Windows 32-bit builds are broken due to rust-numpy 0.22

[jakelishman]

Environment

• Qiskit version: main
• Python version: any
• Operating system: Windows 32-bit

What is happening?

It's currently not possible to build Qiskit from source on Windows 32-bit, because rust-numpy 0.22 doesn't support the platform due to problems (see PyO3/rust-numpy#448). This will prevent us from deploying Qiskit 1.3, if we don't provide a workaround for the platform.

How can we reproduce the issue?

For example, see https://github.com/Qiskit/qiskit/actions/runs/11351263774/job/31571457159.

What should happen?

Windows 32-bit is a tier-3 platform for the 1.x series, which means we're still committing to provide pre-built binaries for it. We ought to have this working.

Any suggestions?

No response

[jakelishman]

I spent a bit of time trying to help out on rust-numpy to see if we could get a fix, and PyO3/rust-numpy#463 will hopefully do the job.