {
 		v = 2.6
 	}
+	if v == 3.0 {
+		v = 3.7
+	}
 
-	if v > 3.0 {
-		return fmt.Errorf(`task: Taskfile versions greater than v3.0 not implemented in the version of Task`)
+	if v > 3.7 {
+		return fmt.Errorf(`task: Taskfile versions greater than v3.7 not implemented in the version of Task`)
 	}
 
 	// Color available only on v3
@@ -176,6 +181,23 @@ func (e *Executor) Setup() error {
 		}
 	}
 
+	if v >= 3.0 {
+		env, err := read.Dotenv(e.Compiler, e.Taskfile, e.Dir)
+		if err != nil {
+			return err
+		}
+
+		err = env.Range(func(key string, value taskfile.Var) error {
+			if _, ok := e.Taskfile.Env.Mapping[key]; !ok {
+				e.Taskfile.Env.Set(key, value)
+			}
+			return nil
+		})
+		if err != nil {
+			return err
+		}
+	}
+
 	if v < 2.1 && e.Taskfile.Output != "" {
 		return fmt.Errorf(`task: Taskfile option "output" is only available starting on Taskfile version v2.1`)
 	}
@@ -243,6 +265,24 @@ func (e *Executor) Setup() error {
 		}
 	}
 
+	if v < 3.7 {
+		if e.Taskfile.Run != "" {
+			return errors.New(`task: Setting the "run" type is only available starting on Taskfile version v3.7`)
+		}
+
+		for _, task := range e.Taskfile.Tasks {
+			if task.Run != "" {
+				return errors.New(`task: Setting the "run" type is only available starting on Taskfile version v3.7`)
+			}
+		}
+	}
+
+	if e.Taskfile.Run == "" {
+		e.Taskfile.Run = "always"
+	}
+
+	e.executionHashes = make(map[string]context.Context)
+
 	e.taskCallCount = make(map[string]*int32, len(e.Taskfile.Tasks))
 	e.mkdirMutexMap = make(map[string]*sync.Mutex, len(e.Taskfile.Tasks))
 	for k := range e.Taskfile.Tasks {
@@ -269,48 +309,50 @@ func (e *Executor) RunTask(ctx context.Context, call taskfile.Call) error {
 	release := e.acquireConcurrencyLimit()
 	defer release()
 
-	if err := e.runDeps(ctx, t); err != nil {
-		return err
-	}
-
-	if !e.Force {
-		preCondMet, err := e.areTaskPreconditionsMet(ctx, t)
-		if err != nil {
+	return e.startExecution(ctx, t, func(ctx context.Context) error {
+		if err := e.runDeps(ctx, t); err != nil {
 			return err
 		}
 
-		upToDate, err := e.isTaskUpToDate(ctx, t)
-		if err != nil {
-			return err
-		}
-
-		if upToDate && preCondMet {
-			if !e.Silent {
-				e.Logger.Errf(logger.Magenta, `task: Task "%s" is up to date`, t.Name())
-			}
-			return nil
-		}
-	}
-
-	if err := e.mkdir(t); err != nil {
-		e.Logger.Errf(logger.Red, "task: cannot make directory %q: %v", t.Dir, err)
-	}
-
-	for i := range t.Cmds {
-		if err := e.runCommand(ctx, t, call, i); err != nil {
-			if err2 := e.statusOnError(t); err2 != nil {
-				e.Logger.VerboseErrf(logger.Yellow, "task: error cleaning status on error: %v", err2)
+		if !e.Force {
+			preCondMet, err := e.areTaskPreconditionsMet(ctx, t)
+			if err != nil {
+				return err
 			}
 
-			if execext.IsExitError(err) && t.IgnoreError {
-				e.Logger.VerboseErrf(logger.Yellow, "task: task error ignored: %v", err)
-				continue
+			upToDate, err := e.isTaskUpToDate(ctx, t)
+			if err != nil {
+				return err
 			}
 
