feat(teidesu): added git config

users/teidesu/common.nix

@@ -2,6 +2,7 @@
   imports = [
     inputs.nix-index-database.hmModules.nix-index
     ./zsh.nix
+    ./git.nix
   ];
 
   home.stateVersion = "23.11";

users/teidesu/git.nix

@@ -0,0 +1,25 @@
+{ pkgs, ... }: 
+
+let 
+  isDarwin = pkgs.stdenv.isDarwin;
+in {
+  programs.git = {
+    enable = true;
+    userName = "alina sireneva";
+    userEmail = "alina@tei.su";
+    signing = {
+      key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHXaJrbD5SHp3HDtRX7YxrjO7wpcoY/L41Oc78IdT/l4";
+      signByDefault = true;
+    };
+
+    extraConfig = {
+      gpg.format = "ssh";
+      "gpg \"ssh\"" = if isDarwin then {
+        program = "/Applications/1Password.app/Contents/MacOS/op-ssh-sign";
+      } else {
+        defaultKeyCommand = "ssh-add -L";
+      };
+      push.autoSetupRemote = "true";
+    };
+  };
+}