Sharlatan Hellseher <sharlatanus@gmail.com> writes:

> * gnu/packages/engineering.scm (vcglib): New variable.
> ---
>  gnu/packages/engineering.scm | 65 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 65 insertions(+)

...

> +    (license license:gpl3+)))

This might be correct for some files, but I think I spotted a GPLv2
one. Also, some files just seem to state "all rights reserved", so maybe
some parts aren't free software?

Maybe try running licensecheck over the source code.

Thanks,

Chris