Performance test

.github/workflows/rust.yml

@@ -18,7 +18,12 @@ jobs:
     - uses: actions/checkout@v4
     - name: Install dependencies
       run: sudo apt-get update && sudo apt-get install -y pkg-config libasound2-dev
+    # --workspace, not the default. Without it cargo only builds and tests the
+    # root `iris` package, so iris-gui was never compiled here at all and its
+    # tests never ran — a GUI-only breakage could not turn this red. It needs no
+    # extra system packages: wayland, X11 and GL are dlopen'd at runtime, so the
+    # only thing it links is libasound, which is already installed above.
     - name: Build
-      run: cargo build --verbose
+      run: cargo build --workspace --verbose
     - name: Run tests
-      run: cargo test --verbose
+      run: cargo test --workspace --verbose