{ pkgs ? import <nixpkgs> {} }: let inherit (pkgs) lib; rt = import ./runtime-generated.nix { inherit (pkgs) fetchurl; }; convRt = x: { path = lib.removePrefix "mirror://steamrt/" x.url; file = x.source; }; files = builtins.map convRt (lib.concatLists (lib.attrValues rt)); in pkgs.stdenv.mkDerivation { name = "steam-runtime-mirror"; buildCommand = '' mkdir $out '' + lib.concatMapStringsSep "\n" (x: '' mkdir -p $(dirname $out/${x.path}) ln -sf ${x.file} $out/${x.path} '') files; }