Kei Kebreau <kei@openmailbox.org> writes:

> * gnu/packages/game-development.scm (nml): New variable.

[...]

> +    (build-system python-build-system)
> +    (inputs
> +     `(("python-pillow" ,python-pillow)
> +       ("python-ply" ,python-ply)))

Should these not be propagated?

> +    (home-page "http://dev.openttdcoop.org/projects/nml")
> +    (synopsis "NML compiler")
> +    (description
> +     "NML is a a python-based compiler, capable of compiling NML files (along
> +with their associated language, sound and graphic files) into grf and/or nfo
> +files.")

Could you mention what NML is here with a @dfn{}? Maybe also add
@file{.grf} and @file{.nfo} if they are file extensions. LGTM otherwise!