{ perSystem = { pkgs, ... }: { packages.teh-website = pkgs.callPackage ( { stdenv, ... }: stdenv.mkDerivation { pname = "TehWebsite"; version = "0.0.1"; src = ./src; installPhase = '' mkdir -p $out/srv/www cp -r ./* $out/srv/www ''; } ) { }; }; }