anchor.diff:      nativeBuildInputs = [ cmake extra-cmake-modules pkgconfig qttools ];
   
       buildInputs = [
  -      libxcb libpthreadstubs libXdmcp libXau qtbase pam systemd
  +      libxcb libpthreadstubs libXdmcp libXau pam systemd
       ];
   
  -    propagatedBuildInputs = [ qtdeclarative ];
  +    propagatedBuildInputs = [
  +      qtbase qtdeclarative
  +    ];
   
       cmakeFlags = [
         "-DCONFIG_FILE=/etc/sddm.conf"
  
positive.code:   installPhase = ''
      runHook preInstall
  
      makeQtWrapper "$unwrapped/bin/sddm" "$out/bin/sddm"
  
      mkdir -p "$out/share/sddm"
  
negative.code: { stdenv, lib, makeQtWrapper, fetchFromGitHub, fetchpatch
  , cmake, extra-cmake-modules, pkgconfig, libxcb, libpthreadstubs, lndir
  , libXdmcp, libXau, qtbase, qtdeclarative, qttools, pam, systemd
  , themes
  