Fix golang download url to go.dev (#469)

* Fix golang download url to go.dev

* Fix const name

* Run `npm run build`

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

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checking out
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - 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-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go Stable
         uses: ./
         with:
@@ -35,7 +35,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go oldStable
         uses: ./
         with:
@@ -57,7 +57,7 @@ jobs:
           - os: macos-latest-large
             architecture: x32
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go ${{ matrix.version }} ${{ matrix.architecture }}
         uses: ./
         with:
@@ -82,7 +82,7 @@ jobs:
             go: 1.23.2
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -101,7 +101,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
         go-version: ['1.20', '1.21', '1.22', '1.23']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -117,7 +117,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -133,7 +133,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -149,7 +149,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go and check latest
         uses: ./
         with:
@@ -165,7 +165,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest, macos-latest-large]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup Go from .go-version file
         uses: ./
         with:
@@ -183,7 +183,7 @@ jobs:
         go: [1.20.14, 1.21.10, 1.22.8, 1.23.2]
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -203,7 +203,7 @@ jobs:
         go: [1.11.12]
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: setup-go ${{ matrix.go }}
         uses: ./
@@ -231,7 +231,7 @@ jobs:
           - os: macos-latest-large
             architecture: x64
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - 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@v5
+      - uses: actions/checkout@v6
 
       - name: 'Setup ${{ matrix.cache }}, cache: ${{ matrix.go }}'
         uses: ./
@@ -88,7 +88,7 @@ jobs:
       matrix:
         cache: [false, true]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: 'Setup default go, cache: ${{ matrix.cache }}'
         uses: ./
@@ -121,7 +121,7 @@ jobs:
         cache: [false]
         go: [1.20.1]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: 'Setup ${{ matrix.go }}, cache: ${{ matrix.cache }}'
         uses: ./

README.md

@@ -13,7 +13,7 @@ This action sets up a Go environment for use in GitHub Actions by:
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23'
@@ -24,24 +24,18 @@ steps:
 
 ### V6 Changes
 
-#### Node Runtime Upgrade
+**Node Runtime Upgrade**
 - **Upgraded from Node 20 to Node 24**
 - ⚠️ **Action Required**: Ensure your runner is on version v2.327.1 or later for compatibility
 - See [Release Notes](https://github.com/actions/runner/releases/tag/v2.327.1) for more details
 
-#### Enhanced Go Toolchain Management
+**Enhanced Go Toolchain Management**
 
-V6 introduces significant improvements for reliable and consistent Go version selection:
+V6 introduces significant improvements for reliable and consistent Go version selection. Supports both `go` and `toolchain` directives in `go.mod`. If the `toolchain` directive is present, its version is used; otherwise, the action falls back to the go directive.
+   
+**Cache Key Update**
 
-**Toolchain Directive Support**
-Now correctly interprets both `go` and `toolchain` directives from `go.mod`:
-```go
-go 1.23.0           // Minimum required version
-toolchain go1.23.2  // V6 uses this exact version
-```
-
-**Intelligent Caching**
-Cache keys now incorporate the `toolchain` directive version from `go.mod`, eliminating cache conflicts when switching between different toolchain versions within the same Go minor release.
+By default, caching for Go modules now relies on `go.mod`. To use `go.sum`, configure the `cache-dependency-path` input.
 
 For more details, see the [full release notes](https://github.com/actions/setup-go/releases/tag/v6.0.0).
 
