mirror of
https://github.com/dtolnay/rust-toolchain.git
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109 lines
2.9 KiB
Markdown
109 lines
2.9 KiB
Markdown
# Install Rust Toolchain
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This GitHub Action installs a Rust toolchain using rustup. It is designed for
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one-line concise usage and good defaults.
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<br>
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## Example workflow
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```yaml
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name: test suite
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on: [push, pull_request]
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jobs:
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test:
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name: cargo test
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v3
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- uses: dtolnay/rust-toolchain@stable
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- run: cargo test --all-features
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```
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The selection of Rust toolchain is made based on the particular @rev of this
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Action being requested. For example "dtolnay/rust-toolchain@nightly" pulls in
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the nightly Rust toolchain, while "dtolnay/rust-toolchain@1.42.0" pulls in
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1.42.0.
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<br>
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## Inputs
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All inputs are optional.
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<table>
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<tr>
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<th>Name</th>
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<th>Description</th>
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</tr>
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<tr>
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<td><code>toolchain</code></td>
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<td>
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Rustup toolchain specifier e.g. <code>stable</code>, <code>nightly</code>, <code>1.42.0</code>, <code>nightly-2022-01-01</code>.
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<b>Important: the default is to match the @rev as described above.</b>
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When passing an explicit <code>toolchain</code> as an input instead of @rev, you'll want to use "dtolnay/rust-toolchain@master" as the revision of the action.
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<b>Also important: use quotes to ensure that the right toolchain version is passed to this GitHub Action.</b>
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For example, specify <code>toolchain: '1.70'</code> (with quotes) because <code>toolchain: 1.70</code> will be parsed as <code>toolchain: 1.7</code>.
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</td>
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</tr>
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<tr>
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<td><code>targets</code></td>
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<td>Comma-separated string of additional targets to install e.g. <code>wasm32-unknown-unknown</code></td>
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</tr>
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<tr>
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<td><code>components</code></td>
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<td>Comma-separated string of additional components to install e.g. <code>clippy, rustfmt</code></td>
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</tr>
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</table>
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<br>
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## Outputs
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<table>
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<tr>
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<th>Name</th>
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<th>Description</th>
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</tr>
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<tr>
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<td><code>cachekey</code></td>
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<td>A short hash of the installed rustc version, appropriate for use as a cache key. <code>"20220627a831"</code></td>
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</tr>
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<tr>
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<td><code>name</code></td>
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<td>Rustup's name for the selected version of the toolchain, like <code>"1.62.0"</code>. Suitable for use with <code>cargo +${{steps.toolchain.outputs.name}}</code>.</td>
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</tr>
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</table>
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<br>
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## Toolchain expressions
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The following forms are available for projects that use a sliding window of
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compiler support.
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```yaml
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# Installs the most recent stable toolchain as of the specified time
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# offset, which may be written in years, months, weeks, or days.
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- uses: dtolnay/rust-toolchain@master
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with:
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toolchain: stable 18 months ago
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```
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```yaml
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# Installs the stable toolchain which preceded the most recent one by
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# the specified number of minor versions.
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- uses: dtolnay/rust-toolchain@master
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with:
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toolchain: stable minus 8 releases
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```
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<br>
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## License
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The scripts and documentation in this project are released under the [MIT
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License].
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[MIT License]: LICENSE
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