anchor.diff:      description =  "A tool for programming graphics intended to replace Metapost";
       license = licenses.gpl3Plus;
       maintainers = [ maintainers.raskin maintainers.peti ];
  +    broken = stdenv.isDarwin;  # https://github.com/vectorgraphics/asymptote/issues/69
       platforms = platforms.linux ++ platforms.darwin;
     };
   }
  
positive.code: 
    preConfigure = ''
      export HOME="$PWD"
      patchShebangs . 
      sed -e 's@epswrite@eps2write@g' -i runlabel.in
      xz -d < ${texinfo.src} | tar --wildcards -x texinfo-'*'/doc/texinfo.tex
      cp texinfo-*/doc/texinfo.tex doc/
  
negative.code: {stdenv, fetchurl
    , freeglut, ghostscriptX, imagemagick, fftw
    , boehmgc, libGLU, libGL, mesa_noglu, ncurses, readline, gsl, libsigsegv
    , python, zlib, perl, texLive, texinfo, xz
  , darwin
  