Update devenv stuff

devenv.yaml

@@ -1,15 +1,8 @@
-# yaml-language-server: $schema=https://devenv.sh/devenv.schema.json
 inputs:
+  git-hooks:
+    url: github:cachix/git-hooks.nix
+    inputs:
+      nixpkgs:
+        follows: nixpkgs
   nixpkgs:
-    url: github:cachix/devenv-nixpkgs/rolling
-
-# If you're using non-OSS software, you can set allowUnfree to true.
-# allowUnfree: true
-
-# If you're willing to use a package that's vulnerable
-# permittedInsecurePackages:
-#  - "openssl-1.1.1w"
-
-# If you have more than one devenv you can merge them
-# imports:
-#  - ./backend
+    url: github:NixOS/nixpkgs/nixos-25.11