add incremental lint

Author: denis256

.github/workflows/lint.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
     - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       with:
-        fetch-depth: 1
+        fetch-depth: 0
 
     - name: "Mount tmpfs"
       shell: bash
@@ -89,5 +89,14 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-golangci-lint-
 
+    - name: Fetch main branch
+      if: github.ref != 'refs/heads/main'
+      run: git fetch origin main --depth=1
+
     - name: Lint
-      run: make run-lint
+      run: |
+        if [ "${{ github.ref }}" = "refs/heads/main" ]; then
+          make run-lint
+        else
+          make run-lint-incremental
+        fi

Makefile

@@ -39,6 +39,10 @@ run-lint:
 	@echo "Linting with feature flags: [$(LINT_TAGS)]"
 	GOFLAGS="-tags=$(LINT_TAGS)" golangci-lint run -v --timeout=30m ./...
 
+run-lint-incremental:
+	@echo "Incremental lint vs origin/main with feature flags: [$(LINT_TAGS)]"
+	GOFLAGS="-tags=$(LINT_TAGS)" golangci-lint run -v --timeout=10m --new-from-rev origin/main ./...
+
 run-lint-fix:
 	@echo "Linting with feature flags: [$(LINT_TAGS)]"
 	GOFLAGS="-tags=$(LINT_TAGS)" golangci-lint run -v --timeout=30m --fix ./...
@@ -60,4 +64,4 @@ fuzz:
 		done; \
 	done
 
-.PHONY: help fmt fmtcheck install-pre-commit-hook clean run-lint run-lint-fix fuzz
+.PHONY: help fmt fmtcheck install-pre-commit-hook clean run-lint run-lint-incremental run-lint-fix fuzz