MIT License with PyStan (GPLv3 license) dependency?

[benjaminsirb]

Hello,

I'm wondering on how this code can be provided with the MIT license when a dependency is PyStan, which is licensed under GPLv3. I'm fairly new to software licensing concepts so forgive me if this has an obvious answer; it's not immediately clear to me how that can work as I was under the impression that any software that depends on GPLv3 code must also then be provided with a GPLv3 license. Any help or guidance is appreciated!

[lukewarm]

There was some discussions on the Pystan forum regarding it’s GPLv3 license at some point. But the current pystan is licensed under a permissive one.

[benjaminsirb]

Thanks for the info, that's interesting context. Nonetheless, it appears that pystan>=3.0 is currently not supported by Prophet, i.e. while current pystan license is permissive, it is not supported in this package (Prophet) and so I would imagine that as the code currently stands, Prophet must be licensed as GPLv3?

[jhult]

FYI pystan appears to be disappearing in lieu of cmdstanpy (which is BSD-3 licensed). See #2041.

[WardBrian]

Closing due to PyStan no longer being a dependency of prophet