anchor.diff:      homepage = http://www.gnu.org/software/gtypist;
       description = "Universal typing tutor";
       license = licenses.gpl3Plus;
  -    platforms = platforms.linux;
  +    platforms = platforms.linux ++ platforms.darwin;
       maintainers = with maintainers; [ pSub ];
     };
   }
  
positive.code:     sha256 = "0xzrkkmj0b1dw3yr0m9hml2y634cc4h61im6zwcq57s7285z8fn1";
    };
  
    buildInputs = [ makeWrapper ncurses perl fortune ];
  
    preFixup = ''
       wrapProgram "$out/bin/typefortune" \
  
negative.code: {stdenv, fetchurl, makeWrapper, libiconv, ncurses, perl, fortune}:
  
  stdenv.mkDerivation rec {
    name = "gtypist-${version}";
  