@@ -67,7 +61,7 @@ To change the default behavior, use the `check-latest` input.
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23'
@@ -80,7 +74,7 @@ steps:
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '^1.23.1' # The Go version to download (if necessary) and use.
@@ -89,7 +83,7 @@ steps:
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '>=1.22.0'
@@ -107,7 +101,7 @@ steps:
 ```yaml
 # RC version
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
        go-version: '1.24.0-rc.1' # The Go version to download (if necessary) and use
@@ -117,7 +111,7 @@ steps:
 ```yaml
 # Beta version
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23.0-beta.1' # The Go version to download (if necessary) and use
@@ -131,7 +125,7 @@ steps:
 If `stable` is provided, action will get the latest stable version from the [go-versions](https://github.com/actions/go-versions/blob/main/versions-manifest.json) repository manifest.
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: 'stable' # Latest stable version
@@ -143,7 +137,7 @@ steps:
 If `oldstable` is provided, when the current release is 1.23.x, the action will resolve version as 1.22.x, where x is the latest patch release.
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: 'oldstable' # Previous stable version
@@ -164,7 +158,7 @@ Automatically detect the Go version from your project's `go.mod` file:
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version-file: 'go.mod'
@@ -182,7 +176,7 @@ Use the Go version specified in your `go.work` file:
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version-file: 'go.work'
@@ -195,7 +189,7 @@ Read the Go version from a `.go-version` file:
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version-file: '.go-version'
@@ -208,7 +202,7 @@ Use the Go version from an [`.tool-versions`](https://asdf-vm.com/manage/configu
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version-file: '.tool-versions'
@@ -221,7 +215,7 @@ The action searches for version files relative to the repository root by default
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version-file: 'path/to/.go-version'
@@ -239,7 +233,7 @@ When `check-latest: true`, the action verifies if your cached Go version is the
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23'
@@ -257,11 +251,11 @@ The action features integrated caching for Go modules and build outputs. Built o
 
