Separate linter test to own workflow to only run it when necessary

Signed-off-by: Timo Sand <timo.sand@f-secure.com>

Author: deiga

.github/workflows/ci-linter.yaml

@@ -0,0 +1,42 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - release-v*
+    paths:
+      - tools/tfproviderlint/**
+  pull_request:
+    branches:
+      - main
+      - release-v*
+    paths:
+      - tools/tfproviderlint/**
+
+concurrency:
+  group: ci-linter-${{ github.ref }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  test:
+    name: Custom Linter Tests
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - name: Set-up Go
+        uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
+        with:
+          go-version-file: go.mod
+          cache: true
+          cache-dependency-path: |
+            go.sum
+            tools/tfproviderlint/go.sum
+      - run: make test-tools

.github/workflows/ci.yaml

@@ -39,7 +39,6 @@ jobs:
           cache: true
       - run: make build -o lintcheck
       - run: make test
-      - run: make test-tools
   golangci:
     name: lint
     runs-on: ubuntu-latest
@@ -71,6 +70,10 @@ jobs:
         with:
           go-version-file: go.mod
           cache: true
+          cache-dependency-path: |
+            go.sum
+            tools/tfproviderlint/go.sum
+            custom-gcl
       - run: make .golangci.new.yml
       - name: golangci-lint
         uses: golangci/golangci-lint-action@1e7e51e771db61008b38414a730f564565cf7c20 # v9.2.0

tools/tfproviderlint/GNUmakefile

@@ -2,10 +2,10 @@ test_go_sums = $(patsubst %/go.mod,%/go.sum,$(wildcard checks/*/testdata/go.mod)
 
 .SECONDEXPANSION:                                                                                                                                                                                                                                                                                                        
 checks/%/testdata/go.sum: checks/%/testdata/go.mod $$(wildcard checks/$$*/*.go)
-	cd $(dir $@) && go mod tidy
+	@cd $(dir $@) && go mod tidy
 
 go.sum: go.mod $(shell find checks -name '*.go' -maxdepth 2)
-	go mod tidy
+	@go mod tidy
 
 test: go.sum $(test_go_sums)
 	CGO_ENABLED=0 go test ./... -v -count=1 -timeout=30s -parallel=4