feat: automatic module directories (#1315)

.github/workflows/test.yml

@@ -146,3 +146,30 @@ jobs:
           version: ${{ matrix.version }}
           working-directory: sample-plugins
           args: --timeout=5m --issues-exit-code=0 ./...
+
+  test-monorepo:
+    needs: [ build ]
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - ubuntu-22.04-arm
+          - macos-latest
+          - windows-latest
+    runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
+      pull-requests: read
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24.x
+      - uses: actions/setup-go@v6
+        with:
+          go-version: oldstable
+      - uses: ./
+        with:
+          working-directory: sample-monorepo
+          experimental: "automatic-module-directories"
+          args: --timeout=5m --issues-exit-code=0 ./...

README.md

@@ -54,9 +54,9 @@ jobs:
         with:
           go-version: stable
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v8
+        uses: golangci/golangci-lint-action@v9
         with:
-          version: v2.1
+          version: v2.6
 ```
 
 </details>
@@ -92,9 +92,9 @@ jobs:
         with:
           go-version: ${{ matrix.go }}
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v8
+        uses: golangci/golangci-lint-action@v9
         with:
-          version: v2.1
+          version: v2.6
 ```
 
 You will also likely need to add the following `.gitattributes` file to ensure that line endings for Windows builds are properly formatted:
@@ -120,7 +120,7 @@ on:
 
 env:
   GO_VERSION: stable
-  GOLANGCI_LINT_VERSION: v2.1
+  GOLANGCI_LINT_VERSION: v2.6
 
 jobs:
   detect-modules:
@@ -147,7 +147,7 @@ jobs:
         with:
           go-version: ${{ env.GO_VERSION }}
       - name: golangci-lint ${{ matrix.modules }}
-        uses: golangci/golangci-lint-action@v8
+        uses: golangci/golangci-lint-action@v9
         with:
           version: ${{ env.GOLANGCI_LINT_VERSION }}
           working-directory: ${{ matrix.modules }}
@@ -179,7 +179,7 @@ jobs:
     with:
       os: ${{ matrix.os }}
       go-version: ${{ matrix.go-version }}
-      golangci-lint-version: v2.1
+      golangci-lint-version: v2.6
 ```
 
 ```yaml
@@ -201,7 +201,7 @@ on:
       golangci-lint-version:
         description: 'Golangci-lint version'
         type: string
-        default: 'v2.1'
+        default: 'v2.6'
 
 jobs:
   detect-modules:
@@ -229,7 +229,7 @@ jobs:
         with:
           go-version: ${{ inputs.go-version }}
       - name: golangci-lint ${{ matrix.modules }}
-        uses: golangci/golangci-lint-action@v8
+        uses: golangci/golangci-lint-action@v9
         with:
           version: ${{ inputs.golangci-lint-version }}
           working-directory: ${{ matrix.modules }}
@@ -259,7 +259,27 @@ You will also likely need to add the following `.gitattributes` file to ensure t
 
 ## Options
 
-### `version`
+### Overview
+
+| Option                                                        | Description                                        |
+|---------------------------------------------------------------|----------------------------------------------------|
+| [`version`](#version)                                         | The version of golangci-lint to use.               |
+| [`install-mode`](#install-mode)                               | The mode to install golangci-lint.                 |
+| [`install-only`](#install-only)                               | Only install golangci-lint.                        |
+| [`verify`](#verify)                                           | Validates golangci-lint configuration file.        |
+| [`github-token`](#github-token)                               | Used by the `only-new-issues` option.              |
+| [`only-new-issues`](#only-new-issues)                         | Show only new issues.                              |
+| [`working-directory`](#working-directory)                     | The golangci-lint working directory.               |
+| [`args`](#args)                                               | Golangci-lint command line arguments.              |
+| [`skip-cache`](#skip-cache)                                   | Disable cache support.                             |
+| [`skip-save-cache`](#skip-save-cache)                         | Don't save cache.                                  |
+| [`cache-invalidation-interval`](#cache-invalidation-interval) | Number of days before cache invalidation.          |
+| [`problem-matchers`](#problem-matchers)                       | Forces the usage of the embedded problem matchers. |
+| [Experimental](#experimental)                                 | Experimental options                               |
+
+### Installation
+
+#### `version`
 
 (optional)
 
@@ -274,15 +294,15 @@ When `install-mode` is:
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
-  version: v2.1
+  version: v2.6
   # ...
 ```
 
 </details>
 
-### `install-mode`
+#### `install-mode`
 
 (optional)
 
@@ -296,7 +316,7 @@ The default value is `binary`.
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
   install-mode: "none"
   # ...
@@ -304,7 +324,7 @@ with:
 
 </details>
 
-### `install-only`
+#### `install-only`
 
 (optional)
 
@@ -317,7 +337,7 @@ The default value is `false`.
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
   install-only: true
   # ...
@@ -325,27 +345,9 @@ with:
 
 </details>
 
-### `github-token`
+### Run
 
-(optional)
+#### `verify`
-
-When using the `only-new-issues` option, the GitHub API is used, so a token is required.
-
-By default, it uses the `github.token` from the action.
-
-<details>
-<summary>Example</summary>
-
-```yml
-uses: golangci/golangci-lint-action@v8
-with:
-  github-token: xxx
-  # ...
-```
-
-</details>
-
-### `verify`
 
 (optional)
 
@@ -360,7 +362,7 @@ The JSON Schema used to validate the configuration depends on the version of gol
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
   verify: false
   # ...
@@ -368,7 +370,27 @@ with:
 
 </details>
 
-### `only-new-issues`
+#### `github-token`
+
+(optional)
+
+When using the `only-new-issues` option, the GitHub API is used, so a token is required.
+
+By default, it uses the `github.token` from the action.
+
+<details>
+<summary>Example</summary>
+
+```yml
+uses: golangci/golangci-lint-action@v9
+with:
+  github-token: xxx
+  # ...
+```
+
+</details>
+
+#### `only-new-issues`
 
 (optional)
 
@@ -385,7 +407,7 @@ The default value is `false`.
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
   only-new-issues: true
   # ...
@@ -393,7 +415,7 @@ with:
 
 </details>
 
-### `working-directory`
+#### `working-directory`
 
 (optional)
 
@@ -403,7 +425,7 @@ The golangci-lint working directory, useful for monorepos. The default is the pr
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
   working-directory: somedir
   # ...
@@ -411,7 +433,7 @@ with:
 
 </details>
 
-### `args`
+#### `args`
 
 (optional)
 
@@ -428,7 +450,7 @@ golangci-lint command line arguments.
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
   # In some rare cases,
   # you may need to use `${{ github.workspace }}` as the base directory to reference your configuration file.
@@ -438,7 +460,74 @@ with:
 
 </details>
 
-### `problem-matchers`
+### Cache
+
+#### `skip-cache`
+
+(optional)
+
+If set to `true`, all caching functionality will be completely disabled.
+This takes precedence over all other caching options.
+
+The default value is `false`.
+
+<details>
+<summary>Example</summary>
+
+```yml
+uses: golangci/golangci-lint-action@v9
+with:
+  skip-cache: true
+  # ...
+```
+
+</details>
+
+#### `skip-save-cache`
+
+(optional)
+
+If set to `true`, caches will not be saved, but they may still be restored, requiring `skip-cache: false`.
+
+The default value is `false`.
+
+<details>
+<summary>Example</summary>
+
+```yml
+uses: golangci/golangci-lint-action@v9
+with:
+  skip-save-cache: true
+  # ...
+```
+
+</details>
+
+#### `cache-invalidation-interval`
+
+(optional)
+
+Periodically invalidate a cache every `cache-invalidation-interval` days to ensure that outdated data is removed and fresh data is loaded.
+
+The default value is `7`.
+
+If the number is `<= 0`, the cache will always be invalidated (not recommended).
+
+<details>
+<summary>Example</summary>
+
+```yml
+uses: golangci/golangci-lint-action@v9
+with:
+  cache-invalidation-interval: 15
+  # ...
+```
+
+</details>
+
+### Extra
+
+#### `problem-matchers`
 
 (optional)
 
@@ -456,7 +545,7 @@ The default value is `false`.
 <summary>Example</summary>
 
 ```yml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
   problem-matchers: true
   # ...
@@ -464,65 +553,43 @@ with:
 
 </details>
 
-### `skip-cache`
+### Experimental
 
-(optional)
+The following options are experimental: those may or may not be supported in the future, and so they will be either converted into a dedicated option or removed.
 
-If set to `true`, all caching functionality will be completely disabled.
+List of comma-separated options.
-This takes precedence over all other caching options.
-
-The default value is `false`.
 
