add git option

home/modules/git.nix

@@ -0,0 +1,54 @@
+{ config, lib, ... }:
+{
+  options = {
+    youthlic.programs.git = {
+      email = lib.mkOption {
+        type = lib.types.str;
+        description = ''
+          git email
+        '';
+      };
+      name = lib.mkOption {
+        type = lib.types.str;
+        example = ''youthlic'';
+        description = ''
+          git name
+        '';
+      };
+      signKey = lib.mkOption {
+        type = lib.types.addCheck (lib.types.nullOr lib.types.str) (
+          x: (x == null || config.youthlic.programs.gpg.enable)
+        );
+        default = null;
+        description = ''
+          key fingerprint for sign commit
+        '';
+      };
+    };
+  };
+  config =
+    let
+      cfg = config.youthlic.programs.git;
+    in
+    {
+      programs.lazygit = {
+        enable = true;
+      };
+      programs.git = lib.mkMerge [
+        {
+          enable = true;
+          userEmail = cfg.email;
+          userName = cfg.name;
+          delta = {
+            enable = true;
+          };
+        }
+        (lib.mkIf (cfg.signKey != null) {
+          signing = {
+            signByDefault = true;
+            key = cfg.signKey;
+          };
+        })
+      ];
+    };
+}