anchor.diff:        --prefix VIS_PATH : "$out/share/vis"
     '';
   
  -  meta = {
  +  meta = with stdenv.lib; {
       description = "A vim like editor";
       homepage = http://github.com/martanne/vis;
  -    license = stdenv.lib.licenses.isc;
  -    maintainers = [ stdenv.lib.maintainers.vrthra ];
  +    license = licenses.isc;
  +    maintainers = [ maintainers.vrthra ];
     };
   }
  -
  
positive.code: { stdenv, fetchFromGitHub, unzip, pkgconfig, makeWrapper, ncurses, libtermkey, lpeg, lua }:
  
  stdenv.mkDerivation rec {
    name = "vis-nightly-${version}";
    version = "2016-04-15";
  
    src = fetchFromGitHub {
      sha256 = "0a4gpwniy5r9dpfq51fxjxxnxavdjv8x76w9bbjnbnh8n63p3sj7";
      rev = "472c559a273d3c7b0f5ee92260c5544bc3d74576";
      repo = "vis";
      owner = "martanne";
    };
  
negative.code:   nativeBuildInputs = [ makeWrapper ];
  
    buildInputs = [
      unzip pkgconfig
      ncurses
      libtermkey
      lua
      lpeg
    ] ++ stdenv.lib.optional stdenv.isLinux [
      acl
      libselinux
    ];
  
    LUA_CPATH="${lpeg}/lib/lua/${lua.luaversion}/?.so;";
  