 <details>
 <summary>Example</summary>
 
-```yml
+```yaml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
-  skip-cache: true
+  experimental: "foo,bar"
-  # ...
 ```
 
 </details>
 
-### `skip-save-cache`
+#### `automatic-module-directories`
 
 (optional)
 
-If set to `true`, caches will not be saved, but they may still be restored, requiring `skip-cache: false`.
+This option will run golangci-lint in each module directory, useful for monorepos.
 
-The default value is `false`.
+The automatic detection of modules uses the `working-directory` as the base directory if defined, otherwise the root directory.
+
+> [!IMPORTANT]
+> - The cache key will refer to the `working-directory` (if defined) because all the golangci-lint runs must use the same cache directory/key.
+> - The version detection will only work if the project has a single module.
+> - If the project has multiple modules, the custom build file must be located in the repository root ( or `working-directory`).
 
 <details>
 <summary>Example</summary>
 
-```yml
+```yaml
-uses: golangci/golangci-lint-action@v8
+uses: golangci/golangci-lint-action@v9
 with:
-  skip-save-cache: true
+  experimental: "automatic-module-directories"
-  # ...
-```
-
-</details>
-
-### `cache-invalidation-interval`
-
-(optional)
-
-Periodically invalidate a cache every `cache-invalidation-interval` days to ensure that outdated data is removed and fresh data is loaded.
-
-The default value is `7`.
-
-If the number is `<= 0`, the cache will always be invalidated (not recommended).
-
-<details>
-<summary>Example</summary>
-
-```yml
-uses: golangci/golangci-lint-action@v8
-with:
-  cache-invalidation-interval: 15
-  # ...
 ```
 
 </details>

action.yml

@@ -34,6 +34,10 @@ inputs:
     description: "If set to true and the action runs on a pull request, the action outputs only newly found issues."
     default: 'false'
     required: false
+  args:
+    description: "golangci-lint command line arguments."
+    default: ""
+    required: false
   skip-cache:
     description: |
       If set to true, all caching functionality will be completely disabled.
@@ -42,21 +46,30 @@ inputs:
     required: false
   skip-save-cache:
     description: |
-      If set to true, the action will not save any caches, but it may still
+      If set to true, the action will not save any caches,
-      restore existing caches, subject to other options.
+      but it may still restore existing caches, subject to other options.
     default: 'false'
     required: false
+  cache-invalidation-interval:
+    description: "Periodically invalidate a cache when new code is added (number of days)."
+    default: '7'
+    required: false
   problem-matchers:
     description: "Force the usage of the embedded problem matchers."
     default: 'false'
     required: false
-  args:
+  debug:
-    description: "golangci-lint command line arguments."
+    description: |
+      Debug options for the action.
+      List of comma separated options, the values are `cache`, `clean`.
+      example: "cache,clean"
     default: ""
     required: false
-  cache-invalidation-interval:
+  experimental:
-    description: "Periodically invalidate a cache when new code is added (number of days)."
+    description: |
-    default: '7'
+      Experimental options for the action.
+      List of comma separated options.
+    default: ""
     required: false
 runs:
   using: "node24"

dist/post_run/index.js

@@ -96844,8 +96844,10 @@ async function buildCacheKeys() {
     return keys;
 }
 async function restoreCache() {
-    if (core.getBooleanInput(`skip-cache`, { required: true }))
+    if (core.getBooleanInput(`skip-cache`, { required: true })) {
+        core.info(`Skipping cache restoration`);
         return;
+    }
     if (!utils.isValidEvent()) {
         utils.logWarning(`Event Validation Error: The event type ${process.env[constants_1.Events.Key]} is not supported because it's not tied to a branch or tag ref.`);
         return;
@@ -96881,10 +96883,14 @@ async function restoreCache() {
     }
 }
 async function saveCache() {
-    if (core.getBooleanInput(`skip-cache`, { required: true }))
+    if (core.getBooleanInput(`skip-cache`, { required: true })) {
+        core.info(`Skipping cache saving`);
         return;
-    if (core.getBooleanInput(`skip-save-cache`, { required: true }))
+    }
+    if (core.getBooleanInput(`skip-save-cache`, { required: true })) {
+        core.info(`Skipping cache saving`);
         return;
+    }
     // Validate inputs, this can cause task failure
     if (!utils.isValidEvent()) {
         utils.logWarning(`Event Validation Error: The event type ${process.env[constants_1.Events.Key]} is not supported because it's not tied to a branch or tag ref.`);
@@ -96999,12 +97005,13 @@ exports.installBinary = installBinary;
 const core = __importStar(__nccwpck_require__(37484));
 const tc = __importStar(__nccwpck_require__(33472));
 const child_process_1 = __nccwpck_require__(35317);
+const fs_1 = __importDefault(__nccwpck_require__(79896));
 const os_1 = __importDefault(__nccwpck_require__(70857));
 const path_1 = __importDefault(__nccwpck_require__(16928));
 const util_1 = __nccwpck_require__(39023);
 const which_1 = __importDefault(__nccwpck_require__(11189));
 const version_1 = __nccwpck_require__(311);
-const execShellCommand = (0, util_1.promisify)(child_process_1.exec);
+const execCommand = (0, util_1.promisify)(child_process_1.exec);
 var InstallMode;
 (function (InstallMode) {
     InstallMode["Binary"] = "binary";
@@ -97018,6 +97025,7 @@ const printOutput = (res) => {
     if (res.stderr) {
         core.info(res.stderr);
     }
+    return res;
 };
 /**
  * Install golangci-lint.
@@ -97025,6 +97033,15 @@ const printOutput = (res) => {
  * @returns             path to installed binary of golangci-lint.
  */
 async function install() {
+    const problemMatchers = core.getBooleanInput(`problem-matchers`);
+    if (problemMatchers) {
+        const matchersPath = path_1.default.join(__dirname, "../..", "problem-matchers.json");
+        if (fs_1.default.existsSync(matchersPath)) {
+            // Adds problem matchers.
+            // https://github.com/actions/setup-go/blob/cdcb36043654635271a94b9a6d1392de5bb323a7/src/main.ts#L81-L83
+            core.info(`##[add-matcher]${matchersPath}`);
+        }
+    }
     const mode = core.getInput("install-mode").toLowerCase();
     if (mode === InstallMode.None) {
         const binPath = await (0, which_1.default)("golangci-lint", { nothrow: true });
@@ -97064,10 +97081,8 @@ async function goInstall(versionInfo) {
     core.info(`Installing golangci-lint ${versionInfo.TargetVersion}...`);
     const startedAt = Date.now();
     const options = { env: { ...process.env, CGO_ENABLED: "1" } };
-    const exres = await execShellCommand(`go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options);
+    await execCommand(`go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options).then(printOutput);
-    printOutput(exres);
+    const res = await execCommand(`go install -n github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options).then(printOutput);
-    const res = await execShellCommand(`go install -n github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options);
-    printOutput(res);
     // The output of `go install -n` when the binary is already installed is `touch <path_to_the_binary>`.
     const binPath = res.stderr
         .split(/\r?\n/)
@@ -97196,9 +97211,6 @@ function isOnlyNewIssues() {
     return core.getBooleanInput(`only-new-issues`, { required: true });
 }
 async function fetchPatch() {
-    if (!isOnlyNewIssues()) {
-        return ``;
-    }
     const ctx = github.context;
     switch (ctx.eventName) {
         case `pull_request`:
@@ -97242,8 +97254,7 @@ async function fetchPullRequestPatch(ctx) {
         return ``; // don't fail the action, but analyze without patch
     }
     try {
-        const tempDir = await createTempDir();
+        const patchPath = await createTempDir().then((tempDir) => path_1.default.join(tempDir, "pull.patch"));
-        const patchPath = path_1.default.join(tempDir, "pull.patch");
         core.info(`Writing patch to ${patchPath}`);
         await writeFile(patchPath, (0, diffUtils_1.alterDiffPatch)(patch));
         return patchPath;
@@ -97277,8 +97288,7 @@ async function fetchPushPatch(ctx) {
         return ``; // don't fail the action, but analyze without patch
     }
     try {
-        const tempDir = await createTempDir();
+        const patchPath = await createTempDir().then((tempDir) => path_1.default.join(tempDir, "push.patch"));
-        const patchPath = path_1.default.join(tempDir, "push.patch");
         core.info(`Writing patch to ${patchPath}`);
         await writeFile(patchPath, (0, diffUtils_1.alterDiffPatch)(patch));
         return patchPath;
@@ -97341,7 +97351,7 @@ const fs = __importStar(__nccwpck_require__(79896));
 const path = __importStar(__nccwpck_require__(16928));
 const util_1 = __nccwpck_require__(39023);
 const yaml_1 = __importDefault(__nccwpck_require__(38815));
-const execShellCommand = (0, util_1.promisify)(child_process_1.exec);
+const execCommand = (0, util_1.promisify)(child_process_1.exec);
 const printOutput = (res) => {
     if (res.stdout) {
         core.info(res.stdout);
@@ -97361,11 +97371,12 @@ async function install(binPath) {
     else {
         rootDir = process.cwd();
     }
-    const configFile = [".custom-gcl.yml", ".custom-gcl.yaml", ".custom-gcl.json"]
+    const configFile = ["yml", "yaml", "json"]
-        .map((v) => path.join(rootDir, v))
+        .map((ext) => `.custom-gcl.${ext}`)
+        .map((filename) => path.join(rootDir, filename))
         .find((filePath) => fs.existsSync(filePath));
     if (!configFile || configFile === "") {
-        return "";
+        return binPath;
     }
     core.info(`Found configuration for the plugin module system : ${configFile}`);
     core.info(`Building and installing custom golangci-lint binary...`);
@@ -97373,7 +97384,7 @@ async function install(binPath) {
     const config = yaml_1.default.parse(fs.readFileSync(configFile, "utf-8"));
     const v = core.getInput(`version`);
     if (v !== "" && config.version !== v) {
-        core.warning(`The golangci-lint version (${config.version}) defined inside in ${configFile} does not match the version defined in the action (${v})`);
+        core.warning(`The golangci-lint version (${config.version}) defined inside ${configFile} does not match the version defined in the action (${v})`);
     }
     if (!config.destination) {
         config.destination = ".";
@@ -97387,18 +97398,16 @@ async function install(binPath) {
     }
     const cmd = `${binPath} custom`;
     core.info(`Running [${cmd}] in [${rootDir}] ...`);
-    try {
+    const options = {
-        const options = {
+        cwd: rootDir,
-            cwd: rootDir,
+    };
-        };
+    return execCommand(cmd, options)
-        const res = await execShellCommand(cmd, options);
+        .then(printOutput)
-        printOutput(res);
+        .then(() => core.info(`Built custom golangci-lint binary in ${Date.now() - startedAt}ms`))
-        core.info(`Built custom golangci-lint binary in ${Date.now() - startedAt}ms`);
+        .then(() => path.join(rootDir, config.destination, config.name))
-        return path.join(rootDir, config.destination, config.name);
+        .catch((exc) => {
-    }
-    catch (exc) {
         throw new Error(`Failed to build custom golangci-lint binary: ${exc.message}`);
-    }
+    });
 }
 
