Hi all,
We now have support for spin in our main branch after the merge of gh-21674, thanks to a lot of effort by Gagandeep Singh and with significant help from Lucas, Stefan, and others with review, testing, and upstream improvements in spin itself. This brings things full circle - spin was initially started as a way to make our polished dev.py developer experience reusable for other projects. SciPy now migrating to spin will reduce our maintenance effort on developer tooling, help with muscle memory when contributing on multiple projects (e.g., NumPy, scikit-image), and it also has fewer dev dependencies which is helpful.
Please start using spin instead of python dev.py for your regular development tasks, and if something is not working please report it on DEV: follow-up tasks after merge of `spin` support · Issue #22887 · scipy/scipy · GitHub.