Bump actions/checkout from 4 to 5 (#631)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/publish-immutable-actions.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checking out
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Publish
         id: publish
         uses: actions/publish-immutable-action@v0.0.4

.github/workflows/versions.yml

@@ -20,7 +20,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setup Go Stable
         uses: ./
         with:
@@ -35,7 +35,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setup Go oldStable
         uses: ./
         with:
@@ -57,7 +57,7 @@ jobs:
           - os: macos-13
             architecture: x32
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setup Go ${{ matrix.version }} ${{ matrix.architecture }}
         uses: ./
         with:
@@ -82,7 +82,7 @@ jobs:
             go: 1.23.2
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -101,7 +101,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
         go-version: ['1.20', '1.21', '1.22', '1.23']
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -117,7 +117,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -133,7 +133,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -151,7 +151,7 @@ jobs:
         go: [1.20.14, 1.21.10, 1.22.8, 1.23.2]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -171,7 +171,7 @@ jobs:
         go: [1.11.12]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -199,7 +199,7 @@ jobs:
           - os: macos-13
             architecture: x64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setup Go and check latest
         uses: ./
         with:

.github/workflows/windows-validation.yml

@@ -19,7 +19,7 @@ jobs:
         cache: [false, true]
         go: [1.20.1]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: 'Setup ${{ matrix.cache }}, cache: ${{ matrix.go }}'
         uses: ./
@@ -88,7 +88,7 @@ jobs:
       matrix:
         cache: [false, true]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: 'Setup default go, cache: ${{ matrix.cache }}'
         uses: ./
@@ -121,7 +121,7 @@ jobs:
         cache: [false]
         go: [1.20.1]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: 'Setup ${{ matrix.go }}, cache: ${{ matrix.cache }}'
         uses: ./

README.md

@@ -191,9 +191,15 @@ steps:
 
 ## Getting go version from the go.mod file
 
-The `go-version-file` input accepts a path to a `go.mod` file or a `go.work` file that contains the version of Go to be used by a project.
+The `go-version-file` input accepts a path to a `go.mod` file or a `go.work`
+file that contains the version of Go to be used by a project. The version taken
+from thils file will be:
+
+  - The version from the `toolchain` directive, if there is one, otherwise
+  - The version from the `go` directive
+
+The version can specify a patch version or omit it altogether (e.g., `go 1.22.0` or `go 1.22`).
 
-The `go` directive in `go.mod` can specify a patch version or omit it altogether (e.g., `go 1.22.0` or `go 1.22`).  
 If a patch version is specified, that specific patch version will be used.  
 If no patch version is specified, it will search for the latest available patch version in the cache,
 [versions-manifest.json](https://github.com/actions/go-versions/blob/main/versions-manifest.json), and the

__tests__/setup-go.test.ts

@@ -129,6 +129,9 @@ describe('setup-go', () => {
   });
 
   afterEach(() => {
+    // clear out env var set during 'run'
+    delete process.env[im.GOTOOLCHAIN_ENV_VAR];
+
     //jest.resetAllMocks();
     jest.clearAllMocks();
     //jest.restoreAllMocks();
@@ -285,7 +288,7 @@ describe('setup-go', () => {
     expect(logSpy).toHaveBeenCalledWith(`Setup go version spec 1.13.0`);
   });
 
-  it('does not export any variables for Go versions >=1.9', async () => {
+  it('does not export GOROOT for Go versions >=1.9', async () => {
     inputs['go-version'] = '1.13.0';
     inSpy.mockImplementation(name => inputs[name]);
 
@@ -298,7 +301,7 @@ describe('setup-go', () => {
     });
 
     await main.run();
-    expect(vars).toStrictEqual({});
+    expect(vars).not.toHaveProperty('GOROOT');
   });
 
   it('exports GOROOT for Go versions <1.9', async () => {
@@ -314,9 +317,7 @@ describe('setup-go', () => {
     });
 
     await main.run();
-    expect(vars).toStrictEqual({
+    expect(vars).toHaveProperty('GOROOT', toolPath);
-      GOROOT: toolPath
-    });
   });
 