 
@@ -97455,24 +97464,7 @@ const cache_1 = __nccwpck_require__(97377);
 const install_1 = __nccwpck_require__(90232);
 const patch_1 = __nccwpck_require__(47161);
 const plugins = __importStar(__nccwpck_require__(96067));
-const execShellCommand = (0, util_1.promisify)(child_process_1.exec);
+const execCommand = (0, util_1.promisify)(child_process_1.exec);
-async function prepareEnv(installOnly) {
-    const startedAt = Date.now();
-    // Prepare cache, lint and go in parallel.
-    await (0, cache_1.restoreCache)();
-    let binPath = await (0, install_1.install)();
-    // Build custom golangci-lint if needed.
-    const customBinPath = await plugins.install(binPath);
-    if (customBinPath !== "") {
-        binPath = customBinPath;
-    }
-    if (installOnly) {
-        return { binPath, patchPath: `` };
-    }
-    const patchPath = await (0, patch_1.fetchPatch)();
-    core.info(`Prepared env in ${Date.now() - startedAt}ms`);
-    return { binPath, patchPath };
-}
 const printOutput = (res) => {
     if (res.stdout) {
         core.info(res.stdout);
@@ -97481,12 +97473,7 @@ const printOutput = (res) => {
         core.info(res.stderr);
     }
 };
-async function runLint(binPath, patchPath) {
+async function runGolangciLint(binPath, rootDir) {
-    const debug = core.getInput(`debug`);
-    if (debug.split(`,`).includes(`cache`)) {
-        const res = await execShellCommand(`${binPath} cache status`);
-        printOutput(res);
-    }
     const userArgs = core.getInput(`args`);
     const addedArgs = [];
     const userArgsList = userArgs
@@ -97498,15 +97485,6 @@ async function runLint(binPath, patchPath) {
         .map(([key, value]) => [key.toLowerCase(), value ?? ""]);
     const userArgsMap = new Map(userArgsList);
     const userArgNames = new Set(userArgsList.map(([key]) => key));
-    const problemMatchers = core.getBooleanInput(`problem-matchers`);
-    if (problemMatchers) {
-        const matchersPath = path.join(__dirname, "../..", "problem-matchers.json");
-        if (fs.existsSync(matchersPath)) {
-            // Adds problem matchers.
-            // https://github.com/actions/setup-go/blob/cdcb36043654635271a94b9a6d1392de5bb323a7/src/main.ts#L81-L83
-            core.info(`##[add-matcher]${matchersPath}`);
-        }
-    }
     if ((0, patch_1.isOnlyNewIssues)()) {
         if (userArgNames.has(`new`) ||
             userArgNames.has(`new-from-rev`) ||
@@ -97515,6 +97493,7 @@ async function runLint(binPath, patchPath) {
             throw new Error(`please, don't specify manually --new* args when requesting only new issues`);
         }
         const ctx = github.context;
+        const patchPath = await (0, patch_1.fetchPatch)();
         core.info(`only new issues on ${ctx.eventName}: ${patchPath}`);
         switch (ctx.eventName) {
             case `pull_request`:
@@ -97540,27 +97519,21 @@ async function runLint(binPath, patchPath) {
         }
     }
     const cmdArgs = {};
-    const workingDirectory = core.getInput(`working-directory`);
+    if (rootDir) {
-    if (workingDirectory) {
-        if (!fs.existsSync(workingDirectory) || !fs.lstatSync(workingDirectory).isDirectory()) {
-            throw new Error(`working-directory (${workingDirectory}) was not a path`);
-        }
         if (!userArgNames.has(`path-prefix`) && !userArgNames.has(`path-mode`)) {
             addedArgs.push(`--path-mode=abs`);
         }
-        cmdArgs.cwd = path.resolve(workingDirectory);
+        cmdArgs.cwd = path.resolve(rootDir);
     }
     await runVerify(binPath, userArgsMap, cmdArgs);
     const cmd = `${binPath} run ${addedArgs.join(` `)} ${userArgs}`.trimEnd();
     core.info(`Running [${cmd}] in [${cmdArgs.cwd || process.cwd()}] ...`);
     const startedAt = Date.now();
-    try {
+    return execCommand(cmd, cmdArgs)
-        const res = await execShellCommand(cmd, cmdArgs);
+        .then(printOutput)
-        printOutput(res);
+        .then(() => core.info(`golangci-lint found no issues`))
-        core.info(`golangci-lint found no issues`);
+        .catch((exc) => {
-    }
+        // This logging passes issues to GitHub annotations.
-    catch (exc) {
-        // This logging passes issues to GitHub annotations but comments can be more convenient for some users.
         printOutput(exc);
         if (exc.code === 1) {
             core.setFailed(`issues found`);
@@ -97568,8 +97541,8 @@ async function runLint(binPath, patchPath) {
         else {
             core.setFailed(`golangci-lint exit with code ${exc.code}`);
         }
-    }
+    })
-    core.info(`Ran golangci-lint in ${Date.now() - startedAt}ms`);
+        .finally(() => core.info(`Ran golangci-lint in ${Date.now() - startedAt}ms`));
 }
 async function runVerify(binPath, userArgsMap, cmdArgs) {
     const verify = core.getBooleanInput(`verify`, { required: true });
@@ -97585,8 +97558,7 @@ async function runVerify(binPath, userArgsMap, cmdArgs) {
         cmdVerify += ` --config=${userArgsMap.get("config")}`;
     }
     core.info(`Running [${cmdVerify}] in [${cmdArgs.cwd || process.cwd()}] ...`);
-    const res = await execShellCommand(cmdVerify, cmdArgs);
+    await execCommand(cmdVerify, cmdArgs).then(printOutput);
-    printOutput(res);
 }
 async function getConfigPath(binPath, userArgsMap, cmdArgs) {
     let cmdConfigPath = `${binPath} config path`;
@@ -97595,22 +97567,73 @@ async function getConfigPath(binPath, userArgsMap, cmdArgs) {
     }
     core.info(`Running [${cmdConfigPath}] in [${cmdArgs.cwd || process.cwd()}] ...`);
     try {
-        const resPath = await execShellCommand(cmdConfigPath, cmdArgs);
+        const resPath = await execCommand(cmdConfigPath, cmdArgs);
         return resPath.stderr.trim();
     }
     catch {
         return ``;
     }
 }
+async function debugAction(binPath) {
+    const flags = core.getInput(`debug`).split(`,`);
+    if (flags.includes(`clean`)) {
+        const cmd = `${binPath} cache clean`;
+        core.info(`Running [${cmd}] ...`);
+        await execCommand(cmd).then(printOutput);
+    }
+    if (flags.includes(`cache`)) {
+        const cmd = `${binPath} cache status`;
+        core.info(`Running [${cmd}] ...`);
+        await execCommand(cmd).then(printOutput);
+    }
+}
+function getWorkingDirectory() {
+    const workingDirectory = core.getInput(`working-directory`);
+    if (workingDirectory) {
+        if (!fs.existsSync(workingDirectory) || !fs.lstatSync(workingDirectory).isDirectory()) {
+            throw new Error(`working-directory (${workingDirectory}) was not a path`);
+        }
+    }
+    return workingDirectory;
+}
+function modulesAutoDetection(rootDir) {
+    const o = {
+        cwd: rootDir,
+        exclude: ["**/vendor/**", "**/node_modules/**", "**/.git/**", "**/dist/**"],
+    };
+    const matches = fs.globSync("**/go.mod", o);
+    const dirs = matches
+        .filter((m) => typeof m === "string")
+        .map((m) => path.resolve(rootDir, path.dirname(m)))
+        .sort();
+    return [...new Set(dirs)];
+}
+async function runLint(binPath) {
+    const workingDirectory = getWorkingDirectory();
+    const experimental = core.getInput(`experimental`).split(`,`);
+    if (experimental.includes(`automatic-module-directories`)) {
+        const wds = modulesAutoDetection(workingDirectory);
+        const cwd = process.cwd();
+        for (const wd of wds) {
+            await core.group(`run golangci-lint in ${path.relative(cwd, wd)}`, () => runGolangciLint(binPath, wd));
+        }
+        return;
+    }
+    await core.group(`run golangci-lint`, () => runGolangciLint(binPath, workingDirectory));
+}
 async function run() {
     try {
-        const installOnly = core.getBooleanInput(`install-only`, { required: true });
+        await core.group(`Restore cache`, cache_1.restoreCache);
-        const { binPath, patchPath } = await core.group(`prepare environment`, () => prepareEnv(installOnly));
+        const binPath = await core.group(`Install`, () => (0, install_1.install)().then(plugins.install));
         core.addPath(path.dirname(binPath));
+        if (core.getInput(`debug`)) {
+            await core.group(`Debug`, () => debugAction(binPath));
+        }
+        const installOnly = core.getBooleanInput(`install-only`, { required: true });
         if (installOnly) {
             return;
         }
-        await core.group(`run golangci-lint`, () => runLint(binPath, patchPath));
+        await runLint(binPath);
     }
     catch (error) {
         core.error(`Failed to run: ${error}, ${error.stack}`);

