anchor.diff: -{ stdenv, buildPackages, hostPlatform, fetchurl, fetchpatch, flex, cracklib }:
  +{ stdenv, buildPackages, hostPlatform, fetchurl, fetchpatch, flex, cracklib, db4 }:
   
   stdenv.mkDerivation rec {
     name = "linux-pam-${version}";
  
positive.code:   depsBuildBuild = [ buildPackages.stdenv.cc ];
    nativeBuildInputs = [ flex ];
  
    buildInputs = [ cracklib ];
  
    enableParallelBuilding = true;
  
  
negative.code: 
    doCheck = false; # fails
  
    meta = with stdenv.lib; {
      homepage = http://www.linux-pam.org/;
      description = "Pluggable Authentication Modules, a flexible mechanism for authenticating user";
      platforms = platforms.linux;
      license = licenses.bsd3;
    };
  }
  