   it('finds a version of go already in the cache', async () => {
@@ -989,4 +990,104 @@ use .
       }
     );
   });
+
+  describe('go-version-file-toolchain', () => {
+    const goVersions = ['1.22.0', '1.21rc2', '1.18'];
+    const placeholderVersion = '1.19';
+    const buildGoMod = (
+      goVersion: string,
+      toolchainVersion: string
+    ) => `module example.com/mymodule
+
+go ${goVersion}
+
+toolchain go${toolchainVersion}
+
+require (
+	example.com/othermodule v1.2.3
+	example.com/thismodule v1.2.3
+	example.com/thatmodule v1.2.3
+)
+
+replace example.com/thatmodule => ../thatmodule
+exclude example.com/thismodule v1.3.0
+`;
+
+    const buildGoWork = (
+      goVersion: string,
+      toolchainVersion: string
+    ) => `go 1.19
+
+toolchain go${toolchainVersion}
+
+use .
+
+`;
+
+    goVersions.forEach(version => {
+      [
+        {
+          goVersionfile: 'go.mod',
+          fileContents: Buffer.from(buildGoMod(placeholderVersion, version)),
+          expected_version: version,
+          desc: 'from toolchain directive'
+        },
+        {
+          goVersionfile: 'go.work',
+          fileContents: Buffer.from(buildGoMod(placeholderVersion, version)),
+          expected_version: version,
+          desc: 'from toolchain directive'
+        },
+        {
+          goVersionfile: 'go.mod',
+          fileContents: Buffer.from(buildGoMod(placeholderVersion, version)),
+          gotoolchain_env: 'local',
+          expected_version: placeholderVersion,
+          desc: 'from go directive when GOTOOLCHAIN is local'
+        },
+        {
+          goVersionfile: 'go.work',
+          fileContents: Buffer.from(buildGoMod(placeholderVersion, version)),
+          gotoolchain_env: 'local',
+          expected_version: placeholderVersion,
+          desc: 'from go directive when GOTOOLCHAIN is local'
+        }
+      ].forEach(test => {
+        it(`reads version (${version}) in ${test.goVersionfile} ${test.desc}`, async () => {
+          inputs['go-version-file'] = test.goVersionfile;
+          if (test.gotoolchain_env !== undefined) {
+            process.env[im.GOTOOLCHAIN_ENV_VAR] = test.gotoolchain_env;
+          }
+          existsSpy.mockImplementation(() => true);
+          readFileSpy.mockImplementation(() => Buffer.from(test.fileContents));
+
+          await main.run();
+
+          expect(logSpy).toHaveBeenCalledWith(
+            `Setup go version spec ${test.expected_version}`
+          );
+          expect(logSpy).toHaveBeenCalledWith(
+            `Attempting to download ${test.expected_version}...`
+          );
+          expect(logSpy).toHaveBeenCalledWith(
+            `matching ${test.expected_version}...`
+          );
+        });
+      });
+    });
+  });
+
+  it('exports GOTOOLCHAIN and sets it in current process env', async () => {
+    inputs['go-version'] = '1.21.0';
+    inSpy.mockImplementation(name => inputs[name]);
+
+    const vars: {[key: string]: string} = {};
+    exportVarSpy.mockImplementation((name: string, val: string) => {
+      vars[name] = val;
+    });
+
+    await main.run();
+    expect(vars).toStrictEqual({GOTOOLCHAIN: 'local'});
+    expect(process.env).toHaveProperty('GOTOOLCHAIN', 'local');
+  });
 });

dist/setup/index.js

@@ -94312,6 +94312,7 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
     return (mod && mod.__esModule) ? mod : { "default": mod };
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
+exports.GOTOOLCHAIN_LOCAL_VAL = exports.GOTOOLCHAIN_ENV_VAR = void 0;
 exports.getGo = getGo;
 exports.extractGoArchive = extractGoArchive;
 exports.getManifest = getManifest;
@@ -94330,6 +94331,8 @@ const sys = __importStar(__nccwpck_require__(5632));
 const fs_1 = __importDefault(__nccwpck_require__(7147));
 const os_1 = __importDefault(__nccwpck_require__(2037));
 const utils_1 = __nccwpck_require__(1314);
+exports.GOTOOLCHAIN_ENV_VAR = 'GOTOOLCHAIN';
+exports.GOTOOLCHAIN_LOCAL_VAL = 'local';
 const MANIFEST_REPO_OWNER = 'actions';
 const MANIFEST_REPO_NAME = 'go-versions';
 const MANIFEST_REPO_BRANCH = 'main';
@@ -94663,8 +94666,18 @@ function parseGoVersionFile(versionFilePath) {
     const contents = fs_1.default.readFileSync(versionFilePath).toString();
     if (path.basename(versionFilePath) === 'go.mod' ||
         path.basename(versionFilePath) === 'go.work') {
-        const match = contents.match(/^go (\d+(\.\d+)*)/m);
+        // for backwards compatibility: use version from go directive if
-        return match ? match[1] : '';
+        // 'GOTOOLCHAIN' has been explicitly set
+        if (process.env[exports.GOTOOLCHAIN_ENV_VAR] !== exports.GOTOOLCHAIN_LOCAL_VAL) {
+            // toolchain directive: https://go.dev/ref/mod#go-mod-file-toolchain
+            const matchToolchain = contents.match(/^toolchain go(1\.\d+(?:\.\d+|rc\d+)?)/m);
+            if (matchToolchain) {
+                return matchToolchain[1];
+            }
+        }
+        // go directive: https://go.dev/ref/mod#go-mod-file-go
+        const matchGo = contents.match(/^go (\d+(\.\d+)*)/m);
+        return matchGo ? matchGo[1] : '';
     }
     return contents.trim();
 }
@@ -94782,6 +94795,7 @@ function run() {
             // If not supplied then problem matchers will still be setup.  Useful for self-hosted.
             //
             const versionSpec = resolveVersionInput();
+            setGoToolchain();
             const cache = core.getBooleanInput('cache');
             core.info(`Setup go version spec ${versionSpec}`);
             let arch = core.getInput('architecture');
@@ -94890,6 +94904,19 @@ function resolveVersionInput() {
     }
     return version;
 }
+function setGoToolchain() {
+    // docs: https://go.dev/doc/toolchain
+    // "local indicates the bundled Go toolchain (the one that shipped with the go command being run)"
+    // this is so any 'go' command is run with the selected Go version
+    // and doesn't trigger a toolchain download and run commands with that
+    // see e.g. issue #424
+    // and a similar discussion: https://github.com/docker-library/golang/issues/472.
+    // Set the value in process env so any `go` commands run as child-process
+    // don't cause toolchain downloads
+    process.env[installer.GOTOOLCHAIN_ENV_VAR] = installer.GOTOOLCHAIN_LOCAL_VAL;
+    // and in the runner env so e.g. a user running `go mod tidy` won't cause it
+    core.exportVariable(installer.GOTOOLCHAIN_ENV_VAR, installer.GOTOOLCHAIN_LOCAL_VAL);
+}
 
