On Fri, Oct 06, 2017 at 06:20:42PM +0200, Thomas Danckaert wrote:
> Hi Guix,
> 
> this patch adds hdf-java.
> 
> It's quite ugly, but it seems the autotools build for this package is barely
> working and really needs a lot of patching...  (Actually, using CMake is
> recommended, but then we would have to build the HDF4 and HDF5 packages with
> CMake as well).
> 
> cheers,
> 
> Thomas

> From 619b38cc889bc41e0128f038aa78e54f71fb7dab Mon Sep 17 00:00:00 2001
> From: Thomas Danckaert <thomas.danckaert@gmail.com>
> Date: Wed, 4 Oct 2017 17:17:03 +0200
> Subject: [PATCH 2/2] gnu: Add hdf-java.
> 
> * gnu/packages/maths.scm (hdf-java): New variable.

Overall, LGTM...

> +        (add-before 'check 'build-examples
> +          (lambda _
> +            (apply system* `("javac"
> +                             ,@(find-files "examples" ".*\\.java")))
> +            #t)))

Do we have to explicity return #t here? Does the javac call not return
a value that we can pass to (zero? ...)?