dist/run/index.js

@@ -96844,8 +96844,10 @@ async function buildCacheKeys() {
     return keys;
 }
 async function restoreCache() {
-    if (core.getBooleanInput(`skip-cache`, { required: true }))
+    if (core.getBooleanInput(`skip-cache`, { required: true })) {
+        core.info(`Skipping cache restoration`);
         return;
+    }
     if (!utils.isValidEvent()) {
         utils.logWarning(`Event Validation Error: The event type ${process.env[constants_1.Events.Key]} is not supported because it's not tied to a branch or tag ref.`);
         return;
@@ -96881,10 +96883,14 @@ async function restoreCache() {
     }
 }
 async function saveCache() {
-    if (core.getBooleanInput(`skip-cache`, { required: true }))
+    if (core.getBooleanInput(`skip-cache`, { required: true })) {
+        core.info(`Skipping cache saving`);
         return;
-    if (core.getBooleanInput(`skip-save-cache`, { required: true }))
+    }
+    if (core.getBooleanInput(`skip-save-cache`, { required: true })) {
+        core.info(`Skipping cache saving`);
         return;
+    }
     // Validate inputs, this can cause task failure
     if (!utils.isValidEvent()) {
         utils.logWarning(`Event Validation Error: The event type ${process.env[constants_1.Events.Key]} is not supported because it's not tied to a branch or tag ref.`);
@@ -96999,12 +97005,13 @@ exports.installBinary = installBinary;
 const core = __importStar(__nccwpck_require__(37484));
 const tc = __importStar(__nccwpck_require__(33472));
 const child_process_1 = __nccwpck_require__(35317);
+const fs_1 = __importDefault(__nccwpck_require__(79896));
 const os_1 = __importDefault(__nccwpck_require__(70857));
 const path_1 = __importDefault(__nccwpck_require__(16928));
 const util_1 = __nccwpck_require__(39023);
 const which_1 = __importDefault(__nccwpck_require__(11189));
 const version_1 = __nccwpck_require__(311);
-const execShellCommand = (0, util_1.promisify)(child_process_1.exec);
+const execCommand = (0, util_1.promisify)(child_process_1.exec);
 var InstallMode;
 (function (InstallMode) {
     InstallMode["Binary"] = "binary";
@@ -97018,6 +97025,7 @@ const printOutput = (res) => {
     if (res.stderr) {
         core.info(res.stderr);
     }
+    return res;
 };
 /**
  * Install golangci-lint.
@@ -97025,6 +97033,15 @@ const printOutput = (res) => {
  * @returns             path to installed binary of golangci-lint.
  */
 async function install() {
+    const problemMatchers = core.getBooleanInput(`problem-matchers`);
+    if (problemMatchers) {
+        const matchersPath = path_1.default.join(__dirname, "../..", "problem-matchers.json");
+        if (fs_1.default.existsSync(matchersPath)) {
+            // Adds problem matchers.
+            // https://github.com/actions/setup-go/blob/cdcb36043654635271a94b9a6d1392de5bb323a7/src/main.ts#L81-L83
+            core.info(`##[add-matcher]${matchersPath}`);
+        }
+    }
     const mode = core.getInput("install-mode").toLowerCase();
     if (mode === InstallMode.None) {
         const binPath = await (0, which_1.default)("golangci-lint", { nothrow: true });
@@ -97064,10 +97081,8 @@ async function goInstall(versionInfo) {
     core.info(`Installing golangci-lint ${versionInfo.TargetVersion}...`);
     const startedAt = Date.now();
     const options = { env: { ...process.env, CGO_ENABLED: "1" } };
-    const exres = await execShellCommand(`go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options);
+    await execCommand(`go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options).then(printOutput);
-    printOutput(exres);
+    const res = await execCommand(`go install -n github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options).then(printOutput);
-    const res = await execShellCommand(`go install -n github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options);
-    printOutput(res);
     // The output of `go install -n` when the binary is already installed is `touch <path_to_the_binary>`.
     const binPath = res.stderr
         .split(/\r?\n/)
@@ -97196,9 +97211,6 @@ function isOnlyNewIssues() {
     return core.getBooleanInput(`only-new-issues`, { required: true });
 }
 async function fetchPatch() {
-    if (!isOnlyNewIssues()) {
-        return ``;
-    }
     const ctx = github.context;
     switch (ctx.eventName) {
         case `pull_request`:
@@ -97242,8 +97254,7 @@ async function fetchPullRequestPatch(ctx) {
         return ``; // don't fail the action, but analyze without patch
     }
     try {
-        const tempDir = await createTempDir();
+        const patchPath = await createTempDir().then((tempDir) => path_1.default.join(tempDir, "pull.patch"));
-        const patchPath = path_1.default.join(tempDir, "pull.patch");
         core.info(`Writing patch to ${patchPath}`);
         await writeFile(patchPath, (0, diffUtils_1.alterDiffPatch)(patch));
         return patchPath;
@@ -97277,8 +97288,7 @@ async function fetchPushPatch(ctx) {
         return ``; // don't fail the action, but analyze without patch
     }
     try {
-        const tempDir = await createTempDir();
+        const patchPath = await createTempDir().then((tempDir) => path_1.default.join(tempDir, "push.patch"));
-        const patchPath = path_1.default.join(tempDir, "push.patch");
         core.info(`Writing patch to ${patchPath}`);
         await writeFile(patchPath, (0, diffUtils_1.alterDiffPatch)(patch));
         return patchPath;
@@ -97341,7 +97351,7 @@ const fs = __importStar(__nccwpck_require__(79896));
 const path = __importStar(__nccwpck_require__(16928));
 const util_1 = __nccwpck_require__(39023);
 const yaml_1 = __importDefault(__nccwpck_require__(38815));
-const execShellCommand = (0, util_1.promisify)(child_process_1.exec);
+const execCommand = (0, util_1.promisify)(child_process_1.exec);
 const printOutput = (res) => {
     if (res.stdout) {
         core.info(res.stdout);
@@ -97361,11 +97371,12 @@ async function install(binPath) {
     else {
         rootDir = process.cwd();
     }
-    const configFile = [".custom-gcl.yml", ".custom-gcl.yaml", ".custom-gcl.json"]
+    const configFile = ["yml", "yaml", "json"]
-        .map((v) => path.join(rootDir, v))
+        .map((ext) => `.custom-gcl.${ext}`)
+        .map((filename) => path.join(rootDir, filename))
         .find((filePath) => fs.existsSync(filePath));
     if (!configFile || configFile === "") {
-        return "";
+        return binPath;
     }
     core.info(`Found configuration for the plugin module system : ${configFile}`);
     core.info(`Building and installing custom golangci-lint binary...`);
@@ -97373,7 +97384,7 @@ async function install(binPath) {
     const config = yaml_1.default.parse(fs.readFileSync(configFile, "utf-8"));
     const v = core.getInput(`version`);
     if (v !== "" && config.version !== v) {
-        core.warning(`The golangci-lint version (${config.version}) defined inside in ${configFile} does not match the version defined in the action (${v})`);
+        core.warning(`The golangci-lint version (${config.version}) defined inside ${configFile} does not match the version defined in the action (${v})`);
     }
     if (!config.destination) {
         config.destination = ".";
@@ -97387,18 +97398,16 @@ async function install(binPath) {
     }
     const cmd = `${binPath} custom`;
     core.info(`Running [${cmd}] in [${rootDir}] ...`);
-    try {
+    const options = {
-        const options = {
+        cwd: rootDir,
-            cwd: rootDir,
+    };
-        };
+    return execCommand(cmd, options)
-        const res = await execShellCommand(cmd, options);
+        .then(printOutput)
-        printOutput(res);
+        .then(() => core.info(`Built custom golangci-lint binary in ${Date.now() - startedAt}ms`))
-        core.info(`Built custom golangci-lint binary in ${Date.now() - startedAt}ms`);
+        .then(() => path.join(rootDir, config.destination, config.name))
-        return path.join(rootDir, config.destination, config.name);
+        .catch((exc) => {
-    }
-    catch (exc) {
         throw new Error(`Failed to build custom golangci-lint binary: ${exc.message}`);
-    }
+    });
 }
 
