Configure explicit Rust toolchains and targets

.github/workflows/build.yml

@@ -12,26 +12,42 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
-  checks: write
-  pull-requests: write
+  contents: read
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-latest
+            targets: wasm32-unknown-unknown
+          - os: macos-latest
+            targets: aarch64-apple-darwin,wasm32-unknown-unknown
+          - os: windows-latest
+            targets: wasm32-unknown-unknown
 
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       with:
         persist-credentials: false
 
-    - name: Prework
-      run: |
-        printf '[package]\nname = "rust"\nversion = "0.1.0"\nedition = "2021"\n[dependencies]\n' > Cargo.toml
-        mkdir -p src
-        printf 'fn main() {\n    println!("Hello, world!");\n}\n' > src/main.rs
-
-    - name: Setup Rust
-      uses: ./setup
+    - uses: ./setup
+      with:
+        targets: ${{ matrix.targets }}
 
-    - name: Install
-      run: cargo build
+    - name: Verify toolchain
+      run: |
+        rustup component list --installed | grep '^clippy-'
+        rustup component list --installed | grep '^rustfmt-'
+        rustup target list --installed | grep '^wasm32-unknown-unknown$'
+        cargo build --manifest-path tests/Cargo.toml
+        cargo build --manifest-path tests/Cargo.toml --target wasm32-unknown-unknown
+      shell: bash
+
+    - name: Verify macOS target
+      run: rustup target list --installed | grep '^aarch64-apple-darwin$'
+      shell: bash
+      if: runner.os == 'macOS'

.gitignore

@@ -1,2 +1,3 @@
 AGENTS.md
 ROADMAP.md
+/tests/target/

README.md

@@ -1,7 +1,7 @@
-# node
+# rust
 
-Helper actions for Node projects
+Helper actions for Rust projects
 
-| Name             | Action Reference         | Description                                            |
-| :--------------- | :----------------------- | :----------------------------------------------------- |
-| [setup](./setup) | `actions-ext/rust/setup` | An action to setup a rust compiler and enable caching. |
+| Name             | Action Reference         | Description                                      |
+| :--------------- | :----------------------- | :----------------------------------------------- |
+| [setup](./setup) | `actions-ext/rust/setup` | Configure a Rust toolchain, targets, and caching |

setup/README.md

@@ -1,10 +1,22 @@
-# setup-rust
-An action to setup a rust compiler and enable caching.
+# setup
+
+Configure a Rust toolchain, optional targets and components, and caching.
 
 ## Usage
 
 ```yaml
 - name: Setup Rust
-  uses: actions-ext/rust/setup-rust@c9cdbe5cc8a2485bf2eb22644302559c741ca763
+  uses: actions-ext/rust/setup@3b918cc2cb4a231ad3752f8cc129da5f07626ce2
+  with:
+    targets: wasm32-unknown-unknown
 ```
 
+Only the host target is installed by default. Use `targets` for additional architectures or WASM. Install Cargo tools in your project's development setup.
+
+## Inputs
+
+| Name         | Default          | Description                        |
+| :----------- | :--------------- | :--------------------------------- |
+| `toolchain`  | `stable`         | Rust toolchain to install.         |
+| `components` | `clippy,rustfmt` | Comma-separated rustup components. |
+| `targets`    | Empty            | Comma-separated Rust targets.      |

setup/action.yml

@@ -1,23 +1,26 @@
 name: Setup Rust
-description: 'Ensure Rust compiler and utilities are available, and setup caching'
+description: 'Configure a Rust toolchain, targets, components, and caching'
 
 inputs:
-  kind:
-    type: choice
-    description: "Whether to install just a default target, or all targets (e.g. for during deployments / wheel building)"
-    default: "full"
-    options:
-        - full
-        - wasm
+  toolchain:
+    description: 'Rust toolchain to install'
+    default: 'stable'
+  components:
+    description: 'Comma-separated rustup components to install'
+    default: 'clippy,rustfmt'
+  targets:
+    description: 'Comma-separated Rust targets to install'
+    default: ''
 
 runs:
   using: 'composite'
   steps:
     - name: Set up Rust
       uses: dtolnay/rust-toolchain@02cb101ec7c40f2c49e1d9714d64511d8e1b74de # latest
       with:
-        toolchain: stable
-        components: clippy, rustfmt
+        toolchain: ${{ inputs.toolchain }}
+        components: ${{ inputs.components }}
+        targets: ${{ inputs.targets }}
 
     - name: Configure Cargo cache paths
       run: |
@@ -30,33 +33,11 @@ runs:
     - name: Setup Rust cache
       uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
       with:
-        key: ${{ runner.os }}-${{ inputs.kind }}
+        key: ${{ inputs.toolchain }}-${{ inputs.targets }}
         cache-targets: true
         cache-all-crates: true
         cache-bin: true
         cache-on-failure: true
         cache-directories: |
           .cargo
           .rustup
-
-    - run: |
-        rustup target add aarch64-unknown-linux-gnu
-        rustup target add x86_64-unknown-linux-gnu
-      shell: bash
-      if: ${{ inputs.kind == 'full' && runner.os == 'Linux' }}
-
-    - run: |
-        rustup target add aarch64-apple-darwin
-        rustup target add x86_64-apple-darwin
-      shell: bash
-      if: ${{ inputs.kind == 'full' && runner.os == 'macOS' }}
-
-    - run: |
-        rustup target add x86_64-pc-windows-msvc
-        rustup target add aarch64-pc-windows-msvc
-      shell: bash
-      if: ${{ inputs.kind == 'full' && runner.os == 'Windows' }}
-
-    - run: rustup target add wasm32-unknown-unknown
-      shell: bash
-      if: ${{ inputs.kind == 'wasm' }}

tests/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "rust-action-test"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+path = "src/lib.rs"

tests/src/lib.rs

@@ -0,0 +1,13 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn adds_numbers() {
+        assert_eq!(add(2, 2), 4);
+    }
+}