Use mise for sharing versions in CI and local dev (#17)

Currently, versions for Go and related tools (e.g., golangci-lint) are
specified differently for CI and local development. Using mise
allows us to share the same config across environments.

Local development only uses latest, but we also want to test go1.22 on
CI so use mise environments to use a separate config for oldstable.

Start using mise tasks, moving the `lint` target from Makefile to mise.

.github/workflows/go.yml

@@ -14,26 +14,28 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: ['1.22.x', '1.23.x']
+        mise-env: ['oldstable', 'stable']
     env:
-      GO_NOT_LATEST: ${{ matrix.go-version != '1.23.x' }}
+      GO_NOT_LATEST: ${{ matrix.mise-env != 'stable' }}
+      MISE_ENV: ${{ matrix.mise-env }}
 
     steps:
     - uses: actions/checkout@v4
+    - uses: jdx/mise-action@v2
+      with:
+        cache_key_prefix: mise-v0-${{ matrix.mise-env }}
 
-    - name: Set up Go ${{ matrix.go-version }}
+    - name: Set up Go
       uses: actions/setup-go@v5
-      with:
-        go-version: ${{ matrix.go-version }}
 
     - name: Verify Go version
       run: go version
 
     - name: Build
-      run: go build -v ./...
+      run: mise run build
 
     - name: Test
-      run: go test -v ./...
+      run: mise run test
 
     - name: Verify golden files
       if: env.GO_NOT_LATEST == 'false'
@@ -42,12 +44,12 @@ jobs:
   lint:
     name: lint
     runs-on: ubuntu-latest
+    env:
+      MISE_ENV: stable
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
-        with:
-          go-version: 1.23.x
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
-        with:
-          version: v1.63.4
+    - uses: actions/checkout@v4
+    - uses: jdx/mise-action@v2
+      with:
+        cache_key_prefix: mise-v0-stable
+    - name: lint
+      run: mise run lint

.mise.oldstable.toml

@@ -0,0 +1,2 @@
+[tools]
+go = "1.22"

.mise.toml

@@ -0,0 +1,16 @@
+[tools]
+go = "1.23"
+golangci-lint = "v1.63.4"
+
+[tasks.build]
+description = "Build Go packages"
+run = "go build ./..."
+
+[tasks.test]
+description = "Run Go tests"
+run = "go test ./..."
+
+[tasks.lint]
+description = "Run golangci-lint"
+run = "golangci-lint run ./..."
+

Makefile

@@ -28,6 +28,3 @@ diff-testdata::
 endef
 $(foreach d,$(CMP_TEST_DIRS),$(eval $(call cmp_rule,$d)))
 
-.PHONY: lint
-lint:
-	golangci-lint run ./...