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dcb4ec94ce
* Bump `actions/checkout@v3` * Bump `actions/setup-node@v3` * Bump `actions/upload-artifact@v3` * Bump `actions/setup-go@v3` in `README.md` examples * Removed mention of `stable` action argument from `README.md` * Add "new style" workflow build buttons to `README.md`
133 lines
3.9 KiB
Markdown
133 lines
3.9 KiB
Markdown
# setup-go
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[](https://github.com/actions/setup-go/actions/workflows/workflow.yml)
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[](https://github.com/actions/setup-go/actions/workflows/versions.yml)
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This action sets up a go environment for use in actions by:
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- Optionally downloading and caching a version of Go by version and adding to `PATH`.
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- Registering problem matchers for error output.
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# V3
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The V3 edition of the action offers:
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- Adds `GOBIN` to the `PATH`
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- Proxy support
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- Check latest version
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- Bug fixes (including issues around version matching and semver)
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The action will first check the local cache for a version match. If a version is not found locally, it will pull it from the `main` branch of the [go-versions](https://github.com/actions/go-versions/blob/main/versions-manifest.json) repository. On miss or failure, it will fall back to downloading directly from [go dist](https://storage.googleapis.com/golang). To change the default behavior, please use the [check-latest input](#check-latest-version).
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Matching by [semver spec](https://github.com/npm/node-semver):
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '^1.13.1' # The Go version to download (if necessary) and use.
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- run: go version
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```
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '>=1.17.0'
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- run: go version
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```
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Matching an unstable pre-release:
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '1.18.0-rc.1' # The Go version to download (if necessary) and use.
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- run: go version
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```
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '1.16.0-beta.1' # The Go version to download (if necessary) and use.
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- run: go version
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```
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# Usage
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See [action.yml](action.yml)
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## Basic:
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '1.16.1' # The Go version to download (if necessary) and use.
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- run: go run hello.go
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```
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## Check latest version:
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The `check-latest` flag defaults to `false`. Use the default or set `check-latest` to `false` if you prefer stability and if you want to ensure a specific Go version is always used.
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If `check-latest` is set to `true`, the action first checks if the cached version is the latest one. If the locally cached version is not the most up-to-date, a Go version will then be downloaded. Set `check-latest` to `true` if you want the most up-to-date Go version to always be used.
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> Setting `check-latest` to `true` has performance implications as downloading Go versions is slower than using cached versions.
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '1.14'
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check-latest: true
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- run: go run hello.go
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```
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## Matrix Testing:
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```yaml
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jobs:
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build:
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runs-on: ubuntu-latest
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strategy:
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matrix:
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go: [ '1.14', '1.13' ]
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name: Go ${{ matrix.go }} sample
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steps:
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- uses: actions/checkout@v3
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- name: Setup go
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uses: actions/setup-go@v3
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with:
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go-version: ${{ matrix.go }}
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- run: go run hello.go
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```
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### Supported version syntax
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The `go-version` input supports the following syntax:
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Specific versions: `1.15`, `1.16.1`, `1.17.0-rc.2`, `1.16.0-beta.1`
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SemVer's version range syntax: `^1.13.1`, `>=1.18.0-rc.1`
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For more information about semantic versioning please refer [semver](https://github.com/npm/node-semver) documentation
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# License
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The scripts and documentation in this project are released under the [MIT License](LICENSE)
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# Contributions
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Contributions are welcome! See [Contributor's Guide](docs/contributors.md)
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## Code of Conduct
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:wave: Be nice. See [our code of conduct](CONDUCT)
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