-			return &taskRunError{t.Task, err}
+			if upToDate && preCondMet {
+				if !e.Silent {
+					e.Logger.Errf(logger.Magenta, `task: Task "%s" is up to date`, t.Name())
+				}
+				return nil
+			}
 		}
-	}
-	return nil
+
+		if err := e.mkdir(t); err != nil {
+			e.Logger.Errf(logger.Red, "task: cannot make directory %q: %v", t.Dir, err)
+		}
+
+		for i := range t.Cmds {
+			if err := e.runCommand(ctx, t, call, i); err != nil {
+				if err2 := e.statusOnError(t); err2 != nil {
+					e.Logger.VerboseErrf(logger.Yellow, "task: error cleaning status on error: %v", err2)
+				}
+
+				if execext.IsExitError(err) && t.IgnoreError {
+					e.Logger.VerboseErrf(logger.Yellow, "task: task error ignored: %v", err)
+					continue
+				}
+
+				return &taskRunError{t.Task, err}
+			}
+		}
+		return nil
+	})
 }
 
 func (e *Executor) mkdir(t *taskfile.Task) error {
@@ -428,3 +470,32 @@ func getEnviron(t *taskfile.Task) []string {
 
 	return environ
 }
+
+func (e *Executor) startExecution(ctx context.Context, t *taskfile.Task, execute func(ctx context.Context) error) error {
+	h, err := e.GetHash(t)
+	if err != nil {
+		return err
+	}
+
+	if h == "" {
+		return execute(ctx)
+	}
+
+	e.executionHashesMutex.Lock()
+	otherExecutionCtx, ok := e.executionHashes[h]
+
+	if ok {
+		e.executionHashesMutex.Unlock()
+		e.Logger.VerboseErrf(logger.Magenta, "task: skipping execution of task: %s", h)
+		<-otherExecutionCtx.Done()
+		return nil
+	}
+
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	e.executionHashes[h] = ctx
+	e.executionHashesMutex.Unlock()
+
+	return execute(ctx)
+}

task_test.go

@@ -252,12 +252,18 @@ func TestDeps(t *testing.T) {
 
 func TestStatus(t *testing.T) {
 	const dir = "testdata/status"
-	var file = filepath.Join(dir, "foo.txt")
 
-	_ = os.Remove(file)
+	files := []string{
+		"foo.txt",
+		"bar.txt",
+	}
 
-	if _, err := os.Stat(file); err == nil {
-		t.Errorf("File should not exist: %v", err)
+	for _, f := range files {
+		path := filepath.Join(dir, f)
+		_ = os.Remove(path)
+		if _, err := os.Stat(path); err == nil {
+			t.Errorf("File should not exist: %v", err)
+		}
 	}
 
 	var buff bytes.Buffer
@@ -269,17 +275,33 @@ func TestStatus(t *testing.T) {
 	}
 	assert.NoError(t, e.Setup())
 	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "gen-foo"}))
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "gen-bar"}))
 
-	if _, err := os.Stat(file); err != nil {
-		t.Errorf("File should exist: %v", err)
+	for _, f := range files {
+		if _, err := os.Stat(filepath.Join(dir, f)); err != nil {
+			t.Errorf("File should exist: %v", err)
+		}
 	}
 
 	e.Silent = false
-	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "gen-foo"}))
 
-	if buff.String() != `task: Task "gen-foo" is up to date`+"\n" {
-		t.Errorf("Wrong output message: %s", buff.String())
-	}
+	// all: not up-to-date
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "gen-foo"}))
+	assert.Equal(t, "task: [gen-foo] touch foo.txt", strings.TrimSpace(buff.String()))
+	buff.Reset()
+	// status: not up-to-date
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "gen-foo"}))
+	assert.Equal(t, "task: [gen-foo] touch foo.txt", strings.TrimSpace(buff.String()))
+	buff.Reset()
+
+	// sources: not up-to-date
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "gen-bar"}))
+	assert.Equal(t, "task: [gen-bar] touch bar.txt", strings.TrimSpace(buff.String()))
+	buff.Reset()
+	// all: up-to-date
+	assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "gen-bar"}))
+	assert.Equal(t, `task: Task "gen-bar" is up to date`, strings.TrimSpace(buff.String()))
+	buff.Reset()
 }
 
 func TestPrecondition(t *testing.T) {
@@ -904,6 +926,44 @@ func TestDotenvShouldAllowMissingEnv(t *testing.T) {
 	tt.Run(t)
 }
 
