flake.nix

@@ -28,8 +28,8 @@
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    firefox-addons = {
-      url = "gitlab:rycee/nur-expressions?dir=pkgs/firefox-addons";
+    nur = {
+      url = "github:nix-community/NUR";
       inputs.nixpkgs.follows = "nixpkgs";
     };
     zen-browser = {

home/programs/zen/default.nix

@@ -8,10 +8,10 @@
     enable = true;
     profiles.default = {
       extensions = {
-        packages = with inputs.firefox-addons.packages.${pkgs.stdenv.hostPlatform.system}; [
+        packages = with pkgs.nur.repos.rycee.firefox-addons; [
           ublock-origin
           video-downloadhelper
-          firefox-multi-account-containers
+          multi-account-containers
           noscript
         ];
       };

nixos/nix.nix

@@ -22,10 +22,13 @@ in {
       ];
     }
   ];
-  nixpkgs.config = {
+  nixpkgs = {
+    config = {
       allowUnfree = true;
       allowBroken = false;
     };
+    overlays = [inputs.nur.overlays.default];
+  };
   nix = {
     nixPath = ["nixpkgs=${inputs.nixpkgs}"];
     channel.enable = false;