[SciPy-Dev] pyproject.toml for scipy dependent project

[Roman Yurchak]

Hello,

a quick question: for a project that requires scipy at build time (e.g. 
because it using its the Cython BLAS API), how should the associated 
pyproject.toml look like? i.e.
  a) is specifying scipy>=min_version enough
  b) or does one need to pin minimal supported scipy for each python 
version as it's currently done e.g. for numpy 
https://github.com/scipy/scipy/blob/7ac26a178f385e4fa88d5c22951797a32ec8f38f/pyproject.toml#L6 
?

I think I have seen suggestions on conda-forge in the past that b) makes 
sense, in a similar situation. Can someone confirm that this is also 
something that should be done in `pyproject.toml`? Or would any 
supported version work?

Thanks,
-- 
Roman