anchor.diff:      "--with-lib=${skalibs}/lib"
       "--with-dynlib=${skalibs}/lib"
     ]
  -  ++ (stdenv.lib.optional stdenv.isDarwin "--target=${stdenv.system}");
  +  ++ (optional stdenv.isDarwin "--target=${stdenv.system}")
  +  ++ (optional stdenv.isDarwin "--with-gcc=${gcc}/bin");
   
  -  meta = with stdenv.lib; {
  +  meta = {
       homepage = http://www.skarnet.org/software/s6-portable-utils/;
       description = "A set of tiny general Unix utilities optimized for simplicity and small size";
       platforms = platforms.all;
  
positive.code: { stdenv, fetchFromGitHub, skalibs, gcc }:
  
  stdenv.mkDerivation rec {
    name = "s6-portable-utils-${version}";
  
negative.code: 
    dontDisableStatic = true;
    
    nativeBuildInputs = []
      ++ optional stdenv.isDarwin gcc;
      
    configureFlags = [
      "--with-sysdeps=${skalibs}/lib/skalibs/sysdeps"
  