Ensure cargo fmt Is executed in CI #248 (#249)

.github/workflows/fmt.yml

@@ -0,0 +1,24 @@
+name: Format check
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    paths:
+      - 'src/**.rs'
+      - Cargo.toml
+      - Cargo.lock
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Check formatting
+      run: |
+        make fmt

.github/workflows/lint.yml

@@ -20,5 +20,4 @@ jobs:
 
     - name: Lint
       run: |
-        cargo fmt
         make check

Makefile

@@ -5,6 +5,7 @@ RUST_BACKTRACE=full
 ci: # Checks same as CI
 	@make test-ci; \
 	make check; \
+	make fmt; \
 	make spell-check
 
 .PHONY: tools
@@ -60,6 +61,10 @@ run:
 build:
 	@cargo build
 
+.PHONY: fmt
+ fmt:
+	@cargo fmt -- --check
+
 .PHONY: check
  check:
 	@cargo clippy -- -D warnings