Remove impermanence home-manager module

Too many bugs to deal with unfortunately.

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/user/configs/gui/qalculate/default.nix

@@ -8,7 +8,6 @@
   ...
 }:
 let
-  userConfig = config.users.users.${username};
   hmConfig = config.home-manager.users.${username};
 in
 {
@@ -20,13 +19,12 @@ in
     })
   ];
 
+  environment.persistence."/cache".users.${username}.files = [
+    "${hmConfig.xdg.relativeConfigHome}/qalculate/qalculate-gtk.history"
+  ];
+
   home-manager.users.${username} = {
-    home = {
-      packages = with pkgs; [ qalculate-gtk ];
-      persistence."/cache${userConfig.home}".files = [
-        "${hmConfig.xdg.relativeConfigHome}/qalculate/qalculate-gtk.history"
-      ];
-    };
+    home.packages = with pkgs; [ qalculate-gtk ];
 
     xdg.configFile."qalculate/qalculate-gtk.cfg".source =
       (pkgs.formats.ini { }).generate "qalculate-gtk.cfg"