Merge pull request #36 from artichoke/lopopolo/setup-miri

Add setup miri action

.github/labels.yaml

@@ -23,6 +23,9 @@
 - name: "A-minimal-versions"
   color: "f7e101"
   description: "Area: Minimal versions configurable and nightly toolchain."
+- name: "A-miri"
+  color: "f7e101"
+  description: "Area: Miri configurable toolchain."
 - name: "A-performance"
   color: "f7e101"
   description: "Area: Performance improvements and optimizations."

.github/workflows/ci.yaml

@@ -223,6 +223,22 @@ jobs:
       - name: Check that nightly rustfmt is installed
         run: cargo +nightly fmt --version --verbose
 
+  test-setup-miri-toolchain:
+    name: Test setup miri toolchain action
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          path: setup-rust-action
+
+      - name: Setup stable audit toolchain
+        uses: ./setup-rust-action/miri
+
+      - name: Check that active toolchain is nightly
+        run: |
+          [[ "$(rustup show active-toolchain)" == nightly-* ]]
+
   test-setup-rustdoc-toolchain:
     name: Test setup rustdoc toolchain action
     runs-on: ubuntu-latest

miri/action.yaml

@@ -0,0 +1,41 @@
+---
+name: "Miri Toolchain"
+description: "Setup a nightly Rust toolchain with miri and rust-src so testing with Miri works"
+
+inputs:
+  toolchain:
+    description: "Rustup toolchain"
+    required: true
+    default: "nightly"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install ${{ inputs.toolchain }} toolchain
+      shell: bash
+      run: rustup toolchain install "${{ inputs.toolchain }}" --profile minimal --component miri --component rust-src
+
+    - name: Update ${{ inputs.toolchain }} toolchain
+      shell: bash
+      run: rustup update "${{ inputs.toolchain }}"
+
+    - name: Set default toolchain to ${{ inputs.toolchain }}
+      shell: bash
+      # https://rust-lang.github.io/rustup/overrides.html
+      run: echo 'RUSTUP_TOOLCHAIN=${{ inputs.toolchain }}' >> "$GITHUB_ENV"
+
+    - name: Show rustup version
+      shell: bash
+      run: rustup -Vv
+
+    - name: Show ${{ inputs.toolchain }} rustc version
+      shell: bash
+      run: rustc +${{ inputs.toolchain }} -Vv
+
+    - name: Show ${{ inputs.toolchain }} cargo version
+      shell: bash
+      run: cargo +${{ inputs.toolchain }} version --verbose
+
+    - name: Show ${{ inputs.toolchain }} miri version
+      shell: bash
+      run: cargo +${{ inputs.toolchain }} miri --version