anchor.diff:      mv fonts.conf.tmp $out/etc/fonts/fonts.conf
     '';
   
  -  doCheck = true;
  +  # Broken with 2.13.0
  +  #doCheck = true;
   
     passthru = {
       inherit configVersion;
  
positive.code: 
  let
    # bump whenever fontconfig breaks compatibility with older configurations
    configVersion = "2.12";
  in
  stdenv.mkDerivation rec {
    name = "fontconfig-2.12.6";
  
    src = fetchurl {
      urls = [
        "https://www.freedesktop.org/software/fontconfig/release/${name}.tar.bz2"
        "http://fontconfig.org/release/${name}.tar.bz2"
      ];
      sha256 = "cf0c30807d08f6a28ab46c61b8dbd55c97d2f292cf88f3a07d3384687f31f017";
    };
  
    nativeBuildInputs = [
  
negative.code: , fetchurl
  , gperf
  , lib
  , libxslt
  , substituteAll
  
  , freetype
  , expat
  , util-linux_lib
  , xorg
  }:
  
  