fix: do not redefine pkgs and lim for levitated system

Signed-off-by: Raito Bezarius <masterancpp@gmail.com>

pkgs/levitate/default.nix

@@ -57,7 +57,6 @@ let
       };
       eval = lib.evalModules {
         modules = [
-          { _module.args = { inherit pkgs; inherit (pkgs) lim; }; }
           ../../modules/base.nix
           ../../modules/users.nix
           ../../modules/busybox.nix
@@ -67,6 +66,8 @@ let
           {
             # Inherit from that target system host platform.
             nixpkgs.hostPlatform = stdenv.hostPlatform;
+            # Force our own package set.
+            nixpkgs.pkgs = lib.mkForce pkgs;
           }
           ({ ... } : paramConfig)
           ../../modules/s6