anchor.diff:    makeFlags = [
       "CC=${stdenv.cc.targetPrefix}cc"
     ];
  +
  +  NIX_LDFLAGS = "-lcrypt";
   
     installPhase = ''
       runHook preInstall
  
positive.code: 
    buildInputs = [
      libpcap
      openssl
      bash
    ];
  
negative.code: , fetchFromGitHub
  , substituteAll
  , libpcap
  , libxcrypt
  , openssl
  , bash
  }:
  