anchor.diff:  }:
   
   let
  -  version = "4.5";
  +  version = "4.6";
   in
   stdenv.mkDerivation rec {
     name = "shadow-${version}";
  
positive.code:   ];
  
    preBuild = ''
      grep -r '/usr/sbin/nscd' .
      sed -i 's,/usr/sbin/nscd,/run/current-system/sw/bin/nscd,g' lib/nscd.c
    '';
  
    preInstall = ''
  
negative.code:   src = fetchurl {
      url = "https://github.com/shadow-maint/shadow/releases/download/${version}/${name}.tar.xz";
      hashOutput = false;
      sha256 = "0998c8d84242a231ab0acb7f8613927ff5bcff095f8aa6b79478893a03f05583";
    };
  
    buildInputs = [
  