Add dia

hosts/common/home.nix

@@ -0,0 +1,22 @@
+{
+  identities,
+  primaryUser,
+  ...
+}:
+let
+  user = identities.users.${primaryUser};
+in
+{
+  programs.git = {
+    signing = {
+      # Will be available on remote machines via SSH agent (Secretive).
+      key = "key::" + user.sign."sign@jupiter".publicKey;
+      signByDefault = true;
+    };
+
+    settings.user = {
+      name = "Katarina Sheremet";
+      inherit (user) email;
+    };
+  };
+}