GraalPy wheel build fails when using uv in build frontend on Windows

[joerick]

When building GraalPy wheels with uv in the build frontend (build[uv] or uv), the build fails with a file-not-found error during get_requires_for_build_wheel. This was observed on Windows with both GraalPy 3.11 and 3.12.

Error message:

Building wheel...
× Failed to build
│ C:\Users\runneradmin\AppData\Local\Temp\pytest-of-runneradmin\pytest-1\popen-gw3\test_uv_0\project
├─▶ The build backend returned an error
╰─▶ Call to setuptools.build_meta:legacy.get_requires_for_build_wheel failed:
failed to open file D:_temp\setup-uv-cache\builds-v0.tmpt0SnPs\get_requires_for_build_wheel.txt:
The system cannot find the file specified. (os error 2) (exit code: 0)

cibuildwheel: C:\hostedtoolcache\windows\uv\0.10.7\x86_64\uv.EXE build --python=python C:\Users\runneradmin\AppData\Local\Temp\pytest-of-runneradmin\pytest-1\popen-gw3\test_uv_0\project --wheel --out-dir=C:\Users\runneradmin\AppData\Local\Temp\cibw-run-jhxnk6y1\gp312_250-win_amd64\built_wheel failed with code 2.


In #2741 I've skipped those tests and documented the known issue. But it would be nice to get to the bottom of this.

cc @timfel