octavePackages.gsl: mark as broken

{

  buildOctavePackage,

  stdenv,

  lib,

  fetchurl,

  gsl,

    license = lib.licenses.gpl2Plus;

    maintainers = with lib.maintainers; [ KarlJoad ];

    description = "Octave bindings to the GNU Scientific Library";

    # error: use of undeclared identifier 'feval'; did you mean 'octave::feval'?

    # error: no member named 'is_real_type' in 'octave_value'

    broken = stdenv.hostPlatform.isDarwin;

    # When used in an `octave.withPackages` environment, octave fails to find

    # libgsl.so from some reason.

    broken = true;

  };

}