fix: pre-commit-hook config

.gitignore

@@ -1,2 +1,3 @@
 /result
 .direnv
+.pre-commit-config.yaml

flake.nix

@@ -106,6 +106,7 @@
       perSystem = {
         pkgs,
         self',
+        config,
         ...
       }: {
         # Configure treefmt
@@ -130,8 +131,12 @@
         in
           builtins.listToAttrs (builtins.map toPackage pkgFiles);
         # Create a useable devshell for me
-        devshells.default = {
+        devShells.default = pkgs.mkShell {
           name = "dev";
+          shellHook = ''
+            ${config.pre-commit.installationScript}
+            echo 1>&2 "Welcome to the development shell!"
+          '';
           packages = [
             pkgs.nil
             pkgs.pre-commit