lint fails on main

[jku]

make lint fails with current main branch (both in CI and locally):

2025-04-28T11:24:58.2900106Z ./env/bin/pip-compile --generate-hashes --output-file=requirements.txt requirements.in
2025-04-28T11:25:01.9671607Z Traceback (most recent call last):
2025-04-28T11:25:01.9681770Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/./env/bin/pip-compile", line 8, in <module>
2025-04-28T11:25:01.9682748Z     sys.exit(cli())
2025-04-28T11:25:01.9683109Z              ^^^^^
2025-04-28T11:25:01.9684248Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/click/core.py", line 1161, in __call__
2025-04-28T11:25:01.9685390Z     return self.main(*args, **kwargs)
2025-04-28T11:25:01.9685903Z            ^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-04-28T11:25:01.9687018Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/click/core.py", line 1082, in main
2025-04-28T11:25:01.9687831Z     rv = self.invoke(ctx)
2025-04-28T11:25:01.9688046Z          ^^^^^^^^^^^^^^^^
2025-04-28T11:25:01.9688899Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/click/core.py", line 1443, in invoke
2025-04-28T11:25:01.9689556Z     return ctx.invoke(self.callback, **ctx.params)
2025-04-28T11:25:01.9689844Z            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-04-28T11:25:01.9690479Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/click/core.py", line 788, in invoke
2025-04-28T11:25:01.9691058Z     return __callback(*args, **kwargs)
2025-04-28T11:25:01.9691304Z            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-04-28T11:25:01.9692189Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/click/decorators.py", line 33, in new_func
2025-04-28T11:25:01.9692990Z     return f(get_current_context(), *args, **kwargs)
2025-04-28T11:25:01.9693266Z            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-04-28T11:25:01.9693915Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/piptools/scripts/compile.py", line 471, in cli
2025-04-28T11:25:01.9694631Z     hashes = resolver.resolve_hashes(results) if generate_hashes else None
2025-04-28T11:25:01.9694975Z              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-04-28T11:25:01.9695620Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/piptools/resolver.py", line 167, in resolve_hashes
2025-04-28T11:25:01.9696310Z     with self.repository.allow_all_wheels(), log.indentation():
2025-04-28T11:25:01.9696853Z   File "/opt/hostedtoolcache/Python/3.11.12/x64/lib/python3.11/contextlib.py", line 137, in __enter__
2025-04-28T11:25:01.9862576Z     return next(self.gen)
2025-04-28T11:25:01.9863058Z            ^^^^^^^^^^^^^^
2025-04-28T11:25:01.9864631Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/piptools/repositories/local.py", line 104, in allow_all_wheels
2025-04-28T11:25:01.9866185Z     with self.repository.allow_all_wheels():
2025-04-28T11:25:01.9867220Z   File "/opt/hostedtoolcache/Python/3.11.12/x64/lib/python3.11/contextlib.py", line 137, in __enter__
2025-04-28T11:25:01.9868174Z     return next(self.gen)
2025-04-28T11:25:01.9868809Z            ^^^^^^^^^^^^^^
2025-04-28T11:25:01.9870239Z   File "/home/runner/work/sigstore-conformance/sigstore-conformance/env/lib/python3.11/site-packages/piptools/repositories/pypi.py", line 452, in allow_all_wheels
2025-04-28T11:25:01.9871284Z     self.finder.find_all_candidates.cache_clear()
2025-04-28T11:25:01.9871641Z     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2025-04-28T11:25:01.9872060Z AttributeError: 'function' object has no attribute 'cache_clear'

[jku]

this is a pip / pip-tools incompatibility issue that can be worked around by not using pip 25.1

[di]

This is jazzband/pip-tools#2176.