ci: install Rust before the macOS compositor build in build.yml

Author: EtienneLescot

.github/workflows/build.yml

@@ -430,6 +430,11 @@ jobs:
           restore-keys: |
             cargo-macos-${{ matrix.arch }}-
 
+      - name: Install Rust toolchain
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable --target ${{ matrix.arch == 'x64' && 'x86_64' || 'aarch64' }}-apple-darwin
+          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
+
       - name: Build Metal compositor addon
         run: npm run build:native:compositor:mac