diff --git a/flake.nix b/flake.nix
index df9f62d..9fe5330 100644
--- a/flake.nix
+++ b/flake.nix
@@ -15,7 +15,7 @@
     nix-vscode-extensions.url = "github:nix-community/nix-vscode-extensions";
     catppuccin-vsc.url = "https://flakehub.com/f/catppuccin/vscode/*.tar.gz";
   };
-  outputs = { nixpkgs, home-manager, catppuccin, ... }@inputs:
+  outputs = { nixpkgs, home-manager, ... }@inputs:
     let
       system = "x86_64-linux";
       pkgs = import nixpkgs {
@@ -38,7 +38,7 @@
             ./nixos/catppuccin.nix
             ./nixos/configuration.nix
             ./nixos/development.nix
-            ./nixos/environment.nix
+            #./nixos/environment.nix
             ./nixos/gaming.nix
             ./nixos/git.nix
             ./nixos/gui-pkgs.nix
@@ -63,7 +63,7 @@
             }
 
             # Catppuccin theme
-            catppuccin.nixosModules.catppuccin
+            inputs.catppuccin.nixosModules.catppuccin
             {
               catppuccin.enable = true;
               catppuccin.flavor = "mocha";
@@ -88,7 +88,7 @@
                   imports = [
                     ./home-manager/cswimr.nix
                     ./home-manager/vscode.nix
-                    catppuccin.homeManagerModules.catppuccin
+                    inputs.catppuccin.homeManagerModules.catppuccin
                     {
                       catppuccin.enable = true;
                       catppuccin.flavor = "mocha";
diff --git a/nixos/gui-pkgs.nix b/nixos/gui-pkgs.nix
index a508549..8873d88 100644
--- a/nixos/gui-pkgs.nix
+++ b/nixos/gui-pkgs.nix
@@ -1,4 +1,4 @@
-{ pkgs, lib, ... }:
+{ pkgs, inputs, system, lib, ... }:
 let
   kdePackages = with pkgs.kdePackages; [ plasma-browser-integration ];
   packages = with pkgs; [
@@ -8,11 +8,13 @@ let
     ytmdesktop
     ktailctl
     wl-clipboard
-    # we install xdg-desktop-portal-gtx so theming works from kde
+    # we install xdg-desktop-portal-gtk so GTK theming works in KDE Plasma
     xdg-desktop-portal-gtk
   ];
+  flakePackages = with inputs; [ zen-browser.packages.${system}.specific ];
 in {
-  environment.systemPackages = lib.lists.unique (kdePackages ++ packages);
+  environment.systemPackages =
+    lib.lists.unique (kdePackages ++ packages ++ flakePackages);
 
   programs.partition-manager.enable = true;
 
diff --git a/nixos/pkg.nix b/nixos/pkg.nix
index 539cc38..bc462be 100755
--- a/nixos/pkg.nix
+++ b/nixos/pkg.nix
@@ -1,7 +1,8 @@
-{ pkgs, ... }: {
-  # List packages installed in system profile. To search, run:
+{ pkgs, lib, inputs, system, ... }:
+let
+  # List of packages installed in system profile. To search, run:
   # $ nix search wget
-  environment.systemPackages = with pkgs; [
+  packages = with pkgs; [
     wget
     curl
     git
@@ -50,6 +51,9 @@
     nodejs
     corepack
   ];
+  flakePackages = with inputs; [ compose2nix.packages.${system}.default ];
+in {
+  environment.systemPackages = lib.lists.unique (packages ++ flakePackages);
 
   # install docker
   virtualisation.docker = { enable = true; };