+func TestDotenvHasLocalEnvInPath(t *testing.T) {
+	tt := fileContentTest{
+		Dir:       "testdata/dotenv/local_env_in_path",
+		Target:    "default",
+		TrimSpace: false,
+		Files: map[string]string{
+			"var.txt": "VAR='var_in_dot_env_1'\n",
+		},
+	}
+	tt.Run(t)
+}
+
+func TestDotenvHasLocalVarInPath(t *testing.T) {
+	tt := fileContentTest{
+		Dir:       "testdata/dotenv/local_var_in_path",
+		Target:    "default",
+		TrimSpace: false,
+		Files: map[string]string{
+			"var.txt": "VAR='var_in_dot_env_3'\n",
+		},
+	}
+	tt.Run(t)
+}
+
+func TestDotenvHasEnvVarInPath(t *testing.T) {
+	os.Setenv("ENV_VAR", "testing")
+
+	tt := fileContentTest{
+		Dir:       "testdata/dotenv/env_var_in_path",
+		Target:    "default",
+		TrimSpace: false,
+		Files: map[string]string{
+			"var.txt": "VAR='var_in_dot_env_2'\n",
+		},
+	}
+	tt.Run(t)
+}
+
 func TestExitImmediately(t *testing.T) {
 	const dir = "testdata/exit_immediately"
 
@@ -919,3 +979,14 @@ func TestExitImmediately(t *testing.T) {
 	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`)
 }
+
+func TestRunOnlyRunsJobsHashOnce(t *testing.T) {
+	tt := fileContentTest{
+		Dir:    "testdata/run",
+		Target: "generate-hash",
+		Files: map[string]string{
+			"hash.txt": "starting 1\n1\n2\n",
+		},
+	}
+	tt.Run(t)
+}

taskfile/read/dotenv.go

@@ -0,0 +1,50 @@
+package read
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/joho/godotenv"
+
+	"github.com/go-task/task/v3/internal/compiler"
+	"github.com/go-task/task/v3/internal/templater"
+	"github.com/go-task/task/v3/taskfile"
+)
+
+func Dotenv(c compiler.Compiler, tf *taskfile.Taskfile, dir string) (*taskfile.Vars, error) {
+	if len(tf.Dotenv) == 0 {
+		return nil, nil
+	}
+
+	vars, err := c.GetTaskfileVariables()
+	if err != nil {
+		return nil, err
+	}
+
+	env := &taskfile.Vars{}
+
+	tr := templater.Templater{Vars: vars, RemoveNoValue: true}
+
+	for _, dotEnvPath := range tf.Dotenv {
+		dotEnvPath = tr.Replace(dotEnvPath)
+
+		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 := env.Mapping[key]; !ok {
+				env.Set(key, taskfile.Var{Static: value})
+			}
+		}
+	}
+
+	return env, nil
+}

taskfile/read/taskfile.go

@@ -7,7 +7,6 @@ import (
 	"path/filepath"
 	"runtime"
 
-	"github.com/joho/godotenv"
 	"gopkg.in/yaml.v3"
 
 	"github.com/go-task/task/v3/internal/templater"
@@ -37,27 +36,6 @@ func Taskfile(dir string, entrypoint string) (*taskfile.Taskfile, error) {
 		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}

taskfile/task.go

@@ -22,6 +22,7 @@ type Task struct {
 	Method        string
 	Prefix        string
 	IgnoreError   bool
+	Run           string
 }
 
 func (t *Task) Name() string {
@@ -61,6 +62,7 @@ func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		Method        string
 		Prefix        string
 		IgnoreError   bool `yaml:"ignore_error"`
+		Run           string
 	}
 	if err := unmarshal(&task); err != nil {
 		return err
@@ -81,5 +83,6 @@ func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	t.Method = task.Method
 	t.Prefix = task.Prefix
 	t.IgnoreError = task.IgnoreError
+	t.Run = task.Run
 	return nil
 }

taskfile/taskfile.go

@@ -17,6 +17,7 @@ type Taskfile struct {
 	Tasks      Tasks
 	Silent     bool
 	Dotenv     []string
+	Run        string
 }
 
