diff --git a/default.nix b/default.nix
--- a/default.nix
+++ b/default.nix
@@ -24,12 +24,19 @@ args@
 , doCheck ? false
 , ...
 }:
+let pkgs_ = (import <nixpkgs> {}); in
 
 let
   # Use nixpkgs from args or import them. We use this indirect approach
   # through args to be able to use the name `pkgs` for our customized packages.
   # Otherwise we will end up with an infinite recursion.
-  pkgs = args.pkgs or (import <nixpkgs> { });
+  pkgs = args.pkgs or (import <nixpkgs> {
+    overlays = [
+      (import ./pkgs/overlays.nix)
+    ];
+    inherit (pkgs_)
+      system;
+  });
 
   # Works with the new python-packages, still can fallback to the old
   # variant.
diff --git a/pkgs/overlays.nix b/pkgs/overlays.nix
new file mode 100755
--- /dev/null
+++ b/pkgs/overlays.nix
@@ -0,0 +1,3 @@
+self: super: {
+
+}
diff --git a/shell.nix b/shell.nix
--- a/shell.nix
+++ b/shell.nix
@@ -14,7 +14,6 @@ let
 
   enterprise-ce = import ./default.nix {
     inherit
-      pkgs
       pythonPackages
       doCheck;
   };