diff --git a/default.nix b/default.nix
index bae2479..9034eeb 100644
--- a/default.nix
+++ b/default.nix
@@ -11,14 +11,17 @@ let
     config = {allowUnsupportedSystem = true; };
   });
 
-  config = (import ./lib/merge-modules.nix) [
-    ./modules/base.nix
-    device.module
-    liminix-config
-    ./modules/s6
-    ./modules/users.nix
-    ./modules/outputs.nix
-  ] pkgs;
+  config = (pkgs.lib.evalModules {
+    modules = [
+      { _module.args = { inherit pkgs; lib = pkgs.lib; }; }
+      ./modules/base.nix
+      device.module
+      liminix-config
+      ./modules/s6
+      ./modules/users.nix
+      ./modules/outputs.nix
+    ];
+  }).config;
 
   borderVm = ((import <nixpkgs/nixos/lib/eval-config.nix>) {
     system = builtins.currentSystem;
diff --git a/lib/merge-modules.nix b/lib/merge-modules.nix
deleted file mode 100644
index 5b93339..0000000
--- a/lib/merge-modules.nix
+++ /dev/null
@@ -1,8 +0,0 @@
-modules : pkgs :
-let evalModules = (import <nixpkgs/lib>).evalModules;
-in (evalModules {
-  modules =
-    [
-      { _module.args = { inherit pkgs; lib = pkgs.lib; }; }
-    ] ++ modules;
-}).config
diff --git a/tests/module/configuration.nix b/tests/module/configuration.nix
deleted file mode 100644
index eef2a8a..0000000
--- a/tests/module/configuration.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{ config, pkgs, ... } :
-{
-  imports = [ ./defs.nix ./module.nix ];
-  config = {
-    services.a.enable = true;
-    services.b.enable = true;
-
-    systemPackages = [ pkgs.hello ] ;
-  };
-}
diff --git a/tests/module/defs.nix b/tests/module/defs.nix
deleted file mode 100644
index 5ca3e29..0000000
--- a/tests/module/defs.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ lib, ...}:
-let inherit (lib) mkEnableOption mkOption types;
-in {
-  options = {
-    services.a = {
-      enable = mkEnableOption "hello service";
-    };
-    services.b = {
-      enable = mkEnableOption "other service";
-    };
-    services.z = mkOption {   };
-    systemPackages = mkOption {
-      type = types.listOf types.package;
-    };
-  };
-}
diff --git a/tests/module/module.nix b/tests/module/module.nix
deleted file mode 100644
index 69b4817..0000000
--- a/tests/module/module.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-{ config, pkgs, ... } :
-{
-  services.z = pkgs.figlet;
-
-  systemPackages = [ pkgs.units ] ;
-}
diff --git a/tests/module/run.sh b/tests/module/run.sh
deleted file mode 100755
index 37010d5..0000000
--- a/tests/module/run.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-set -e
-NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1 nix-build --arg device "import <liminix/devices/qemu>" test.nix
diff --git a/tests/module/test.nix b/tests/module/test.nix
deleted file mode 100644
index e3d72ba..0000000
--- a/tests/module/test.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ device }:
-let
-  overlay = import <liminix/overlay.nix> ;
-  nixpkgs = import <nixpkgs> ( device.system // {overlays = [overlay]; });
-  inherit (nixpkgs) lib pkgs;
-  inherit (lib.asserts) assertMsg;
-  config =
-    (import <liminix/merge-modules.nix>) [./configuration.nix] pkgs;
-  res1 = assertMsg
-    # check we have packages from both modules
-    (config.systemPackages == ( with pkgs; [ units hello ])) "failed";
-  res2 = let s = config.services;
-         in assertMsg (s.a.enable && s.b.enable && (s.z != null) ) "failed";
-in pkgs.writeText "foo" ''
-   ${if res1 then "OK" else "not OK"}
-   ${if res2 then "OK" else "not OK"}
-''