feat: allow extra hooks in local config

internal/config/load.go

@@ -186,7 +186,8 @@ func unmarshalConfigs(base, extra *viper.Viper, c *Config) error {
 
 	// For extra non-git hooks.
 	// This behavior may be deprecated in next versions.
-	for _, maybeHook := range base.AllKeys() {
+	// Notice that with append we're allowing extra hooks to be added in local config
+	for _, maybeHook := range append(base.AllKeys(), extra.AllKeys()...) {
 		if !hookKeyRegexp.MatchString(maybeHook) {
 			continue
 		}

internal/config/load_test.go

@@ -152,6 +152,43 @@ tests:
     tests:
       run: go test ./...
 
+lints:
+  scripts:
+    "linter.sh":
+      runner: bash
+`,
+			result: &Config{
+				SourceDir:      DefaultSourceDir,
+				SourceDirLocal: DefaultSourceDirLocal,
+				Colors:         DefaultColorsEnabled,
+				Hooks: map[string]*Hook{
+					"tests": {
+						Parallel: false,
+						Commands: map[string]*Command{
+							"tests": {
+								Run: "go test ./...",
+							},
+						},
+					},
+					"lints": {
+						Scripts: map[string]*Script{
+							"linter.sh": {
+								Runner: "bash",
+							},
+						},
+					},
+				},
+			},
+		},
+		{
+			name: "with extra hooks only in local config",
+			global: `
+tests:
+  commands:
+    tests:
+      run: go test ./...
+`,
+			local: `
 lints:
   scripts:
     "linter.sh":