Test against Go stable/oldstable, upgrade staticcheck to 2026.2.2, let Renovate keep it current

.github/workflows/testing.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        go: [ '1.20', '1.19' ]
+        go: [stable, oldstable]
 
     steps:
       - uses: actions/checkout@v6
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        go: [ '1.20', '1.19' ]
+        go: [stable, oldstable]
 
     steps:
       - uses: actions/checkout@v6
@@ -48,7 +48,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        go: [ '1.20', '1.19' ]
+        go: [stable, oldstable]
 
     steps:
       - uses: actions/checkout@v6
@@ -59,7 +59,8 @@ jobs:
       - name: Run staticcheck
         uses: dominikh/staticcheck-action@v1.4.0
         with:
-          version: "2023.1.3"
+          # renovate: datasource=github-releases depName=dominikh/go-tools
+          version: "2026.2.2"
           install-go: false
           cache-key: ${{ matrix.go }}
 
@@ -68,7 +69,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        go: [ '1.20', '1.19' ]
+        go: [stable, oldstable]
 
     # See https://docs.github.com/en/actions/using-containerized-services/creating-redis-service-containers
     services:

Makefile

@@ -1,5 +1,8 @@
 .DEFAULT_GOAL := help
 
+# renovate: datasource=github-releases depName=dominikh/go-tools
+STATICCHECK_VERSION := 2026.2.2
+
 .PHONY: help
 help: ## Outputs the help.
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
@@ -18,7 +21,7 @@ fmt: ## Runs go fmt (to check for go coding guidelines).
 
 .PHONY: staticcheck
 staticcheck: ## Runs static analysis to prevend bugs, foster code simplicity, performance and editor integration.
-	go get -u honnef.co/go/tools/cmd/staticcheck
+	go install honnef.co/go/tools/cmd/staticcheck@$(STATICCHECK_VERSION)
 	staticcheck ./...
 
 .PHONY: all

renovate.json

@@ -0,0 +1,46 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:best-practices"
+  ],
+  "timezone": "Europe/Berlin",
+  "schedule": [
+    "* 0-4 * * 1"
+  ],
+  "semanticCommits": "disabled",
+  "postUpdateOptions": [
+    "gomodTidy"
+  ],
+  "customManagers": [
+    {
+      "customType": "regex",
+      "description": "Update the staticcheck release passed to dominikh/staticcheck-action, which the github-actions manager does not read",
+      "managerFilePatterns": [
+        "/^\\.github/workflows/.+\\.ya?ml$/"
+      ],
+      "matchStrings": [
+        "# renovate: datasource=(?<datasource>[a-z-]+?) depName=(?<depName>[^\\s]+?)\\s+version: \"(?<currentValue>[^\"]+)\""
+      ],
+      "versioningTemplate": "regex:^(?<major>\\d+)\\.(?<minor>\\d+)(\\.(?<patch>\\d+))?$"
+    },
+    {
+      "customType": "regex",
+      "description": "Update the staticcheck release installed by the Makefile, so local runs always match CI",
+      "managerFilePatterns": [
+        "/^Makefile$/"
+      ],
+      "matchStrings": [
+        "# renovate: datasource=(?<datasource>[a-z-]+?) depName=(?<depName>[^\\s]+?)\\s+STATICCHECK_VERSION := (?<currentValue>\\S+)"
+      ],
+      "versioningTemplate": "regex:^(?<major>\\d+)\\.(?<minor>\\d+)(\\.(?<patch>\\d+))?$"
+    }
+  ],
+  "packageRules": [
+    {
+      "description": "Batch routine GitHub Actions updates into one weekly pull request, but keep major bumps separate because they usually need workflow changes",
+      "matchManagers": ["github-actions"],
+      "matchUpdateTypes": ["minor", "patch", "digest", "pin"],
+      "groupName": "GitHub Actions"
+    }
+  ]
+}