 #### Automatic Caching
 
-Default behavior: Searches for `go.sum` in the repository root and uses its hash for the cache key.
+Default behavior: Searches for `go.mod` in the repository root and uses its hash for the cache key.
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23'
@@ -280,7 +274,7 @@ For advanced scenarios, use `cache-dependency-path` to specify:
 ```yaml
 # Example: Monorepo with multiple go.sum files
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23'
@@ -294,7 +288,7 @@ steps:
 ```yaml
 # Example: Using glob patterns to match all go.sum files
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23'
@@ -306,7 +300,7 @@ steps:
 
 ```yaml
 steps:
-  - uses: actions/checkout@v5
+  - uses: actions/checkout@v6
   - uses: actions/setup-go@v6
     with:
       go-version: '1.23'
@@ -316,6 +310,68 @@ steps:
 
 > **Note**: If caching fails, the action logs a warning but continues execution without interrupting your workflow.
 
+**Restore-Only Cache**
+
+```yaml
+# In some workflows, you may want to restore a cache without saving it. This can help reduce cache writes and storage usage in workflows that only need to read from cache
+jobs:
+    build:
+      runs-on: ${{ matrix.os }}
+      strategy:
+        matrix:
+          os: [ubuntu-latest, macos-latest, windows-latest]
+      steps:
+        - uses: actions/checkout@v6
+        - name: Setup Go
+          id: setup-go
+          uses: actions/setup-go@v6
+          with:
+            go-version: '1.24.10'
+            cache: false
+        # Capture Go cache locations
+        - name: Set Go cache variables (Linux/macOS)
+          if: runner.os != 'Windows'
+          run: |
+            echo "GO_MOD_CACHE=$(go env GOMODCACHE)" >> $GITHUB_ENV
+            echo "GO_BUILD_CACHE=$(go env GOCACHE)" >> $GITHUB_ENV
+        - name: Set Go cache variables (Windows)
+          if: runner.os == 'Windows'
+          shell: pwsh
+          run: |
+            echo "GO_MOD_CACHE=$(go env GOMODCACHE)" | Out-File $env:GITHUB_ENV -Append
+            echo "GO_BUILD_CACHE=$(go env GOCACHE)"   | Out-File $env:GITHUB_ENV -Append
+        # Normalize runner.arch to lowercase to ensure consistent cache keys
+        - name: Normalize runner architecture (Linux/macOS)
+          if: runner.os != 'Windows'
+          shell: bash
+          run: echo "ARCH=$(echo '${{ runner.arch }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
+        - name: Normalize runner architecture (Windows)
+          if: runner.os == 'Windows'
+          shell: pwsh
+          run: |
+            $arch = "${{ runner.arch }}".ToLower()
+            echo "ARCH=$arch" | Out-File $env:GITHUB_ENV -Append
+        - name: Set cache OS suffix for Linux
+          if: runner.os == 'Linux'
+          shell: bash
+          run: echo "CACHE_OS_SUFFIX=$ImageOS-" >> $GITHUB_ENV    
+        - name: Restore Go cache
+          id: go-cache
+          uses: actions/cache/restore@v5
+          with:
+            path: |
+              ${{ env.GO_MOD_CACHE }}
+              ${{ env.GO_BUILD_CACHE }}
+            key: setup-go-${{ runner.os }}-${{ env.ARCH }}-${{ env.CACHE_OS_SUFFIX }}go-${{ steps.setup-go.outputs.go-version }}-${{ hashFiles('**/go.mod') }}
+        - name: Download modules
+          run: go mod download
+        - name: Build
+          run: go build ./...
+```
+> If there are several builds on the same repo it might make sense to create a cache in one build and use it in the
+others. The action [actions/cache/restore](https://github.com/actions/cache/tree/main/restore#only-restore-cache)
+should be used in this case.
+
 ### Matrix Testing
 
 Test across multiple Go versions:
@@ -328,7 +384,7 @@ jobs:
       matrix:
         go-version: ['1.21', '1.22', '1.23']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go-version }}
@@ -421,4 +477,4 @@ Contributions are welcome! See our [Contributor's Guide](docs/contributors.md) f
 
 ## Code of Conduct
 
-👋 Be nice. See our [Code of Conduct](CODE_OF_CONDUCT.md).
+👋 Be nice. See our [Code of Conduct](CODE_OF_CONDUCT.md).

__tests__/cache-restore.test.ts

@@ -1,94 +1,83 @@
 import * as cache from '@actions/cache';
 import * as core from '@actions/core';
 import * as glob from '@actions/glob';
+import fs from 'fs';
 
 import * as cacheRestore from '../src/cache-restore';
