Upgrade to Go 1.26

.circleci/config.yml

@@ -4,7 +4,7 @@ parameters:
 defaults: &defaults
   resource_class: large
   docker:
-      - image: bepsays/ci-hugoreleaser:1.22500.20400
+      - image: bepsays/ci-hugoreleaser:1.22600.20000
 environment: &buildenv
       GOMODCACHE: /root/project/gomodcache
 version: 2
@@ -58,7 +58,7 @@ jobs:
     environment:
         <<: [*buildenv]
     docker:
-    - image: bepsays/ci-hugoreleaser-linux-arm64:1.22500.20400
+    - image: bepsays/ci-hugoreleaser-linux-arm64:1.22600.20000
     steps:
       - *restore-cache
       - &attach-workspace

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.24.x, 1.25.x]
+        go-version: [1.25.x, 1.26.x]
         os: [ubuntu-latest, windows-latest] # macos disabled for now because of disk space issues.
     runs-on: ${{ matrix.os }}
     steps:

Dockerfile

@@ -2,7 +2,7 @@
 # Twitter:      https://twitter.com/gohugoio
 # Website:      https://gohugo.io/
 
-ARG GO_VERSION="1.25"
+ARG GO_VERSION="1.26"
 ARG ALPINE_VERSION="3.22"
 ARG DART_SASS_VERSION="1.79.3"
 

commands/import.go

@@ -463,7 +463,7 @@ func (c *importCommand) importFromJekyll(args []string) error {
 	}
 
 	c.r.Println("Congratulations!", fileCount, "post(s) imported!")
-	c.r.Println("Now, start Hugo by yourself:\n")
+	c.r.Println("Now, start Hugo by yourself:")
 	c.r.Println("cd " + args[1])
 	c.r.Println("git init")
 	c.r.Println("git submodule add https://github.com/theNewDynamic/gohugo-theme-ananke themes/ananke")

go.mod

@@ -193,4 +193,4 @@ require (
 	software.sslmate.com/src/go-pkcs12 v0.2.0 // indirect
 )
 
-go 1.24.0
+go 1.25.0

main_test.go

@@ -461,7 +461,14 @@ func testSetupFunc() func(env *testscript.Env) error {
 			goVersion = goVersion[:strings.LastIndex(goVersion, ".")]
 		}
 
+		goModVersion := goVersion
+		// From Go 1.26.0 on, the version used in go.mod on go mod init is the current version minus one.
+		if htesting.GoMinorVersion() >= 26 {
+			goModVersion = "1.25.0"
+		}
+
 		keyVals = append(keyVals, "GOVERSION", goVersion)
+		keyVals = append(keyVals, "GOMODVERSION", goModVersion)
 		envhelpers.SetEnvVars(&env.Vars, keyVals...)
 
 		return nil

resources/images/images_integration_test.go

@@ -16,6 +16,7 @@ package images_test
 import (
 	"testing"
 
+	"github.com/gohugoio/hugo/htesting"
 	"github.com/gohugoio/hugo/hugolib"
 )
 
@@ -52,6 +53,10 @@ Orientation: {{ $orientation }}|eq 6: {{ eq $orientation 6 }}|Type: {{ printf "%
 }
 
 func TestColorsIssue14453(t *testing.T) {
+	// Go changed their JPEG implementation in Go 1.26, so we cannot run this test on earlier versions. See https://go.dev/doc/go1.26#imagejpegpkgimagejpeg
+	if htesting.GoMinorVersion() < 26 {
+		t.Skip("Go 1.26+ required")
+	}
 	files := `
 -- hugo.toml --
 -- assets/sunset.jpg --
@@ -69,7 +74,7 @@ Colors: {{ $colors }}|
 			cfg.NeedsOsFS = true
 			cfg.WorkingDir = tempDir
 		}))
-		b.AssertFileContent("public/index.html", "Colors: [#2e2f34 #a39e94 #d39e57 #a96b3a #747b84 #7c838a]|")
+		b.AssertFileContent("public/index.html", "Colors: [#2e2f34 #a39e94 #d29e58 #ab6b3a #747b84 #7c838a]|")
 
 	}
 }

resources/images/imagetesting/testing.go

@@ -236,7 +236,8 @@ func goldenEqual(img1, img2 *image.NRGBA) bool {
 }
 
 // We don't have a CI test environment for these, and there are known dithering issues that makes these time consuming to maintain.
-var SkipGoldenTests = runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" || runtime.GOARCH == "s390x"
+// Go changed their JPEG implementation in Go 1.26, so we cannot run the golden tests on earlier versions. See https://go.dev/doc/go1.26#imagejpegpkgimagejpeg
+var SkipGoldenTests = htesting.GoMinorVersion() < 26 || runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" || runtime.GOARCH == "s390x"
 
 // UsesFMA indicates whether "fused multiply and add" (FMA) instruction is
 // used.  The command "grep FMADD go/test/codegen/floats.go" can help keep

testscripts/commands/mod.txt

@@ -46,4 +46,4 @@ title = "Hugo Sub Module"
 -- golden/go.mod.testsubmod --
 module testsubmod
 
-go ${GOVERSION}
+go ${GOMODVERSION}

testscripts/commands/mod_init.txt

@@ -12,4 +12,4 @@ path="github.com/bep/empty-hugo-module"
 -- golden/go.mod.testsubmod --
 module testsubmod
 
-go ${GOVERSION}
+go ${GOMODVERSION}