anchor.diff:    inherit version;
     src = srcs.${stdenv.hostPlatform.system};
   
  +  dontUnpack = true;
  +
     nativeBuildInputs = [
  -    dpkg
       makeWrapper
     ];
  -
  -  unpackCmd = ''
  -    mkdir out
  -    dpkg -x $curSrc out
  -  '';
   
     installPhase = ''
       runHook preInstall
       mkdir $out
  -    mv usr/* $out/
  -    mv opt $out/
  +    tar -C $out -xf ${src}
  +    mv $out/usr/* $out/
       runHook postInstall
     '';
   
  
positive.code:   version = "5.6.16775.0418";
    srcs = {
      x86_64-linux = fetchurl {
        url = "https://zoom.us/client/${version}/zoom_amd64.deb";
        sha256 = "1fmzwxq8jv5k1b2kvg1ij9g6cdp1hladd8vm3cxzd8fywdjcndim";
      };
    };
  
  
negative.code: , atk
  , cairo
  , dbus
  , libGL
  , fontconfig
  , freetype
  