update config

home/programs/git/default.nix

@@ -1,12 +1,14 @@
-{ config, ... }:
+{ config, pkgs, ... }:
 let
   username = config.var.git.username;
   email = config.var.git.email;
 in {
+  home.packages = with pkgs; [ tea ];
   programs.git = {
     enable = true;
     userName = username;
     userEmail = email;
+    signing.key = "D8EDD65BCB54AC8719BE4EBD8D5D880EB08F1544";
     ignores = [
       ".cache/"
       ".DS_Store"
@@ -23,6 +25,7 @@ in {
       init.defaultBranch = "main";
       push.autoSetupRemote = true;
       color.ui = "1";
+      commit.gpgSign = true;
     };
     aliases = {
       essa = "push --force";