penguin packages and git setup

homes/x86_64-linux/cs3223@penguin/default.nix

@@ -5,9 +5,17 @@
   ...
 }:
 {
-  git.enable = true;
+  git = {
+    enable = true;
+    signingKey = "~/.ssh/id_ed25519.pub";
+  };
   zsh.enable = true;
   nushell.enable = true;
+  neovim.enable = true;
+
+  home.packages = with pkgs; [
+    clang-tools
+  ];
 
   home.stateVersion = "25.11";
   programs.home-manager.enable = true;