ci: integrate clippy

.github/workflows/main.yml

@@ -10,7 +10,7 @@ on:
   merge_group:
 
 jobs:
-  CI:
+  build:
     runs-on: ubuntu-latest
 
     env:
@@ -58,14 +58,34 @@ jobs:
 
         laze build --partition hash:${{ matrix.partition }} --builders microbit-v2,nrf52840dk,rpi-pico,rpi-pico-w -g
 
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out repository code
+      uses: actions/checkout@v4
+
+    - name: Install toolchain
+      uses: dtolnay/rust-toolchain@nightly
+      with:
+        components: clippy
+
+    - name: rust cache
+      uses: Swatinem/rust-cache@v2
+
+    # TODO: we'll eventually want to check the whole worspace with --workspace
+    # TODO: we'll eventually want to check relevant feature combinations
+    # TODO: we may want to use --no-deps as well
+    - run: cargo clippy --verbose --locked -p riot-rs-embassy
+
   CI-success:
       if: ${{ always() }}
       runs-on: ubuntu-latest
       name: Final Results
-      needs: [CI]
+      needs: [build]
       steps:
         - run: |
-            result="${{ needs.CI.result }}"
+            result="${{ needs.build.result }}"
             if [[ $result == "success" || $result == "skipped" ]]; then
               exit 0
             else