 
@@ -97455,24 +97464,7 @@ const cache_1 = __nccwpck_require__(97377);
 const install_1 = __nccwpck_require__(90232);
 const patch_1 = __nccwpck_require__(47161);
 const plugins = __importStar(__nccwpck_require__(96067));
-const execShellCommand = (0, util_1.promisify)(child_process_1.exec);
+const execCommand = (0, util_1.promisify)(child_process_1.exec);
-async function prepareEnv(installOnly) {
-    const startedAt = Date.now();
-    // Prepare cache, lint and go in parallel.
-    await (0, cache_1.restoreCache)();
-    let binPath = await (0, install_1.install)();
-    // Build custom golangci-lint if needed.
-    const customBinPath = await plugins.install(binPath);
-    if (customBinPath !== "") {
-        binPath = customBinPath;
-    }
-    if (installOnly) {
-        return { binPath, patchPath: `` };
-    }
-    const patchPath = await (0, patch_1.fetchPatch)();
-    core.info(`Prepared env in ${Date.now() - startedAt}ms`);
-    return { binPath, patchPath };
-}
 const printOutput = (res) => {
     if (res.stdout) {
         core.info(res.stdout);
@@ -97481,12 +97473,7 @@ const printOutput = (res) => {
         core.info(res.stderr);
     }
 };
-async function runLint(binPath, patchPath) {
+async function runGolangciLint(binPath, rootDir) {
-    const debug = core.getInput(`debug`);
-    if (debug.split(`,`).includes(`cache`)) {
-        const res = await execShellCommand(`${binPath} cache status`);
-        printOutput(res);
-    }
     const userArgs = core.getInput(`args`);
     const addedArgs = [];
     const userArgsList = userArgs
@@ -97498,15 +97485,6 @@ async function runLint(binPath, patchPath) {
         .map(([key, value]) => [key.toLowerCase(), value ?? ""]);
     const userArgsMap = new Map(userArgsList);
     const userArgNames = new Set(userArgsList.map(([key]) => key));
-    const problemMatchers = core.getBooleanInput(`problem-matchers`);
-    if (problemMatchers) {
-        const matchersPath = path.join(__dirname, "../..", "problem-matchers.json");
-        if (fs.existsSync(matchersPath)) {
-            // Adds problem matchers.
-            // https://github.com/actions/setup-go/blob/cdcb36043654635271a94b9a6d1392de5bb323a7/src/main.ts#L81-L83
-            core.info(`##[add-matcher]${matchersPath}`);
-        }
-    }
     if ((0, patch_1.isOnlyNewIssues)()) {
         if (userArgNames.has(`new`) ||
             userArgNames.has(`new-from-rev`) ||
@@ -97515,6 +97493,7 @@ async function runLint(binPath, patchPath) {
             throw new Error(`please, don't specify manually --new* args when requesting only new issues`);
         }
         const ctx = github.context;
+        const patchPath = await (0, patch_1.fetchPatch)();
         core.info(`only new issues on ${ctx.eventName}: ${patchPath}`);
         switch (ctx.eventName) {
             case `pull_request`:
@@ -97540,27 +97519,21 @@ async function runLint(binPath, patchPath) {
         }
     }
     const cmdArgs = {};
-    const workingDirectory = core.getInput(`working-directory`);
+    if (rootDir) {
-    if (workingDirectory) {
-        if (!fs.existsSync(workingDirectory) || !fs.lstatSync(workingDirectory).isDirectory()) {
-            throw new Error(`working-directory (${workingDirectory}) was not a path`);
-        }
         if (!userArgNames.has(`path-prefix`) && !userArgNames.has(`path-mode`)) {
             addedArgs.push(`--path-mode=abs`);
         }
-        cmdArgs.cwd = path.resolve(workingDirectory);
+        cmdArgs.cwd = path.resolve(rootDir);
     }
     await runVerify(binPath, userArgsMap, cmdArgs);
     const cmd = `${binPath} run ${addedArgs.join(` `)} ${userArgs}`.trimEnd();
     core.info(`Running [${cmd}] in [${cmdArgs.cwd || process.cwd()}] ...`);
     const startedAt = Date.now();
-    try {
+    return execCommand(cmd, cmdArgs)
-        const res = await execShellCommand(cmd, cmdArgs);
+        .then(printOutput)
-        printOutput(res);
+        .then(() => core.info(`golangci-lint found no issues`))
-        core.info(`golangci-lint found no issues`);
+        .catch((exc) => {
-    }
+        // This logging passes issues to GitHub annotations.
-    catch (exc) {
-        // This logging passes issues to GitHub annotations but comments can be more convenient for some users.
         printOutput(exc);
         if (exc.code === 1) {
             core.setFailed(`issues found`);
@@ -97568,8 +97541,8 @@ async function runLint(binPath, patchPath) {
         else {
             core.setFailed(`golangci-lint exit with code ${exc.code}`);
         }
-    }
+    })
-    core.info(`Ran golangci-lint in ${Date.now() - startedAt}ms`);
+        .finally(() => core.info(`Ran golangci-lint in ${Date.now() - startedAt}ms`));
 }
 async function runVerify(binPath, userArgsMap, cmdArgs) {
     const verify = core.getBooleanInput(`verify`, { required: true });
@@ -97585,8 +97558,7 @@ async function runVerify(binPath, userArgsMap, cmdArgs) {
         cmdVerify += ` --config=${userArgsMap.get("config")}`;
     }
     core.info(`Running [${cmdVerify}] in [${cmdArgs.cwd || process.cwd()}] ...`);
-    const res = await execShellCommand(cmdVerify, cmdArgs);
+    await execCommand(cmdVerify, cmdArgs).then(printOutput);
-    printOutput(res);
 }
 async function getConfigPath(binPath, userArgsMap, cmdArgs) {
     let cmdConfigPath = `${binPath} config path`;
@@ -97595,22 +97567,73 @@ async function getConfigPath(binPath, userArgsMap, cmdArgs) {
     }
     core.info(`Running [${cmdConfigPath}] in [${cmdArgs.cwd || process.cwd()}] ...`);
     try {
-        const resPath = await execShellCommand(cmdConfigPath, cmdArgs);
+        const resPath = await execCommand(cmdConfigPath, cmdArgs);
         return resPath.stderr.trim();
     }
     catch {
         return ``;
     }
 }
+async function debugAction(binPath) {
+    const flags = core.getInput(`debug`).split(`,`);
+    if (flags.includes(`clean`)) {
+        const cmd = `${binPath} cache clean`;
+        core.info(`Running [${cmd}] ...`);
+        await execCommand(cmd).then(printOutput);
+    }
+    if (flags.includes(`cache`)) {
+        const cmd = `${binPath} cache status`;
+        core.info(`Running [${cmd}] ...`);
+        await execCommand(cmd).then(printOutput);
+    }
+}
+function getWorkingDirectory() {
+    const workingDirectory = core.getInput(`working-directory`);
+    if (workingDirectory) {
+        if (!fs.existsSync(workingDirectory) || !fs.lstatSync(workingDirectory).isDirectory()) {
+            throw new Error(`working-directory (${workingDirectory}) was not a path`);
+        }
+    }
+    return workingDirectory;
+}
+function modulesAutoDetection(rootDir) {
+    const o = {
+        cwd: rootDir,
+        exclude: ["**/vendor/**", "**/node_modules/**", "**/.git/**", "**/dist/**"],
+    };
+    const matches = fs.globSync("**/go.mod", o);
+    const dirs = matches
+        .filter((m) => typeof m === "string")
+        .map((m) => path.resolve(rootDir, path.dirname(m)))
+        .sort();
+    return [...new Set(dirs)];
+}
+async function runLint(binPath) {
+    const workingDirectory = getWorkingDirectory();
+    const experimental = core.getInput(`experimental`).split(`,`);
+    if (experimental.includes(`automatic-module-directories`)) {
+        const wds = modulesAutoDetection(workingDirectory);
+        const cwd = process.cwd();
+        for (const wd of wds) {
+            await core.group(`run golangci-lint in ${path.relative(cwd, wd)}`, () => runGolangciLint(binPath, wd));
+        }
+        return;
+    }
+    await core.group(`run golangci-lint`, () => runGolangciLint(binPath, workingDirectory));
+}
 async function run() {
     try {
-        const installOnly = core.getBooleanInput(`install-only`, { required: true });
+        await core.group(`Restore cache`, cache_1.restoreCache);
-        const { binPath, patchPath } = await core.group(`prepare environment`, () => prepareEnv(installOnly));
+        const binPath = await core.group(`Install`, () => (0, install_1.install)().then(plugins.install));
         core.addPath(path.dirname(binPath));
+        if (core.getInput(`debug`)) {
+            await core.group(`Debug`, () => debugAction(binPath));
+        }
+        const installOnly = core.getBooleanInput(`install-only`, { required: true });
         if (installOnly) {
             return;
         }
-        await core.group(`run golangci-lint`, () => runLint(binPath, patchPath));
+        await runLint(binPath);
     }
     catch (error) {
         core.error(`Failed to run: ${error}, ${error.stack}`);