 import * as cacheUtils from '../src/cache-utils';
 import {PackageManagerInfo} from '../src/package-managers';
 
 describe('restoreCache', () => {
-  //Arrange
-  const hashFilesSpy = jest.spyOn(glob, 'hashFiles');
-  const getCacheDirectoryPathSpy = jest.spyOn(
-    cacheUtils,
-    'getCacheDirectoryPath'
-  );
-  const restoreCacheSpy = jest.spyOn(cache, 'restoreCache');
-  const infoSpy = jest.spyOn(core, 'info');
-  const setOutputSpy = jest.spyOn(core, 'setOutput');
+  let hashFilesSpy: jest.SpyInstance;
+  let getCacheDirectoryPathSpy: jest.SpyInstance;
+  let restoreCacheSpy: jest.SpyInstance;
+  let infoSpy: jest.SpyInstance;
+  let setOutputSpy: jest.SpyInstance;
 
   const versionSpec = '1.13.1';
   const packageManager = 'default';
   const cacheDependencyPath = 'path';
 
+  let originalWorkspace: string | undefined;
+
   beforeEach(() => {
+    originalWorkspace = process.env.GITHUB_WORKSPACE;
+    process.env.GITHUB_WORKSPACE = '/test/workspace';
+    //Arrange
+    hashFilesSpy = jest.spyOn(glob, 'hashFiles');
+    getCacheDirectoryPathSpy = jest.spyOn(cacheUtils, 'getCacheDirectoryPath');
+    restoreCacheSpy = jest.spyOn(cache, 'restoreCache');
+    infoSpy = jest.spyOn(core, 'info');
+    setOutputSpy = jest.spyOn(core, 'setOutput');
+
     getCacheDirectoryPathSpy.mockImplementation(
       (PackageManager: PackageManagerInfo) => {
-        return new Promise<string[]>(resolve => {
-          resolve(['cache_directory_path', 'cache_directory_path']);
-        });
+        return Promise.resolve([
+          'cache_directory_path',
+          'cache_directory_path'
+        ]);
       }
     );
   });
 
-  it('should throw if dependency file path is not valid', async () => {
-    //Arrange
-    hashFilesSpy.mockImplementation((somePath: string) => {
-      return new Promise<string>(resolve => {
-        resolve('');
-      });
-    });
+  afterEach(() => {
+    process.env.GITHUB_WORKSPACE = originalWorkspace;
+    jest.restoreAllMocks();
+  });
 
-    //Act + Assert
-    await expect(async () => {
-      await cacheRestore.restoreCache(
+  it('should throw if dependency file path is not valid', async () => {
+    // Arrange
+    hashFilesSpy.mockImplementation(() => Promise.resolve(''));
+    // Act + Assert
+    await expect(
+      cacheRestore.restoreCache(
         versionSpec,
         packageManager,
         cacheDependencyPath
-      );
-    }).rejects.toThrow(
+      )
+    ).rejects.toThrow(
       'Some specified paths were not resolved, unable to cache dependencies.'
     );
   });
 
-  it('should inform if cache hit is not occured', async () => {
-    //Arrange
-    hashFilesSpy.mockImplementation((somePath: string) => {
-      return new Promise<string>(resolve => {
-        resolve('file_hash');
-      });
-    });
-
-    restoreCacheSpy.mockImplementation(() => {
-      return new Promise<string>(resolve => {
-        resolve('');
-      });
-    });
-
-    //Act + Assert
+  it('should inform if cache hit is not occurred', async () => {
+    // Arrange
+    hashFilesSpy.mockImplementation(() => Promise.resolve('file_hash'));
+    restoreCacheSpy.mockImplementation(() => Promise.resolve(''));
+    // Act + Assert
     await cacheRestore.restoreCache(
       versionSpec,
       packageManager,
       cacheDependencyPath
     );
-    expect(infoSpy).toHaveBeenCalledWith(`Cache is not found`);
+    expect(infoSpy).toHaveBeenCalledWith('Cache is not found');
   });
 
-  it('should set output if cache hit is occured', async () => {
-    //Arrange
-    hashFilesSpy.mockImplementation((somePath: string) => {
-      return new Promise<string>(resolve => {
-        resolve('file_hash');
-      });
-    });
-
-    restoreCacheSpy.mockImplementation(() => {
-      return new Promise<string>(resolve => {
-        resolve('cache_key');
-      });
-    });
-
-    //Act + Assert
+  it('should set output if cache hit is occurred', async () => {
+    // Arrange
+    hashFilesSpy.mockImplementation(() => Promise.resolve('file_hash'));
+    restoreCacheSpy.mockImplementation(() => Promise.resolve('cache_key'));
+    // Act + Assert
     await cacheRestore.restoreCache(
       versionSpec,
       packageManager,
@@ -96,4 +85,18 @@ describe('restoreCache', () => {
     );
