update

modules/home-manager/git.nix

@@ -11,9 +11,13 @@
     git = {
       enable = true;
       settings = {
+        gpg = {
+          format = "ssh";
+        };
         user = {
           name = "Michael Thomson";
-          email = "michael@michaelthomson.dev";
+          email = "me@michaelthomson.dev";
+          signingkey = "~/.ssh/id_rsa.pub";
         };
         column = {
           ui = "auto";