anchor.diff:  { stdenv, fetchurl, pkgconfig
  -, bzip2, curl, expat, libarchive, xz, zlib, libuv
  +, bzip2, curl, expat, libarchive, xz, zlib, libuv, rhash
   # darwin attributes
   , ps
   , isBootstrap ? false
  
positive.code: 
    buildInputs =
      [ setupHook pkgconfig ]
      ++ optionals useSharedLibraries [ bzip2 curl expat libarchive xz zlib libuv ]
      ++ optional useNcurses ncurses
      ++ optional useQt4 qt4;
  
  
negative.code: 
  let
    os = stdenv.lib.optionalString;
    majorVersion = "3.8";
    minorVersion = "2";
    version = "${majorVersion}.${minorVersion}";
  in
  