go.mod

@@ -1,3 +1,3 @@
 module github.com/golangci/golangci-lint-action
 
-go 1.23
+go 1.24.0

package-lock.json

@@ -16,16 +16,16 @@
         "@actions/http-client": "^3.0.0",
         "@actions/tool-cache": "^2.0.2",
         "@octokit/plugin-retry": "^6.1.0",
-        "@types/node": "^24.10.0",
+        "@types/node": "^24.10.1",
         "@types/semver": "^7.7.1",
         "@types/tmp": "^0.2.6",
         "@types/which": "^3.0.4",
         "tmp": "^0.2.5",
-        "which": "^5.0.0",
+        "which": "^6.0.0",
         "yaml": "^2.8.1"
       },
       "devDependencies": {
-        "@typescript-eslint/eslint-plugin": "^8.46.2",
+        "@typescript-eslint/eslint-plugin": "^8.46.4",
         "@typescript-eslint/parser": "^8.32.1",
         "@vercel/ncc": "^0.38.4",
         "eslint": "^8.57.1",
@@ -730,9 +730,9 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "24.10.0",
+      "version": "24.10.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.10.0.tgz",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.10.1.tgz",
-      "integrity": "sha512-qzQZRBqkFsYyaSWXuEHc2WR9c0a0CXwiE5FWUvn7ZM+vdy1uZLfCunD38UzhuB7YN/J11ndbDBcTmOdxJo9Q7A==",
+      "integrity": "sha512-GNWcUTRBgIRJD5zj+Tq0fKOJ5XZajIiBroOF0yvj2bSU1WvNdYS/dn9UxwsujGW4JX06dnHyjV2y9rRaybH0iQ==",
       "license": "MIT",
       "dependencies": {
         "undici-types": "~7.16.0"
@@ -788,17 +788,17 @@
       "integrity": "sha512-liyfuo/106JdlgSchJzXEQCVArk0CvevqPote8F8HgWgJ3dRCcTHgJIsLDuee0kxk/mhbInzIZk3QWSZJ8R+2w=="
     },
     "node_modules/@typescript-eslint/eslint-plugin": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.46.4.tgz",
-      "integrity": "sha512-ZGBMToy857/NIPaaCucIUQgqueOiq7HeAKkhlvqVV4lm089zUFW6ikRySx2v+cAhKeUCPuWVHeimyk6Dw1iY3w==",
+      "integrity": "sha512-R48VhmTJqplNyDxCyqqVkFSZIx1qX6PzwqgcXn1olLrzxcSBDlOsbtcnQuQhNtnNiJ4Xe5gREI1foajYaYU2Vg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@eslint-community/regexpp": "^4.10.0",
-        "@typescript-eslint/scope-manager": "8.46.2",
+        "@typescript-eslint/scope-manager": "8.46.4",
-        "@typescript-eslint/type-utils": "8.46.2",
+        "@typescript-eslint/type-utils": "8.46.4",
-        "@typescript-eslint/utils": "8.46.2",
+        "@typescript-eslint/utils": "8.46.4",
-        "@typescript-eslint/visitor-keys": "8.46.2",
+        "@typescript-eslint/visitor-keys": "8.46.4",
         "graphemer": "^1.4.0",
         "ignore": "^7.0.0",
         "natural-compare": "^1.4.0",
@@ -812,7 +812,7 @@
         "url": "https://opencollective.com/typescript-eslint"
       },
       "peerDependencies": {
-        "@typescript-eslint/parser": "^8.46.2",
+        "@typescript-eslint/parser": "^8.46.4",
         "eslint": "^8.57.0 || ^9.0.0",
         "typescript": ">=4.8.4 <6.0.0"
       }
@@ -828,16 +828,16 @@
       }
     },
     "node_modules/@typescript-eslint/parser": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.46.4.tgz",
-      "integrity": "sha512-BnOroVl1SgrPLywqxyqdJ4l3S2MsKVLDVxZvjI1Eoe8ev2r3kGDo+PcMihNmDE+6/KjkTubSJnmqGZZjQSBq/g==",
+      "integrity": "sha512-tK3GPFWbirvNgsNKto+UmB/cRtn6TZfyw0D6IKrW55n6Vbs7KJoZtI//kpTKzE/DUmmnAFD8/Ca46s7Obs92/w==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/scope-manager": "8.46.2",
+        "@typescript-eslint/scope-manager": "8.46.4",
-        "@typescript-eslint/types": "8.46.2",
+        "@typescript-eslint/types": "8.46.4",
-        "@typescript-eslint/typescript-estree": "8.46.2",
+        "@typescript-eslint/typescript-estree": "8.46.4",
-        "@typescript-eslint/visitor-keys": "8.46.2",
+        "@typescript-eslint/visitor-keys": "8.46.4",
         "debug": "^4.3.4"
       },
       "engines": {
@@ -853,14 +853,14 @@
       }
     },
     "node_modules/@typescript-eslint/project-service": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.46.4.tgz",
-      "integrity": "sha512-PULOLZ9iqwI7hXcmL4fVfIsBi6AN9YxRc0frbvmg8f+4hQAjQ5GYNKK0DIArNo+rOKmR/iBYwkpBmnIwin4wBg==",
+      "integrity": "sha512-nPiRSKuvtTN+no/2N1kt2tUh/HoFzeEgOm9fQ6XQk4/ApGqjx0zFIIaLJ6wooR1HIoozvj2j6vTi/1fgAz7UYQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/tsconfig-utils": "^8.46.2",
+        "@typescript-eslint/tsconfig-utils": "^8.46.4",
-        "@typescript-eslint/types": "^8.46.2",
+        "@typescript-eslint/types": "^8.46.4",
         "debug": "^4.3.4"
       },
       "engines": {
@@ -875,14 +875,14 @@
       }
     },
     "node_modules/@typescript-eslint/scope-manager": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/scope-manager/-/scope-manager-8.46.4.tgz",
-      "integrity": "sha512-LF4b/NmGvdWEHD2H4MsHD8ny6JpiVNDzrSZr3CsckEgCbAGZbYM4Cqxvi9L+WqDMT+51Ozy7lt2M+d0JLEuBqA==",
+      "integrity": "sha512-tMDbLGXb1wC+McN1M6QeDx7P7c0UWO5z9CXqp7J8E+xGcJuUuevWKxuG8j41FoweS3+L41SkyKKkia16jpX7CA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.46.2",
+        "@typescript-eslint/types": "8.46.4",
-        "@typescript-eslint/visitor-keys": "8.46.2"
+        "@typescript-eslint/visitor-keys": "8.46.4"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -893,9 +893,9 @@
       }
     },
     "node_modules/@typescript-eslint/tsconfig-utils": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/tsconfig-utils/-/tsconfig-utils-8.46.4.tgz",
-      "integrity": "sha512-a7QH6fw4S57+F5y2FIxxSDyi5M4UfGF+Jl1bCGd7+L4KsaUY80GsiF/t0UoRFDHAguKlBaACWJRmdrc6Xfkkag==",
+      "integrity": "sha512-+/XqaZPIAk6Cjg7NWgSGe27X4zMGqrFqZ8atJsX3CWxH/jACqWnrWI68h7nHQld0y+k9eTTjb9r+KU4twLoo9A==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -910,15 +910,15 @@
       }
     },
     "node_modules/@typescript-eslint/type-utils": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/type-utils/-/type-utils-8.46.4.tgz",
-      "integrity": "sha512-HbPM4LbaAAt/DjxXaG9yiS9brOOz6fabal4uvUmaUYe6l3K1phQDMQKBRUrr06BQkxkvIZVVHttqiybM9nJsLA==",
+      "integrity": "sha512-V4QC8h3fdT5Wro6vANk6eojqfbv5bpwHuMsBcJUJkqs2z5XnYhJzyz9Y02eUmF9u3PgXEUiOt4w4KHR3P+z0PQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.46.2",
+        "@typescript-eslint/types": "8.46.4",
-        "@typescript-eslint/typescript-estree": "8.46.2",
+        "@typescript-eslint/typescript-estree": "8.46.4",
-        "@typescript-eslint/utils": "8.46.2",
+        "@typescript-eslint/utils": "8.46.4",
         "debug": "^4.3.4",
         "ts-api-utils": "^2.1.0"
       },
@@ -935,9 +935,9 @@
       }
     },
     "node_modules/@typescript-eslint/types": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-8.46.4.tgz",
-      "integrity": "sha512-lNCWCbq7rpg7qDsQrd3D6NyWYu+gkTENkG5IKYhUIcxSb59SQC/hEQ+MrG4sTgBVghTonNWq42bA/d4yYumldQ==",
+      "integrity": "sha512-USjyxm3gQEePdUwJBFjjGNG18xY9A2grDVGuk7/9AkjIF1L+ZrVnwR5VAU5JXtUnBL/Nwt3H31KlRDaksnM7/w==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -949,16 +949,16 @@
       }
     },
     "node_modules/@typescript-eslint/typescript-estree": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/typescript-estree/-/typescript-estree-8.46.4.tgz",
-      "integrity": "sha512-f7rW7LJ2b7Uh2EiQ+7sza6RDZnajbNbemn54Ob6fRwQbgcIn+GWfyuHDHRYgRoZu1P4AayVScrRW+YfbTvPQoQ==",
+      "integrity": "sha512-7oV2qEOr1d4NWNmpXLR35LvCfOkTNymY9oyW+lUHkmCno7aOmIf/hMaydnJBUTBMRCOGZh8YjkFOc8dadEoNGA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/project-service": "8.46.2",
+        "@typescript-eslint/project-service": "8.46.4",
-        "@typescript-eslint/tsconfig-utils": "8.46.2",
+        "@typescript-eslint/tsconfig-utils": "8.46.4",
-        "@typescript-eslint/types": "8.46.2",
+        "@typescript-eslint/types": "8.46.4",
-        "@typescript-eslint/visitor-keys": "8.46.2",
+        "@typescript-eslint/visitor-keys": "8.46.4",
         "debug": "^4.3.4",
         "fast-glob": "^3.3.2",
         "is-glob": "^4.0.3",
@@ -1017,16 +1017,16 @@
       }
     },
     "node_modules/@typescript-eslint/utils": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.46.4.tgz",
-      "integrity": "sha512-sExxzucx0Tud5tE0XqR0lT0psBQvEpnpiul9XbGUB1QwpWJJAps1O/Z7hJxLGiZLBKMCutjTzDgmd1muEhBnVg==",
+      "integrity": "sha512-AbSv11fklGXV6T28dp2Me04Uw90R2iJ30g2bgLz529Koehrmkbs1r7paFqr1vPCZi7hHwYxYtxfyQMRC8QaVSg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.7.0",
-        "@typescript-eslint/scope-manager": "8.46.2",
+        "@typescript-eslint/scope-manager": "8.46.4",
-        "@typescript-eslint/types": "8.46.2",
+        "@typescript-eslint/types": "8.46.4",
-        "@typescript-eslint/typescript-estree": "8.46.2"
+        "@typescript-eslint/typescript-estree": "8.46.4"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -1041,13 +1041,13 @@
       }
     },
     "node_modules/@typescript-eslint/visitor-keys": {
-      "version": "8.46.2",
+      "version": "8.46.4",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.46.2.tgz",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.46.4.tgz",
-      "integrity": "sha512-tUFMXI4gxzzMXt4xpGJEsBsTox0XbNQ1y94EwlD/CuZwFcQP79xfQqMhau9HsRc/J0cAPA/HZt1dZPtGn9V/7w==",
+      "integrity": "sha512-/++5CYLQqsO9HFGLI7APrxBJYo+5OCMpViuhV8q5/Qa3o5mMrF//eQHks+PXcsAVaLdn817fMuS7zqoXNNZGaw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.46.2",
+        "@typescript-eslint/types": "8.46.4",
         "eslint-visitor-keys": "^4.2.1"
       },
       "engines": {
@@ -3028,10 +3028,11 @@
       }
     },
     "node_modules/js-yaml": {
-      "version": "4.1.0",
+      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
-      "integrity": "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==",
+      "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "argparse": "^2.0.1"
       },
@@ -4273,9 +4274,10 @@
       }
     },
     "node_modules/which": {
-      "version": "5.0.0",
+      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/which/-/which-5.0.0.tgz",
+      "resolved": "https://registry.npmjs.org/which/-/which-6.0.0.tgz",
-      "integrity": "sha512-JEdGzHwwkrbWoGOlIHqQ5gtprKGOenpDHpxE9zVR1bWbOtYRyPPHMe9FaP6x61CmNaTThSkb0DAJte5jD+DmzQ==",
+      "integrity": "sha512-f+gEpIKMR9faW/JgAgPK1D7mekkFoqbmiwvNzuhsHetni20QSgzg9Vhn0g2JSJkkfehQnqdUAx7/e15qS1lPxg==",
+      "license": "ISC",
       "dependencies": {
         "isexe": "^3.1.1"
       },
@@ -4283,7 +4285,7 @@
         "node-which": "bin/which.js"
       },
       "engines": {
-        "node": "^18.17.0 || >=20.5.0"
+        "node": "^20.17.0 || >=22.9.0"
       }
     },
     "node_modules/which-boxed-primitive": {

