all: add Go 1.21, drop Go 1.19

Per our Go support policy accepted in https://cuelang.org/issue/1937,
the upcoming CUE v0.7 release will require Go 1.20 or later.

Note that the files generated by gocode contain slightly smaller data,
which is due to a minor non-breaking change in encoding/gob in Go 1.21.
For more information, see https://cuelang.org/cl/1167483.

Signed-off-by: Daniel Martí <[email protected]>
Change-Id: I63dc3d443feedf899b632320cce8060b925accec
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1167484
Reviewed-by: Paul Jolly <[email protected]>
TryBot-Result: CUEcueckoo <[email protected]>
Unity-Result: CUE porcuepine <[email protected]>

Author: mvdan

.github/workflows/release.yml

@@ -66,7 +66,7 @@ jobs:
         uses: actions/setup-go@v4
         with:
           cache: false
-          go-version: 1.20.6
+          go-version: 1.21.0
       - name: Setup qemu
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx

.github/workflows/trybot.yml

@@ -17,8 +17,8 @@ jobs:
       fail-fast: false
       matrix:
         go-version:
-          - 1.19.x
           - 1.20.x
+          - 1.21.x
         runner:
           - ubuntu-22.04
           - macos-11
@@ -110,7 +110,7 @@ jobs:
           github.repository == 'cue-lang/cue' && (((github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/release-branch.')) && (! (contains(github.event.head_commit.message, '
           Dispatch-Trailer: {"type":"')))) || github.ref == 'refs/heads/ci/test')
         run: go clean -testcache
-      - if: (matrix.go-version == '1.20.x' && matrix.runner == 'ubuntu-22.04')
+      - if: (matrix.go-version == '1.21.x' && matrix.runner == 'ubuntu-22.04')
         name: Early git and code sanity checks
         run: |-
           # Ensure the recent commit messages have Signed-off-by headers. We
@@ -167,20 +167,20 @@ jobs:
           fi
       - if: |-
           ((github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/release-branch.')) && (! (contains(github.event.head_commit.message, '
-          Dispatch-Trailer: {"type":"')))) || (matrix.go-version == '1.20.x' && matrix.runner == 'ubuntu-22.04')
+          Dispatch-Trailer: {"type":"')))) || (matrix.go-version == '1.21.x' && matrix.runner == 'ubuntu-22.04')
         run: echo CUE_LONG=true >> $GITHUB_ENV
-      - if: (matrix.go-version == '1.20.x' && matrix.runner == 'ubuntu-22.04')
+      - if: (matrix.go-version == '1.21.x' && matrix.runner == 'ubuntu-22.04')
         name: Generate
         run: go generate ./...
       - if: |-
           ((github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/release-branch.')) && (! (contains(github.event.head_commit.message, '
-          Dispatch-Trailer: {"type":"')))) || !(matrix.go-version == '1.20.x' && matrix.runner == 'ubuntu-22.04')
+          Dispatch-Trailer: {"type":"')))) || !(matrix.go-version == '1.21.x' && matrix.runner == 'ubuntu-22.04')
         name: Test
         run: go test ./...
-      - if: (matrix.go-version == '1.20.x' && matrix.runner == 'ubuntu-22.04')
+      - if: (matrix.go-version == '1.21.x' && matrix.runner == 'ubuntu-22.04')
         name: Test with -race
         run: go test -race ./...
-      - if: (matrix.go-version == '1.20.x' && matrix.runner == 'ubuntu-22.04')
+      - if: (matrix.go-version == '1.21.x' && matrix.runner == 'ubuntu-22.04')
         name: Check
         run: go vet ./...
       - name: Check that git is clean at the end of the job

CONTRIBUTING.md

@@ -114,7 +114,7 @@ href="mailto:[email protected]">[email protected]</a>.
 The code contribution process used by the CUE project is a little different from
 that used by other open source projects.  We assume you have a basic
 understanding of [`git`](https://git-scm.com/) and [Go](https://golang.org)
-(1.19 or later).
+(1.20 or later).
 
 The first thing to decide is whether you want to contribute a code change via
 GitHub or GerritHub. Both workflows are fully supported, and whilst GerritHub is

README.md

@@ -16,7 +16,7 @@
 [![Go Reference](https://pkg.go.dev/badge/cuelang.org/go.svg)](https://pkg.go.dev/cuelang.org/go)
 [![Github](https://github.com/cue-lang/cue/actions/workflows/trybot.yml/badge.svg)](https://github.com/cue-lang/cue/actions/workflows/trybot.yml?query=branch%3Amaster+event%3Apush)
 [![GolangCI](https://golangci.com/badges/github.com/cue-lang/cue.svg)](https://golangci.com/r/github.com/cue-lang/cue)
-[![Go 1.19+](https://img.shields.io/badge/go-1.19-9cf.svg)](https://golang.org/dl/)
+[![Go 1.20+](https://img.shields.io/badge/go-1.20-9cf.svg)](https://golang.org/dl/)
 [![platforms](https://img.shields.io/badge/platforms-linux|windows|macos-inactive.svg)]()
 
 # The CUE Data Constraint Language

doc/install.md

@@ -6,7 +6,7 @@ Currently CUE can only be installed from source.
 
 ### Prerequisites
 
-Go 1.19 or higher (see below)
+Go 1.20 or higher (see below)
 
 ### Installing CUE
 

encoding/gocode/testdata/pkg1/cue_gen.go

@@ -1,6 +1,6 @@
 module cuelang.org/go
 
-go 1.19
+go 1.20
 
 require (
 	github.com/cockroachdb/apd/v3 v3.2.0

encoding/gocode/testdata/pkg2/cue_gen.go

@@ -28,16 +28,16 @@ linuxMachine:   "ubuntu-22.04"
 macosMachine:   "macos-11"
 windowsMachine: "windows-2022"
 
-previousStableGo: "1.19.x"
+previousStableGo: "1.20.x"
 
 // Use the latest Go version for extra checks,
 // such as running tests with the data race detector.
-latestStableGo: "1.20.x"
+latestStableGo: "1.21.x"
 
 // Use a specific latest version for release builds.
 // Note that we don't want ".x" for the sake of reproducibility,
 // so we instead pin a specific Go release.
-pinnedReleaseGo: "1.20.6"
+pinnedReleaseGo: "1.21.0"
 
 goreleaserVersion: "v1.18.2"