anchor.diff:      cp -v ./data/colormgr $out/etc/bash_completion.d
     '';
   
  +  passthru = {
  +    srcVerification = fetchurl rec {
  +      inherit (src)
  +        outputHash
  +        outputHashAlgo
  +        urls;
  +      sha1Urls =  map (n: "${n}.sha1") urls;
  +      pgpsigUrls = map (n: "${n}.asc") urls;
  +      pgpKeyFingerprint = "163EB 50119 225DB 3DF8F  49EA1 7ACBA 8DFA9 70E17";
  +      failEarly = true;
  +    };
  +  };
  +
     meta = with stdenv.lib; {
       description = "Accurately color manage input and output devices";
       homepage = http://www.freedesktop.org/software/colord/intro.html;
  
positive.code: 
  let
    inherit (stdenv.lib)
      enFlag;
  in
  
  stdenv.mkDerivation rec {
    name = "colord-1.3.2";
  
    src = fetchurl rec {
      url = "https://www.freedesktop.org/software/colord/releases/${name}.tar.xz";
      sha1Url = "${url}.sha1";
      sha256 = "d4ab3f11ec5e98d1079242fda7ad0a84a51da93572405561362a6ce2c274b8f5";
    };
  
    nativeBuildInputs = [
  
negative.code:     "--enable-nls"
      "--disable-strict"
      "--enable-rpath"
      "--${boolEn (libgusb != null)}-libgusb"
      "--${boolEn (systemd_lib != null)}-udev"
      "--disable-bash-completion"
      "--${boolEn (polkit != null)}-polkit"
      "--enable-libcolordcompat"
      "--${boolEn (systemd_lib != null)}-systemd-login"
      "--disable-examples"
      "--${boolEn (argyllcms != null)}-argyllcms-sensor"
      "--disable-reverse"
      "--disable-sane"
      "--${boolEn (vala != null)}-vala"
      "--disable-session-example"
      "--enable-print-profiles"
      "--disable-installed-tests"
  