Adopt the Whitaker Dylint suite in the lint gate and CI

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ jobs:
     env:
       CS_ACCESS_TOKEN: ${{ secrets.CS_ACCESS_TOKEN }}
       CODESCENE_CLI_SHA256: ${{ vars.CODESCENE_CLI_SHA256 }}
+      WHITAKER_INSTALLER_VERSION: '0.2.5'
     steps:
       - name: Check out repository
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v4
@@ -41,6 +42,29 @@ jobs:
       - name: Run ruff
         run: make lint
 
+      - name: Cache Whitaker installer
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        with:
+          path: |
+            ~/.cargo/bin/whitaker-installer
+            ~/.cache/cargo-binstall
+          key: whitaker-installer-${{ runner.os }}-${{ runner.arch }}-${{ env.WHITAKER_INSTALLER_VERSION }}
+
+      - name: Install Whitaker
+        run: |
+          if ! command -v whitaker-installer >/dev/null 2>&1; then
+            if cargo binstall --version >/dev/null 2>&1; then
+              cargo binstall --no-confirm --locked "whitaker-installer@${WHITAKER_INSTALLER_VERSION}"
+            else
+              echo "cargo-binstall unavailable; building whitaker-installer from crates.io"
+              cargo install --locked whitaker-installer --version "${WHITAKER_INSTALLER_VERSION}"
+            fi
+          fi
+          whitaker-installer
+
+      - name: Run Rust lint
+        run: make lint-rust
+
       - name: Run typechecker
         run: make typecheck
 

Makefile

@@ -1,6 +1,8 @@
 MDLINT ?= markdownlint-cli2
 NIXIE ?= nixie
 MDFORMAT_ALL ?= mdformat-all
+CARGO ?= cargo
+WHITAKER ?= whitaker
 RUFF_VERSION ?= 0.15.12
 RUFF = $(UV_ENV) uv tool run --from ruff==$(RUFF_VERSION) ruff
 TOOLS = $(MDFORMAT_ALL) ty $(MDLINT) uv
@@ -17,7 +19,7 @@ PYLINT_PYPY_SHIM_REF ?= 726d09f968b4d729ee4b29c71fc732e744854f3b
 PYLINT_PYPY_SHIM = git+https://github.com/leynos/pylint-pypy-shim.git@$(PYLINT_PYPY_SHIM_REF)
 PYLINT = $(UV_ENV) uv tool run --python $(PYLINT_PYTHON) --from '$(PYLINT_PYPY_SHIM)' pylint-pypy
 
-.PHONY: help all clean build build-release lint fmt check-fmt \
+.PHONY: help all clean build build-release lint lint-rust fmt check-fmt \
         markdownlint nixie test typecheck $(TOOLS) $(VENV_TOOLS)
 
 .DEFAULT_GOAL := all
@@ -79,6 +81,10 @@ lint: uv ## Run linters
 	$(RUFF) check
 	$(PYLINT) $(PYLINT_TARGETS)
 
+lint-rust: ## Lint the Rust workspace (Clippy and Whitaker)
+	$(CARGO) clippy --manifest-path rust/Cargo.toml --all-targets --all-features -- -D warnings
+	cd rust && RUSTFLAGS="-D warnings" $(WHITAKER) --all -- --all-targets --all-features
+
 typecheck: build ty ## Run typechecking
 	ty --version
 	ty check

docs/developers-guide.md

@@ -114,6 +114,11 @@ For Rust extension changes, also run:
 
 - `cargo fmt --manifest-path rust/Cargo.toml --check`: verify Rust formatting.
 - `cargo check --manifest-path rust/Cargo.toml`: typecheck the Rust workspace.
+- `make lint-rust`: run Clippy and the
+  [Whitaker Dylint suite](https://github.com/leynos/whitaker) over the Rust
+  workspace with warnings denied. The `whitaker` wrapper must be on `PATH`;
+  install it with
+  `cargo install --locked whitaker-installer && whitaker-installer`.
 
 For Markdown-only changes, run: