ci: drop go1.12 add go1.15

Switch to code generation happening against 1.14.9

Update README to reflect new minimum version of Go 1.13

Change-Id: If8d790fe6500a708a2ba7fd8737ffd380048a1be
Reviewed-on: https://cue-review.googlesource.com/c/cue/+/7021
Reviewed-by: Paul Jolly <paul@myitcv.org.uk>

.github/workflows/test.yml

@@ -16,9 +16,9 @@ jobs:
       fail-fast: false
       matrix:
         go-version:
-        - 1.12.x
         - 1.13.x
-        - 1.14.3
+        - 1.14.9
+        - 1.15.x
         os:
         - ubuntu-latest
         - macos-latest
@@ -38,15 +38,14 @@ jobs:
         key: ${{ runner.os }}-${{ matrix.go-version }}-go-${{ hashFiles('**/go.sum')
           }}
         restore-keys: ${{ runner.os }}-${{ matrix.go-version }}-go-
-    - if: matrix.go-version == '1.14.3' && matrix.os != 'windows-latest'
+    - if: matrix.go-version == '1.14.9' && matrix.os != 'windows-latest'
       name: Generate
       run: go generate ./...
     - name: Test
       run: go test ./...
     - name: Test with -race
       run: go test -race ./...
-    - if: matrix.go-version == '1.14.3' || matrix.go-version == '1.13.x'
-      name: gorelease check
+    - name: gorelease check
       run: go run golang.org/x/exp/cmd/gorelease
     - name: Check that git is clean post generate and tests
       run: test -z "$(git status --porcelain)" || (git status; git diff; false)

.github/workflows/test_dispatch.yml

@@ -42,15 +42,14 @@ jobs:
         key: ${{ runner.os }}-${{ matrix.go-version }}-go-${{ hashFiles('**/go.sum')
           }}
         restore-keys: ${{ runner.os }}-${{ matrix.go-version }}-go-
-    - if: matrix.go-version == '1.14.3' && matrix.os != 'windows-latest'
+    - if: matrix.go-version == '1.14.9' && matrix.os != 'windows-latest'
       name: Generate
       run: go generate ./...
     - name: Test
       run: go test ./...
     - name: Test with -race
       run: go test -race ./...
-    - if: matrix.go-version == '1.14.3' || matrix.go-version == '1.13.x'
-      name: gorelease check
+    - name: gorelease check
       run: go run golang.org/x/exp/cmd/gorelease
     - name: Check that git is clean post generate and tests
       run: test -z "$(git status --porcelain)" || (git status; git diff; false)
@@ -66,9 +65,9 @@ jobs:
       fail-fast: false
       matrix:
         go-version:
-        - 1.12.x
         - 1.13.x
-        - 1.14.3
+        - 1.14.9
+        - 1.15.x
         os:
         - ubuntu-latest
         - macos-latest

README.md

@@ -17,7 +17,7 @@
 [![Github](https://github.com/cuelang/cue/workflows/Test/badge.svg)](https://github.com/cuelang/cue/actions)
 [![Go Report Card](https://goreportcard.com/badge/github.com/cuelang/cue)](https://goreportcard.com/report/github.com/cuelang/cue)
 [![GolangCI](https://golangci.com/badges/github.com/cuelang/cue.svg)](https://golangci.com/r/github.com/cuelang/cue)
-[![Go 1.12+](https://img.shields.io/badge/go-1.12-9cf.svg)](https://golang.org/dl/)
+[![Go 1.13+](https://img.shields.io/badge/go-1.13-9cf.svg)](https://golang.org/dl/)
 [![platforms](https://img.shields.io/badge/platforms-linux|windows|macos-inactive.svg)]()
 
 

internal/ci/workflows.cue

@@ -32,13 +32,14 @@ workflows: [
 #job:  ((json.#Workflow & {}).jobs & {x: _}).x
 #step: ((#job & {steps:                  _}).steps & [_])[0]
 
-#latestGo: "1.14.3"
+// We need at least go1.14 for code generation
+#codeGenGo: "1.14.9"
 
 #testStrategy: {
 	"fail-fast": false
 	matrix: {
 		// Use a stable version of 1.14.x for go generate
-		"go-version": ["1.12.x", "1.13.x", #latestGo]
+		"go-version": ["1.13.x", #codeGenGo, "1.15.x"]
 		os: ["ubuntu-latest", "macos-latest", "windows-latest"]
 	}
 }
@@ -70,9 +71,9 @@ workflows: [
 #goGenerate: #step & {
 	name: "Generate"
 	run:  "go generate ./..."
-	// The Go version corresponds to the precise 1.14.x version specified in
+	// The Go version corresponds to the precise version specified in
 	// the matrix. Skip windows for now until we work out why re-gen is flaky
-	if: "matrix.go-version == '\(#latestGo)' && matrix.os != 'windows-latest'"
+	if: "matrix.go-version == '\(#codeGenGo)' && matrix.os != 'windows-latest'"
 }
 
 #goTest: #step & {
@@ -88,9 +89,6 @@ workflows: [
 #goReleaseCheck: #step & {
 	name: "gorelease check"
 	run:  "go run golang.org/x/exp/cmd/gorelease"
-	// Only run on 1.13.x and latest Go for now. Bug with Go 1.12.x means
-	// this check fails
-	if: "matrix.go-version == '\(#latestGo)' || matrix.go-version == '1.13.x'"
 }
 
 #checkGitClean: #step & {