anchor.diff: -{ mkDerivation, lib, fetchurl, cmake, extra-cmake-modules
  +{ mkDerivation, lib, fetchurl, fetchpatch, cmake, extra-cmake-modules
   , karchive, kconfig, kwidgetsaddons, kcompletion, kcoreaddons
   , kguiaddons, ki18n, kitemmodels, kitemviews, kwindowsystem
   , kio, kcrash
  
positive.code:     qtmultimedia qtx11extras
    ];
  
    NIX_CFLAGS_COMPILE = [ "-I${ilmbase.dev}/include/OpenEXR" ];
  
    meta = with lib; {
  
negative.code: 
  mkDerivation rec {
    name = "krita-${version}";
    version = "3.1.4";
  
    src = fetchurl {
      url = "http://download.kde.org/stable/krita/${version}/${name}.tar.gz";
      sha256 = "1al27v17s70hihk2mcmz3l2g6rl9qzpxaifapdfpkyias6q3f63l";
    };
  
    nativeBuildInputs = [ cmake extra-cmake-modules ];
  