Add custom impermanence module

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

hosts/common/user/configs/console/sops/default.nix

@@ -1,24 +1,18 @@
 {
-  username ? throw "username argument is required",
+  user ? throw "user argument is required",
+  home ? throw "home argument is required",
 }:
+{ config, inputs, ... }:
 {
-  config,
-  inputs,
-  lib,
-  ...
-}:
-let
-  userConfig = config.users.users.${username};
-  hmConfig = config.home-manager.users.${username};
-  sopsKeyPath = "${hmConfig.xdg.relativeConfigHome}/sops-nix/key.txt";
-in
-{
-  environment.persistence."/persist".users.${username}.files = [ sopsKeyPath ];
+  environment.persistence."/persist"."${home}/.config/sops-nix/key.txt" = { };
 
-  home-manager.users.${username} = {
+  home-manager.users.${user} = {
     imports = [ inputs.sops-nix.homeManagerModules.sops ];
 
-    sops.age.keyFile = "${userConfig.home}/${sopsKeyPath}";
-    home.sessionVariables.SOPS_AGE_KEY_FILE = "${userConfig.home}/${sopsKeyPath}";
+    sops.age.keyFile = "${home}/.config/sops-nix/key.txt";
+    home.sessionVariables.SOPS_AGE_KEY_FILE = "${home}/.config/sops-nix/key.txt";
+    systemd.user.services.sops-nix.Unit.After = [
+      config.environment.persistence."/persist"."${home}/.config/sops-nix/key.txt".mount
+    ];
   };
 }