Build of ml-dtypes 0.4.0 is failing on Power

[sandeepgupta12]

We are encountering a build failure with ml-dtypes version 0.4.0 on Power architecture because it requires numpy 2.0.0rc1 for a successful build. Below is the error log we are seeing during the installation via pip:
----------------------------------------------Error Logs-----------------------------------------------------------
pip install ml_dtypes

Collecting ml_dtypes
Using cached ml_dtypes-0.4.0.tar.gz (692 kB)
Installing build dependencies ... error
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> [3 lines of output]
ERROR: Ignored the following versions that require a different python version: 1.21.2 Requires-Python >=3.7,<3.11; 1.21.3 Requires-Python >=3.7,<3.11; 1.21.4 Requires-Python >=3.7,<3.11; 1.21.5 Requires-Python >=3.7,<3.11; 1.21.6 Requires-Python >=3.7,<3.11
ERROR: Could not find a version that satisfies the requirement numpy==2.0.0rc1 (from versions: 1.3.0, 1.4.1, 1.5.0, 1.5.1, 1.6.0, 1.6.1, 1.6.2, 1.7.0, 1.7.1, 1.7.2, 1.8.0, 1.8.1, 1.8.2, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.10.0.post2, 1.10.1, 1.10.2, 1.10.4, 1.11.0, 1.11.1, 1.11.2, 1.11.3, 1.12.0, 1.12.1, 1.13.0, 1.13.1, 1.13.3, 1.14.0, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.14.5, 1.14.6, 1.15.0, 1.15.1, 1.15.2, 1.15.3, 1.15.4, 1.16.0, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.16.6, 1.17.0, 1.17.1, 1.17.2, 1.17.3, 1.17.4, 1.17.5, 1.18.0, 1.18.1, 1.18.2, 1.18.3, 1.18.4, 1.18.5, 1.19.0, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.19.5, 1.20.0, 1.20.1, 1.20.2, 1.20.3, 1.21.0, 1.21.1, 1.22.0, 1.22.1, 1.22.2, 1.22.3, 1.22.4, 1.23.0, 1.23.1, 1.23.2, 1.23.3, 1.23.4, 1.23.5, 1.24.0, 1.24.1, 1.24.2, 1.24.3, 1.24.4, 1.25.0, 1.25.1, 1.25.2, 1.26.0, 1.26.1, 1.26.2, 1.26.3, 1.26.4, 2.0.0, 2.0.1, 2.0.2, 2.1.0rc1, 2.1.0, 2.1.1)
ERROR: No matching distribution found for numpy==2.0.0rc1
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

We are aware that this issue has already been fixed in the main branch. Is it possible to either:
1. Retag/build version 0.4.0 with the required fix?
2. Release a new version that includes this fix?

Additionally, we noticed that there is no wheel file for ml-dtypes available on PyPI for the Power architecture. Could the build process be enabled for Power? If this is feasible, we are happy to contribute a PR to assist with the effort.

[npanpaliya]

@jakevdp - Could you please let us know if we can add Power support to ml-dtypes? I see you've commented in another issue that you're going to tag a new release soon, it would be great if we could get Power wheel file as well on PyPi in that release. We are happy to contribute the changes needed.

[hawkinsp]

We're about to make a new release that pins NumPy 2.0 (not the -rc1) release as a build dependency. I think that will resolve this problem.

I don't think we'd have an objection to shipping Power wheels, if that's helpful, and you can contribute a PR to do such a build in a github action. In general, we're trying to be very compatible with everything for this package, since it's small and useful for many people.

[npanpaliya]

Thank you @hawkinsp . We will raise a PR to add Power wheel.

[sandeepgupta12]

Hi @hawkinsp, we've opened PR #230 to add support for the Power wheel. Could you please review it and proceed?