GPL License

[calebh]

I include pynauty as a dependency of my dihash library, which is available on PyPI. Today I realized that the pynauty library is licensed under GPLv3, which is incompatible with my preferred license (MIT) for dihash. Would you consider moving pynauty to Apache v2 (which is what nauty is now licensed under), MIT or some other non-viral license?

It is my understanding that nauty used to be under a custom license and was subsequently moved to Apache v2. Is this the reason for GPLv3? I think it would make sense to use the same license as nauty, seeing as this is a wrapper library.