collapse gui and identity arguments

modules/services/keybase.nix

@@ -1,10 +1,10 @@
-{ pkgs, lib, user, gui, ... }: {
+{ pkgs, lib, identity, gui, ... }: {
 
   services.keybase.enable = true;
   services.kbfs.enable = true;
 
-  home-manager.users.${user} = {
-    home.packages = [ (lib.mkIf gui pkgs.keybase-gui) ];
+  home-manager.users.${identity.user} = {
+    home.packages = [ (lib.mkIf gui.enable pkgs.keybase-gui) ];
     home.file = let
       ignorePatterns = ''
         keybase/