feat: allow running only a specific linter without modifying the file configuration (golangci#4438)

Author: ldez

pkg/commands/flagsets.go

@@ -28,6 +28,9 @@ func setupLintersFlagSet(v *viper.Viper, fs *pflag.FlagSet) {
 	fs.StringSliceP("presets", "p", nil,
 		color.GreenString(fmt.Sprintf("Enable presets (%s) of linters. Run 'golangci-lint help linters' to see "+
 			"them. This option implies option --disable-all", strings.Join(lintersdb.AllPresets(), "|"))))
+
+	fs.StringSlice("enable-only", nil,
+		color.GreenString("Override linters configuration section to only run the specific linter(s)")) // Flags only.
 }
 
 func setupRunFlagSet(v *viper.Viper, fs *pflag.FlagSet) {

pkg/config/loader.go

@@ -61,6 +61,27 @@ func (l *Loader) Load() error {
 
 	l.handleGoVersion()
 
+	err = l.handleEnableOnlyOption()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (l *Loader) handleEnableOnlyOption() error {
+	only, err := l.fs.GetStringSlice("enable-only")
+	if err != nil {
+		return err
+	}
+
+	if len(only) > 0 {
+		l.cfg.Linters = Linters{
+			Enable:     only,
+			DisableAll: true,
+		}
+	}
+
 	return nil
 }
 
@@ -73,13 +94,14 @@ func (l *Loader) handleGoVersion() {
 
 	l.cfg.LintersSettings.ParallelTest.Go = l.cfg.Run.Go
 
-	trimmedGoVersion := trimGoVersion(l.cfg.Run.Go)
-
-	l.cfg.LintersSettings.Gocritic.Go = trimmedGoVersion
 	if l.cfg.LintersSettings.Gofumpt.LangVersion == "" {
 		l.cfg.LintersSettings.Gofumpt.LangVersion = l.cfg.Run.Go
 	}
 
+	trimmedGoVersion := trimGoVersion(l.cfg.Run.Go)
+
+	l.cfg.LintersSettings.Gocritic.Go = trimmedGoVersion
+
 	// staticcheck related linters.
 	if l.cfg.LintersSettings.Staticcheck.GoVersion == "" {
 		l.cfg.LintersSettings.Staticcheck.GoVersion = trimmedGoVersion