 // UnmarshalYAML implements yaml.Unmarshaler interface
@@ -32,6 +33,7 @@ func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		Tasks      Tasks
 		Silent     bool
 		Dotenv     []string
+		Run        string
 	}
 	if err := unmarshal(&taskfile); err != nil {
 		return err
@@ -46,6 +48,7 @@ func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	tf.Tasks = taskfile.Tasks
 	tf.Silent = taskfile.Silent
 	tf.Dotenv = taskfile.Dotenv
+	tf.Run = taskfile.Run
 	if tf.Expansions <= 0 {
 		tf.Expansions = 2
 	}

testdata/dotenv/env_var_in_path/.env.testing

@@ -0,0 +1 @@
+VAR_IN_DOTENV=var_in_dot_env_2

testdata/dotenv/env_var_in_path/Taskfile.yml

@@ -0,0 +1,8 @@
+version: "3"
+
+dotenv: [".env.{{.ENV_VAR}}"]
+
+tasks:
+  default:
+    cmds:
+      - echo "VAR='$VAR_IN_DOTENV'" > var.txt

testdata/dotenv/local_env_in_path/.env.testing

@@ -0,0 +1 @@
+VAR_IN_DOTENV=var_in_dot_env_1

testdata/dotenv/local_env_in_path/Taskfile.yml

@@ -0,0 +1,11 @@
+version: "3"
+
+env:
+  LOCAL_ENV: testing
+
+dotenv: [".env.{{.LOCAL_ENV}}"]
+
+tasks:
+  default:
+    cmds:
+      - echo "VAR='$VAR_IN_DOTENV'" > var.txt

testdata/dotenv/local_var_in_path/.env.testing

@@ -0,0 +1 @@
+VAR_IN_DOTENV=var_in_dot_env_3

testdata/dotenv/local_var_in_path/Taskfile.yml

@@ -0,0 +1,13 @@
+version: "3"
+
+vars:
+  PART_1: test
+  PART_2: ing
+  LOCAL_VAR: "{{.PART_1}}{{.PART_2}}"
+
+dotenv: [".env.{{.LOCAL_VAR}}"]
+
+tasks:
+  default:
+    cmds:
+      - echo "VAR='$VAR_IN_DOTENV'" > var.txt

testdata/run/.gitignore

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

testdata/run/Taskfile.yml

@@ -0,0 +1,24 @@
+version: '3.7'
+run: when_changed
+
+tasks:
+  generate-hash:
+    - rm -f hash.txt
+    - task: input-content
+      vars: { CONTENT: '1' }
+    - task: input-content
+      vars: { CONTENT: '2' }
+    - task: input-content
+      vars: { CONTENT: '2' }
+
+  input-content:
+    deps:
+      - task: create-output
+        vars: { CONTENT: '1' }
+    cmds:
+      - echo {{.CONTENT}} >> hash.txt
+
+  create-output:
+    run: once
+    cmds:
+      - echo starting {{.CONTENT}} >> hash.txt

testdata/status/Taskfile.yml

@@ -4,5 +4,15 @@ tasks:
   gen-foo:
     cmds:
       - touch foo.txt
+    sources:
+      - ./foo.txt
     status:
-      - test -f foo.txt
+      - test 1 = 0
+
+  gen-bar:
+    cmds:
+      - touch bar.txt
+    sources:
+      - ./bar.txt
+    status: 
+      - test 1 = 1

variables.go

@@ -59,6 +59,7 @@ func (e *Executor) compiledTask(call taskfile.Call, evaluateShVars bool) (*taskf
 		Method:      r.Replace(origTask.Method),
 		Prefix:      r.Replace(origTask.Prefix),
 		IgnoreError: origTask.IgnoreError,
+		Run:         r.Replace(origTask.Run),
 	}
 	new.Dir, err = execext.Expand(new.Dir)
 	if err != nil {