gpt4all: properly handle newlines in system prompt

nix/etcnixos/system-mreow.nix

@@ -111,17 +111,15 @@
   security.pam.services.swaylock = { };
 
   system.activationScripts = {
-
     "secureboot-keys".text =
       let
         secureboot_path = "/etc/secureboot";
       in
       ''
         #!/bin/sh
-        rm -fr ${secureboot_path}
+        rm -fr ${secureboot_path} || true
         mkdir -p ${secureboot_path}
         ${pkgs.gnutar}/bin/tar xf /etc/nixos/secrets/secureboot.tar -C ${secureboot_path}
       '';
-
   };
 }