anchor.diff:    };
   
     preConfigure = ''
  -      substituteInPlace ./make-linux.mk \
  -        --replace 'CC=$(shell which clang gcc cc 2>/dev/null | head -n 1)' "CC=${gcc}/bin/gcc";
  -      substituteInPlace ./make-linux.mk \
  -        --replace 'CXX=$(shell which clang++ g++ c++ 2>/dev/null | head -n 1)' "CC=${gcc}/bin/g++";
         substituteInPlace ./osdep/LinuxEthernetTap.cpp \
           --replace 'execlp("ip",' 'execlp("${iproute}/bin/ip",'
   
  
positive.code:         --replace 'ronn -r' '${ronn}/bin/ronn -r'
    '';
  
    buildInputs = [ openssl lzo zlib gcc iproute ronn ];
  
    installPhase = ''
      install -Dt "$out/bin/" zerotier-one
  
negative.code: { stdenv, fetchurl, openssl, lzo, zlib, iproute, which, ronn }:
  
  stdenv.mkDerivation rec {
    version = "1.1.6";
  