package.json

@@ -34,16 +34,16 @@
     "@actions/http-client": "^3.0.0",
     "@octokit/plugin-retry": "^6.1.0",
     "@actions/tool-cache": "^2.0.2",
-    "@types/node": "^24.10.0",
+    "@types/node": "^24.10.1",
     "@types/semver": "^7.7.1",
     "@types/tmp": "^0.2.6",
     "@types/which": "^3.0.4",
     "tmp": "^0.2.5",
-    "which": "^5.0.0",
+    "which": "^6.0.0",
     "yaml": "^2.8.1"
   },
   "devDependencies": {
-    "@typescript-eslint/eslint-plugin": "^8.46.2",
+    "@typescript-eslint/eslint-plugin": "^8.46.4",
     "@typescript-eslint/parser": "^8.32.1",
     "@vercel/ncc": "^0.38.4",
     "eslint": "^8.57.1",

sample-monorepo/a/go.mod

@@ -0,0 +1,3 @@
+module github.com/golangci/actiona
+
+go 1.24.0

sample-monorepo/a/sample.go

@@ -0,0 +1,26 @@
+// Package sample is used as test input for golangci action.
+package sample
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+)
+
+// Hash~
+func Hash(data string) string {
+	retError()
+	retError2()
+
+	h := md5.New()
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func retError() error {
+	return errors.New("err")
+}
+
+func retError2() error {
+	return errors.New("err2")
+}

sample-monorepo/a/suba/go.mod

@@ -0,0 +1,3 @@
+module github.com/golangci/actiona/suba
+
+go 1.24.0

sample-monorepo/a/suba/sample.go

@@ -0,0 +1,26 @@
+// Package sample is used as test input for golangci action.
+package sample
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+)
+
+// Hash~
+func Hash(data string) string {
+	retError()
+	retError2()
+
+	h := md5.New()
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func retError() error {
+	return errors.New("err")
+}
+
+func retError2() error {
+	return errors.New("err2")
+}

sample-monorepo/b/go.mod

@@ -0,0 +1,3 @@
+module github.com/golangci/actionb
+
+go 1.24.0

sample-monorepo/b/sample.go

@@ -0,0 +1,26 @@
+// Package sample is used as test input for golangci action.
+package sample
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+)
+
+// Hash~
+func Hash(data string) string {
+	retError()
+	retError2()
+
+	h := md5.New()
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func retError() error {
+	return errors.New("err")
+}
+
+func retError2() error {
+	return errors.New("err2")
+}

sample-monorepo/c/go.mod

@@ -0,0 +1,3 @@
+module github.com/golangci/actionc
+
+go 1.24.0

sample-monorepo/c/sample.go

@@ -0,0 +1,26 @@
+// Package sample is used as test input for golangci action.
+package sample
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"errors"
+)
+
+// Hash~
+func Hash(data string) string {
+	retError()
+	retError2()
+
+	h := md5.New()
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func retError() error {
+	return errors.New("err")
+}
+
+func retError2() error {
+	return errors.New("err2")
+}

src/cache.ts

@@ -74,7 +74,10 @@ async function buildCacheKeys(): Promise<string[]> {
 }
 
 export async function restoreCache(): Promise<void> {
-  if (core.getBooleanInput(`skip-cache`, { required: true })) return
+  if (core.getBooleanInput(`skip-cache`, { required: true })) {
+    core.info(`Skipping cache restoration`)
+    return
+  }
 
   if (!utils.isValidEvent()) {
     utils.logWarning(
@@ -116,8 +119,15 @@ export async function restoreCache(): Promise<void> {
 }
 
 export async function saveCache(): Promise<void> {
-  if (core.getBooleanInput(`skip-cache`, { required: true })) return
+  if (core.getBooleanInput(`skip-cache`, { required: true })) {
-  if (core.getBooleanInput(`skip-save-cache`, { required: true })) return
+    core.info(`Skipping cache saving`)
+    return
+  }
+
+  if (core.getBooleanInput(`skip-save-cache`, { required: true })) {
+    core.info(`Skipping cache saving`)
+    return
+  }
 
   // Validate inputs, this can cause task failure
   if (!utils.isValidEvent()) {

src/install.ts

@@ -1,6 +1,7 @@
 import * as core from "@actions/core"
 import * as tc from "@actions/tool-cache"
 import { exec, ExecOptionsWithStringEncoding } from "child_process"
+import fs from "fs"
 import os from "os"
 import path from "path"
 import { promisify } from "util"
@@ -8,7 +9,7 @@ import which from "which"
 
 import { getVersion, VersionInfo } from "./version"
 
-const execShellCommand = promisify(exec)
+const execCommand = promisify(exec)
 
 export enum InstallMode {
   Binary = "binary",
@@ -21,13 +22,15 @@ type ExecRes = {
   stderr: string
 }
 
-const printOutput = (res: ExecRes): void => {
+const printOutput = (res: ExecRes): ExecRes => {
   if (res.stdout) {
     core.info(res.stdout)
   }
   if (res.stderr) {
     core.info(res.stderr)
   }
+
+  return res
 }
 
 /**
@@ -36,6 +39,17 @@ const printOutput = (res: ExecRes): void => {
  * @returns             path to installed binary of golangci-lint.
  */
 export async function install(): Promise<string> {
+  const problemMatchers = core.getBooleanInput(`problem-matchers`)
+
+  if (problemMatchers) {
+    const matchersPath = path.join(__dirname, "../..", "problem-matchers.json")
+    if (fs.existsSync(matchersPath)) {
+      // Adds problem matchers.
+      // https://github.com/actions/setup-go/blob/cdcb36043654635271a94b9a6d1392de5bb323a7/src/main.ts#L81-L83
+      core.info(`##[add-matcher]${matchersPath}`)
+    }
+  }
+
   const mode = core.getInput("install-mode").toLowerCase()
 
   if (mode === InstallMode.None) {
@@ -84,17 +98,14 @@ async function goInstall(versionInfo: VersionInfo): Promise<string> {
 
   const options: ExecOptionsWithStringEncoding = { env: { ...process.env, CGO_ENABLED: "1" } }
 
-  const exres = await execShellCommand(
+  await execCommand(`go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`, options).then(
-    `go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`,
+    printOutput
-    options
   )
-  printOutput(exres)
 
-  const res = await execShellCommand(
+  const res = await execCommand(
     `go install -n github.com/golangci/golangci-lint/v2/cmd/golangci-lint@${versionInfo.TargetVersion}`,
     options
-  )
+  ).then(printOutput)
-  printOutput(res)
 
   // The output of `go install -n` when the binary is already installed is `touch <path_to_the_binary>`.
   const binPath = res.stderr

src/patch.ts

@@ -17,10 +17,6 @@ export function isOnlyNewIssues(): boolean {
 }
 
 export async function fetchPatch(): Promise<string> {
-  if (!isOnlyNewIssues()) {
-    return ``
-  }
-
   const ctx = github.context
 
   switch (ctx.eventName) {
@@ -70,8 +66,7 @@ async function fetchPullRequestPatch(ctx: Context): Promise<string> {
   }
 
   try {
-    const tempDir = await createTempDir()
+    const patchPath = await createTempDir().then((tempDir) => path.join(tempDir, "pull.patch"))
-    const patchPath = path.join(tempDir, "pull.patch")
     core.info(`Writing patch to ${patchPath}`)
     await writeFile(patchPath, alterDiffPatch(patch))
     return patchPath
@@ -108,8 +103,7 @@ async function fetchPushPatch(ctx: Context): Promise<string> {
   }
 
   try {
-    const tempDir = await createTempDir()
+    const patchPath = await createTempDir().then((tempDir) => path.join(tempDir, "push.patch"))
-    const patchPath = path.join(tempDir, "push.patch")
     core.info(`Writing patch to ${patchPath}`)
     await writeFile(patchPath, alterDiffPatch(patch))
     return patchPath

src/plugins.ts

@@ -5,7 +5,7 @@ import * as path from "path"
 import { promisify } from "util"
 import YAML from "yaml"
 
-const execShellCommand = promisify(exec)
+const execCommand = promisify(exec)
 
 type ExecRes = {
   stdout: string
@@ -34,12 +34,13 @@ export async function install(binPath: string): Promise<string> {
     rootDir = process.cwd()
   }
 
-  const configFile = [".custom-gcl.yml", ".custom-gcl.yaml", ".custom-gcl.json"]
+  const configFile = ["yml", "yaml", "json"]
-    .map((v) => path.join(rootDir, v))
+    .map((ext) => `.custom-gcl.${ext}`)
+    .map((filename) => path.join(rootDir, filename))
     .find((filePath) => fs.existsSync(filePath))
 
   if (!configFile || configFile === "") {
-    return ""
+    return binPath
   }
 
   core.info(`Found configuration for the plugin module system : ${configFile}`)
@@ -53,7 +54,7 @@ export async function install(binPath: string): Promise<string> {
   const v: string = core.getInput(`version`)
   if (v !== "" && config.version !== v) {
     core.warning(
-      `The golangci-lint version (${config.version}) defined inside in ${configFile} does not match the version defined in the action (${v})`
+      `The golangci-lint version (${config.version}) defined inside ${configFile} does not match the version defined in the action (${v})`
     )
   }
 
@@ -73,18 +74,15 @@ export async function install(binPath: string): Promise<string> {
 
   core.info(`Running [${cmd}] in [${rootDir}] ...`)
 