 
 /***/ }),

src/installer.ts

@@ -9,6 +9,8 @@ import os from 'os';
 import {StableReleaseAlias, isSelfHosted} from './utils';
 import {Architecture} from './types';
 
+export const GOTOOLCHAIN_ENV_VAR = 'GOTOOLCHAIN';
+export const GOTOOLCHAIN_LOCAL_VAL = 'local';
 const MANIFEST_REPO_OWNER = 'actions';
 const MANIFEST_REPO_NAME = 'go-versions';
 const MANIFEST_REPO_BRANCH = 'main';
@@ -496,8 +498,21 @@ export function parseGoVersionFile(versionFilePath: string): string {
     path.basename(versionFilePath) === 'go.mod' ||
     path.basename(versionFilePath) === 'go.work'
   ) {
-    const match = contents.match(/^go (\d+(\.\d+)*)/m);
+    // for backwards compatibility: use version from go directive if
-    return match ? match[1] : '';
+    // 'GOTOOLCHAIN' has been explicitly set
+    if (process.env[GOTOOLCHAIN_ENV_VAR] !== GOTOOLCHAIN_LOCAL_VAL) {
+      // toolchain directive: https://go.dev/ref/mod#go-mod-file-toolchain
+      const matchToolchain = contents.match(
+        /^toolchain go(1\.\d+(?:\.\d+|rc\d+)?)/m
+      );
+      if (matchToolchain) {
+        return matchToolchain[1];
+      }
+    }
+
+    // go directive: https://go.dev/ref/mod#go-mod-file-go
+    const matchGo = contents.match(/^go (\d+(\.\d+)*)/m);
+    return matchGo ? matchGo[1] : '';
   }
 
   return contents.trim();

src/main.ts

@@ -17,6 +17,7 @@ export async function run() {
     // If not supplied then problem matchers will still be setup.  Useful for self-hosted.
     //
     const versionSpec = resolveVersionInput();
+    setGoToolchain();
 
     const cache = core.getBooleanInput('cache');
     core.info(`Setup go version spec ${versionSpec}`);
@@ -161,3 +162,20 @@ function resolveVersionInput(): string {
 
   return version;
 }
+
+function setGoToolchain() {
+  // docs: https://go.dev/doc/toolchain
+  // "local indicates the bundled Go toolchain (the one that shipped with the go command being run)"
+  // this is so any 'go' command is run with the selected Go version
+  // and doesn't trigger a toolchain download and run commands with that
+  // see e.g. issue #424
+  // and a similar discussion: https://github.com/docker-library/golang/issues/472.
+  // Set the value in process env so any `go` commands run as child-process
+  // don't cause toolchain downloads
+  process.env[installer.GOTOOLCHAIN_ENV_VAR] = installer.GOTOOLCHAIN_LOCAL_VAL;
+  // and in the runner env so e.g. a user running `go mod tidy` won't cause it
+  core.exportVariable(
+    installer.GOTOOLCHAIN_ENV_VAR,
+    installer.GOTOOLCHAIN_LOCAL_VAL
+  );
+}