Hello Rutger,

guix-commits@gnu.org writes:

> rhelling pushed a commit to branch staging
> in repository guix.
>
> commit ebfe592fd433ce4850fb62b5390ca5d920d935d5
> Author: Rutger Helling <rhelling@mykolab.com>
> Date:   Thu Mar 21 10:53:24 2019 +0100
>
>     gnu: vulkan-loader: Remove unnecessary inputs.
>     
>     * gnu/packages/vulkan.scm (vulkan-loader)[arguments]: Remove
>     -DBUILD_LAYERS=OFF.
>     [inputs]: Remove all.
>     [native-inputs]: Add libxrandr, vulkan-headers, wayland.

Are these libraries only used for testing?  I would assume they should
be inputs in order to avoid problems when cross-compiling.

If they are only for tests, can you add a comment about it?