ModuleNotFoundError: No module named 'scipy.fft._pocketfft'

[seanlaw]

According to these recently failing tests:

https://github.com/stumpy-dev/automate/actions/runs/27837317419/job/82405841925
https://github.com/stumpy-dev/automate/actions/runs/27837448667/job/82388725360
https://github.com/stumpy-dev/automate/actions/runs/27837448733/job/82406007263

which are erroring out with:

ModuleNotFoundError: No module named 'scipy.fft._pocketfft'

It appears that _pocketfft cannot be found in https://github.com/scipy/scipy/tree/main/scipy/fft

because pocketfft has been succeeded by ducc0.fft (both of which are maintained by the same creator - mreineck):

scipy/scipy#23436

They mention:

The most significant of those from SciPy's perspective is probably that storage requirements for internally cached plans have been significantly reduced for most long 1D transforms. Plans that require more storage than 1MB will no longer be cached; this mainly affects huge 1D transforms of prime and near-prime sizes.

[seanlaw]

@NimaSarajpoor I believe that this directly affects #1132

Would you mind taking a look?

[seanlaw]

Also, in a "patting ourselves on the back" kind of way (or, maybe, "future us thanks past us"), our automated tests are doing its job in ensuring that we find bugs in a timely fashion! ❤️