diff --git a/system/core.nix b/system/core.nix
index ff9e3f4..bbf510f 100644
--- a/system/core.nix
+++ b/system/core.nix
@@ -93,4 +93,12 @@ in
     layout = "us";
     variant = "euro";
   };
+
+  # Some programs need SUID wrappers, can be configured further or are
+  # started in user sessions.
+  # programs.mtr.enable = true;
+  programs.gnupg.agent = {
+    enable = true;
+    enableSSHSupport = true;
+  };
 }
\ No newline at end of file