chore: bump minimum Go to 1.26 and adopt 1.26 features (#2920)

Author: vmaerten

.github/renovate.json

@@ -10,7 +10,7 @@
   "osvVulnerabilityAlerts": true,
   "postUpdateOptions": ["gomodTidy"],
   "constraints": {
-    "go": "1.25.10"
+    "go": "1.26.4"
   },
   "customManagers": [
     {

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.25.x, 1.26.x]
+        go-version: [1.26.x, 1.27.x]
     runs-on: ubuntu-latest
     steps:
       - name: 📥 Checkout
@@ -40,7 +40,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.25.x, 1.26.x]
+        go-version: [1.26.x, 1.27.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -63,7 +63,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.25.x, 1.26.x]
+        go-version: [1.26.x, 1.27.x]
     runs-on: ubuntu-latest
     steps:
       - name: 📥 Checkout

.github/workflows/release-nightly.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.x
+          go-version: 1.27.x
 
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@f06c13b6b1a9625abc9e6e439d9c05a8f2190e94 # v7

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
-          go-version: 1.26.x
+          go-version: 1.27.x
 
       - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## Unreleased
+
+### 📦 Package API
+
+- Bumped the minimum Go version to 1.26. Task follows Go's two-latest support
+  window, and is now tested against 1.26 and 1.27. This only affects projects
+  importing Task as a Go module (#2920 by @vmaerten).
+
 ## v3.53.1 - 2026-08-18
 
 ### 🚀 Features

checksum_benchmark_test.go

@@ -1,5 +1,4 @@
 //go:build fsbench
-// +build fsbench
 
 package task_test
 

errors/error_taskfile_decode.go

@@ -25,8 +25,7 @@ type (
 
 func NewTaskfileDecodeError(err error, node *yaml.Node) *TaskfileDecodeError {
 	// If the error is already a DecodeError, return it
-	taskfileInvalidErr := &TaskfileDecodeError{}
-	if errors.As(err, &taskfileInvalidErr) {
+	if taskfileInvalidErr, ok := errors.AsType[*TaskfileDecodeError](err); ok {
 		return taskfileInvalidErr
 	}
 	return &TaskfileDecodeError{
@@ -45,8 +44,7 @@ func (err *TaskfileDecodeError) Error() string {
 		fmt.Fprintln(buf, color.RedString("err:  %s", err.Message))
 	} else {
 		// Extract the errors from the TypeError
-		te := &yaml.TypeError{}
-		if errors.As(err.Err, &te) {
+		if te, ok := errors.AsType[*yaml.TypeError](err.Err); ok {
 			if len(te.Errors) > 1 {
 				fmt.Fprintln(buf, color.RedString("errs:"))
 				for _, message := range te.Errors {

errors/errors.go

@@ -67,6 +67,13 @@ func As(err error, target any) bool {
 	return errors.As(err, target)
 }
 
+// AsType wraps the standard errors.AsType function so that we don't need to alias
+// that package. It returns the first error in err's tree that matches type T, and
+// whether such an error was found.
+func AsType[T error](err error) (T, bool) {
+	return errors.AsType[T](err)
+}
+
 // Unwrap wraps the standard errors.Unwrap function so that we don't need to alias that package.
 func Unwrap(err error) error {
 	return errors.Unwrap(err)

errors/errors_task.go

@@ -48,12 +48,10 @@ func (err *TaskRunError) Code() int {
 }
 
 func (err *TaskRunError) TaskExitCode() int {
-	var exit interp.ExitStatus
-	if errors.As(err.Err, &exit) {
+	if exit, ok := errors.AsType[interp.ExitStatus](err.Err); ok {
 		return int(exit)
 	}
-	var timeout *TaskTimeoutError
-	if errors.As(err.Err, &timeout) {
+	if _, ok := errors.AsType[*TaskTimeoutError](err.Err); ok {
 		return TimeoutExitCode
 	}
 	return err.Code()

go.mod

@@ -1,6 +1,6 @@
 module github.com/go-task/task/v3
 
-go 1.25.10
+go 1.26.4
 
 require (
 	charm.land/bubbles/v2 v2.1.1