docs: mention alternative implementations, like prek

Author: sandydoo

README.md

@@ -13,6 +13,8 @@
 
 - Run hooks **as part of development** and **during CI**
 
+- Support for alternative `pre-commit` implementations, like [prek](https://github.com/j178/prek).
+
 ## Getting started
 
 ### devenv.sh
@@ -51,6 +53,9 @@
       exec = "on-pre-commit.sh";
     };
   };
+
+  # Use alternative pre-commit implementations
+  git-hooks.package = pkgs.prek;
 }
 ```
 

modules/pre-commit.nix

@@ -169,10 +169,8 @@ in
             ''
               The `pre-commit` package to use.
             '';
-          defaultText =
-            lib.literalExpression or literalExample ''
-              pkgs.pre-commit
-            '';
+          defaultText = lib.literalExpression "pkgs.pre-commit";
+          example = lib.literalExpression "pkgs.prek";
         };
 
       gitPackage =