anchor.diff:    buildInputs = [ pam ];
   
     buildPhase = ''
  +    runHook preBuild
       make
  +    runHook postBuild
     '';
   
     installPhase = ''
  +    runHook preInstall
       make install
  +    runHook postInstall
     '';
   
     meta = with lib; {
  
positive.code: 
  buildGoModule rec {
    pname = "fscrypt";
    version = "0.3.1";
  
    src = fetchFromGitHub {
      owner = "google";
      repo = "fscrypt";
      rev = "v${version}";
      sha256 = "0gi91vm0ai4vjzj6cfnjsfy8kbfxjiq2n7jnbhf5470qbx49qixr";
    };
  
    postPatch = ''
  
negative.code:       --replace "/usr/local" "$out"
    '';
  
    vendorSha256 = "sha256-6zcHz7ePJFSxxfIlhVK2VEf6+soBoUInT9ZsZK/Ag78=";
  
    doCheck = false;
  
  