fix(steam): Impermanence + Steam

modules/nixos/steam.nix

@@ -4,6 +4,16 @@ let cfg = config.sydnix.steam;
 in {
   options.sydnix.steam = {
     enable = lib.mkEnableOption "Steam";
+    impermanenceUsers = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [];
+      description = ''
+        A list of users for which ~/.local/share/Steam shall be persisted.  This
+        is a disgusting hack to get around an issue with Impermanence's
+        home-manager module.
+        https://github.com/nix-community/impermanence/issues/165#issuecomment-2537723929
+      '';
+    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -28,5 +38,14 @@ in {
       enable = true;
       enable32Bit = true;
     };
+
+    environment.persistence.${config.sydnix.impermanence.persistDirectory}.users =
+      builtins.listToAttrs
+        (builtins.map
+          (user: {
+            name = user;
+            value.directories = [".local/share/Steam"];
+          })
+          cfg.impermanenceUsers);
   };
 }