     expect(setOutputSpy).toHaveBeenCalledWith('cache-hit', true);
   });
+
+  it('should throw if dependency file is not found in workspace', async () => {
+    jest.spyOn(fs, 'readdirSync').mockReturnValue(['main.go'] as any);
+
+    await expect(
+      cacheRestore.restoreCache(
+        versionSpec,
+        packageManager
+        // No cacheDependencyPath
+      )
+    ).rejects.toThrow(
+      'Dependencies file is not found in /test/workspace. Supported file pattern: go.mod'
+    );
+  });
 });

__tests__/cache-utils.test.ts

@@ -47,7 +47,7 @@ describe('getPackageManagerInfo', () => {
     //Arrange
     const packageManagerName = 'default';
     const expectedResult = {
-      dependencyFilePattern: 'go.sum',
+      dependencyFilePattern: 'go.mod',
       cacheFolderCommandList: ['go env GOMODCACHE', 'go env GOCACHE']
     };
 
@@ -73,7 +73,7 @@ describe('getCacheDirectoryPath', () => {
   const getExecOutputSpy = jest.spyOn(exec, 'getExecOutput');
 
   const validPackageManager: PackageManagerInfo = {
-    dependencyFilePattern: 'go.sum',
+    dependencyFilePattern: 'go.mod',
     cacheFolderCommandList: ['go env GOMODCACHE', 'go env GOCACHE']
   };
 

action.yml

@@ -16,7 +16,7 @@ inputs:
     description: Used to specify whether caching is needed. Set to true, if you'd like to enable caching.
     default: true
   cache-dependency-path:
-    description: 'Used to specify the path to a dependency file - go.sum'
+    description: 'Used to specify the path to a dependency file (e.g., go.mod, go.sum)'
   architecture:
     description: 'Target architecture for Go to use. Examples: x86, x64. Will use system architecture by default.'
 outputs:
@@ -25,7 +25,7 @@ outputs:
   cache-hit:
     description: 'A boolean value to indicate if a cache was hit'
 runs:
-  using: 'node20'
+  using: 'node24'
   main: 'dist/setup/index.js'
   post: 'dist/cache-save/index.js'
   post-if: success()

package.json

@@ -1,6 +1,6 @@
 {
   "name": "setup-go",
-  "version": "6.0.0",
+  "version": "6.2.0",
   "private": true,
   "description": "setup go action",
   "main": "lib/setup-go.js",
@@ -28,7 +28,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^4.0.3",
+    "@actions/cache": "^5.0.1",
     "@actions/core": "^1.11.1",
     "@actions/exec": "^1.1.1",
     "@actions/glob": "^0.5.0",

src/cache-restore.ts

@@ -55,8 +55,8 @@ const findDependencyFile = (packageManager: PackageManagerInfo) => {
   const workspace = process.env.GITHUB_WORKSPACE!;
   const rootContent = fs.readdirSync(workspace);
 
-  const goSumFileExists = rootContent.includes(dependencyFile);
-  if (!goSumFileExists) {
+  const goModFileExists = rootContent.includes(dependencyFile);
+  if (!goModFileExists) {
     throw new Error(
       `Dependencies file is not found in ${workspace}. Supported file pattern: ${dependencyFile}`
     );

src/installer.ts

@@ -18,6 +18,8 @@ const MANIFEST_URL = `https://raw.githubusercontent.com/${MANIFEST_REPO_OWNER}/$
 
 type InstallationType = 'dist' | 'manifest';
 
+const GOLANG_DOWNLOAD_URL = 'https://go.dev/dl/?mode=json&include=all';
+
 export interface IGoVersionFile {
   filename: string;
   // darwin, linux, windows
@@ -409,9 +411,8 @@ export async function findMatch(
   let result: IGoVersion | undefined;
   let match: IGoVersion | undefined;
 
-  const dlUrl = 'https://golang.org/dl/?mode=json&include=all';
   const candidates: IGoVersion[] | null = await module.exports.getVersionsDist(
-    dlUrl
+    GOLANG_DOWNLOAD_URL
   );
   if (!candidates) {
     throw new Error(`golang download url did not return results`);
@@ -527,9 +528,8 @@ async function resolveStableVersionDist(
 ) {
   const archFilter = sys.getArch(arch);
   const platFilter = sys.getPlatform();
-  const dlUrl = 'https://golang.org/dl/?mode=json&include=all';
   const candidates: IGoVersion[] | null = await module.exports.getVersionsDist(
-    dlUrl
+    GOLANG_DOWNLOAD_URL
   );
   if (!candidates) {
     throw new Error(`golang download url did not return results`);

src/package-managers.ts

@@ -9,7 +9,7 @@ export interface PackageManagerInfo {
 
 export const supportedPackageManagers: SupportedPackageManagers = {
   default: {
-    dependencyFilePattern: 'go.sum',
+    dependencyFilePattern: 'go.mod',
     cacheFolderCommandList: ['go env GOMODCACHE', 'go env GOCACHE']
   }
 };