Migrate git configuration

homes/aarch64-darwin/yadunut@yadunut-mbp/default.nix

@@ -17,14 +17,11 @@
   home.packages = [
     # pkgs.dive
     pkgs.entr
-    pkgs.lazygit
     pkgs.jq
     pkgs.just
     pkgs.rsync
-    pkgs.gh
     pkgs.claude-code
     pkgs.devenv
-    pkgs.jujutsu
     pkgs.dive
   ];
 
@@ -39,25 +36,16 @@
     "/opt/homebrew/bin"
   ];
 
-  programs.zsh.shellAliases = {
-    lg = "lazygit";
-  };
-
   zsh.enable = true;
+  git = {
+    enable = true;
+    gpgProgram = "/Applications/1Password.app/Contents/MacOS/op-ssh-sign";
+    signingKey = "~/.ssh/yadunut_ed25519.pub";
+  };
 
   # Let Home Manager install and manage itself.
   programs.home-manager.enable = true;
 
-  programs.git.extraConfig = {
-    gpg.ssh.program = "/Applications/1Password.app/Contents/MacOS/op-ssh-sign";
-    user.signingkey = "~/.ssh/yadunut_ed25519.pub";
-    core.excludesFile = "~/.gitignore_global";
-  };
-
-  programs.gh = {
-    enable = true;
-  };
-
   targets.darwin = {
     defaults."com.apple.dock".autohide = true;
     defaults."com.apple.finder".AppleShowAllFiles = true;