-  try {
+  const options: ExecOptionsWithStringEncoding = {
-    const options: ExecOptionsWithStringEncoding = {
+    cwd: rootDir,
-      cwd: rootDir,
-    }
-
-    const res = await execShellCommand(cmd, options)
-    printOutput(res)
-
-    core.info(`Built custom golangci-lint binary in ${Date.now() - startedAt}ms`)
-
-    return path.join(rootDir, config.destination, config.name)
-  } catch (exc) {
-    throw new Error(`Failed to build custom golangci-lint binary: ${exc.message}`)
   }
+
+  return execCommand(cmd, options)
+    .then(printOutput)
+    .then(() => core.info(`Built custom golangci-lint binary in ${Date.now() - startedAt}ms`))
+    .then(() => path.join(rootDir, config.destination, config.name))
+    .catch((exc) => {
+      throw new Error(`Failed to build custom golangci-lint binary: ${exc.message}`)
+    })
 }

src/run.ts

@@ -10,37 +10,7 @@ import { install } from "./install"
 import { fetchPatch, isOnlyNewIssues } from "./patch"
 import * as plugins from "./plugins"
 
-const execShellCommand = promisify(exec)
+const execCommand = promisify(exec)
-
-type Env = {
-  binPath: string
-  patchPath: string
-}
-
-async function prepareEnv(installOnly: boolean): Promise<Env> {
-  const startedAt = Date.now()
-
-  // Prepare cache, lint and go in parallel.
-  await restoreCache()
-
-  let binPath = await install()
-
-  // Build custom golangci-lint if needed.
-  const customBinPath = await plugins.install(binPath)
-  if (customBinPath !== "") {
-    binPath = customBinPath
-  }
-
-  if (installOnly) {
-    return { binPath, patchPath: `` }
-  }
-
-  const patchPath = await fetchPatch()
-
-  core.info(`Prepared env in ${Date.now() - startedAt}ms`)
-
-  return { binPath, patchPath }
-}
 
 type ExecRes = {
   stdout: string
@@ -56,13 +26,7 @@ const printOutput = (res: ExecRes): void => {
   }
 }
 
-async function runLint(binPath: string, patchPath: string): Promise<void> {
+async function runGolangciLint(binPath: string, rootDir: string): Promise<void> {
-  const debug = core.getInput(`debug`)
-  if (debug.split(`,`).includes(`cache`)) {
-    const res = await execShellCommand(`${binPath} cache status`)
-    printOutput(res)
-  }
-
   const userArgs = core.getInput(`args`)
   const addedArgs: string[] = []
 
@@ -77,17 +41,6 @@ async function runLint(binPath: string, patchPath: string): Promise<void> {
   const userArgsMap = new Map<string, string>(userArgsList)
   const userArgNames = new Set<string>(userArgsList.map(([key]) => key))
 
-  const problemMatchers = core.getBooleanInput(`problem-matchers`)
-
-  if (problemMatchers) {
-    const matchersPath = path.join(__dirname, "../..", "problem-matchers.json")
-    if (fs.existsSync(matchersPath)) {
-      // Adds problem matchers.
-      // https://github.com/actions/setup-go/blob/cdcb36043654635271a94b9a6d1392de5bb323a7/src/main.ts#L81-L83
-      core.info(`##[add-matcher]${matchersPath}`)
-    }
-  }
-
   if (isOnlyNewIssues()) {
     if (
       userArgNames.has(`new`) ||
@@ -99,6 +52,7 @@ async function runLint(binPath: string, patchPath: string): Promise<void> {
     }
 
     const ctx = github.context
+    const patchPath = await fetchPatch()
 
     core.info(`only new issues on ${ctx.eventName}: ${patchPath}`)
 
@@ -130,17 +84,12 @@ async function runLint(binPath: string, patchPath: string): Promise<void> {
 
   const cmdArgs: ExecOptionsWithStringEncoding = {}
 
-  const workingDirectory = core.getInput(`working-directory`)
+  if (rootDir) {
-  if (workingDirectory) {
-    if (!fs.existsSync(workingDirectory) || !fs.lstatSync(workingDirectory).isDirectory()) {
-      throw new Error(`working-directory (${workingDirectory}) was not a path`)
-    }
-
     if (!userArgNames.has(`path-prefix`) && !userArgNames.has(`path-mode`)) {
       addedArgs.push(`--path-mode=abs`)
     }
 
-    cmdArgs.cwd = path.resolve(workingDirectory)
+    cmdArgs.cwd = path.resolve(rootDir)
   }
 
   await runVerify(binPath, userArgsMap, cmdArgs)
@@ -150,22 +99,21 @@ async function runLint(binPath: string, patchPath: string): Promise<void> {
   core.info(`Running [${cmd}] in [${cmdArgs.cwd || process.cwd()}] ...`)
 
   const startedAt = Date.now()
-  try {
-    const res = await execShellCommand(cmd, cmdArgs)
-    printOutput(res)
-    core.info(`golangci-lint found no issues`)
-  } catch (exc) {
-    // This logging passes issues to GitHub annotations but comments can be more convenient for some users.
-    printOutput(exc)
 
-    if (exc.code === 1) {
+  return execCommand(cmd, cmdArgs)
-      core.setFailed(`issues found`)
+    .then(printOutput)
-    } else {
+    .then(() => core.info(`golangci-lint found no issues`))
-      core.setFailed(`golangci-lint exit with code ${exc.code}`)
+    .catch((exc) => {
-    }
+      // This logging passes issues to GitHub annotations.
-  }
+      printOutput(exc)
 
-  core.info(`Ran golangci-lint in ${Date.now() - startedAt}ms`)
+      if (exc.code === 1) {
+        core.setFailed(`issues found`)
+      } else {
+        core.setFailed(`golangci-lint exit with code ${exc.code}`)
+      }
+    })
+    .finally(() => core.info(`Ran golangci-lint in ${Date.now() - startedAt}ms`))
 }
 
 async function runVerify(binPath: string, userArgsMap: Map<string, string>, cmdArgs: ExecOptionsWithStringEncoding): Promise<void> {
@@ -186,8 +134,7 @@ async function runVerify(binPath: string, userArgsMap: Map<string, string>, cmdA
 
   core.info(`Running [${cmdVerify}] in [${cmdArgs.cwd || process.cwd()}] ...`)
 
-  const res = await execShellCommand(cmdVerify, cmdArgs)
+  await execCommand(cmdVerify, cmdArgs).then(printOutput)
-  printOutput(res)
 }
 
 async function getConfigPath(binPath: string, userArgsMap: Map<string, string>, cmdArgs: ExecOptionsWithStringEncoding): Promise<string> {
@@ -199,26 +146,98 @@ async function getConfigPath(binPath: string, userArgsMap: Map<string, string>,
   core.info(`Running [${cmdConfigPath}] in [${cmdArgs.cwd || process.cwd()}] ...`)
 
   try {
-    const resPath = await execShellCommand(cmdConfigPath, cmdArgs)
+    const resPath = await execCommand(cmdConfigPath, cmdArgs)
     return resPath.stderr.trim()
   } catch {
     return ``
   }
 }
 
+async function debugAction(binPath: string) {
+  const flags = core.getInput(`debug`).split(`,`)
+
+  if (flags.includes(`clean`)) {
+    const cmd = `${binPath} cache clean`
+
+    core.info(`Running [${cmd}] ...`)
+
+    await execCommand(cmd).then(printOutput)
+  }
+
+  if (flags.includes(`cache`)) {
+    const cmd = `${binPath} cache status`
+
+    core.info(`Running [${cmd}] ...`)
+
+    await execCommand(cmd).then(printOutput)
+  }
+}
+
+function getWorkingDirectory(): string {
+  const workingDirectory = core.getInput(`working-directory`)
+  if (workingDirectory) {
+    if (!fs.existsSync(workingDirectory) || !fs.lstatSync(workingDirectory).isDirectory()) {
+      throw new Error(`working-directory (${workingDirectory}) was not a path`)
+    }
+  }
+
+  return workingDirectory
+}
+
+function modulesAutoDetection(rootDir: string): string[] {
+  const o: fs.GlobOptions = {
+    cwd: rootDir,
+    exclude: ["**/vendor/**", "**/node_modules/**", "**/.git/**", "**/dist/**"],
+  }
+
+  const matches = fs.globSync("**/go.mod", o)
+
+  const dirs = matches
+    .filter((m) => typeof m === "string")
+    .map((m) => path.resolve(rootDir, path.dirname(m)))
+    .sort()
+
+  return [...new Set(dirs)]
+}
+
+async function runLint(binPath: string): Promise<void> {
+  const workingDirectory = getWorkingDirectory()
+
+  const experimental = core.getInput(`experimental`).split(`,`)
+
+  if (experimental.includes(`automatic-module-directories`)) {
+    const wds = modulesAutoDetection(workingDirectory)
+
+    const cwd = process.cwd()
+
+    for (const wd of wds) {
+      await core.group(`run golangci-lint in ${path.relative(cwd, wd)}`, () => runGolangciLint(binPath, wd))
+    }
+
+    return
+  }
+
+  await core.group(`run golangci-lint`, () => runGolangciLint(binPath, workingDirectory))
+}
+
 export async function run(): Promise<void> {
   try {
-    const installOnly = core.getBooleanInput(`install-only`, { required: true })
+    await core.group(`Restore cache`, restoreCache)
 
-    const { binPath, patchPath } = await core.group(`prepare environment`, () => prepareEnv(installOnly))
+    const binPath = await core.group(`Install`, () => install().then(plugins.install))
 
     core.addPath(path.dirname(binPath))
 
+    if (core.getInput(`debug`)) {
+      await core.group(`Debug`, () => debugAction(binPath))
+    }
+
+    const installOnly = core.getBooleanInput(`install-only`, { required: true })
     if (installOnly) {
       return
     }
 
-    await core.group(`run golangci-lint`, () => runLint(binPath, patchPath))
+    await runLint(binPath)
   } catch (error) {
     core.error(`Failed to run: ${error}, ${error.stack}`)
     core.setFailed(error.message)