`remove_avoided_requirements()` should check for the full package name instead of a substring

[tttapa]

In the current implementation, the remove_avoided_requirements function removes any packages that contain the substring cmake or patchelf in their name.
As a result, building packages using the py-build-cmake backend is impossible, since pyodide-build refuses to install it (because of the cmake in the package name).

pyodide-build/pyodide_build/pypabuild.py

Lines 115 to 123 in b8bd8d8

	def remove_avoided_requirements(
	requires: set[str], avoided_requirements: set[str] | list[str]
	) -> set[str]:
	for reqstr in list(requires):
	req = Requirement(reqstr)
	for avoid_name in set(avoided_requirements):
	if avoid_name in req.name.lower():
	requires.remove(reqstr)
	return requires

I suggest using avoid_name == req.name.lower() instead of avoid_name in req.name.lower().

[hoodmane]

We tried to fix this before:
#60

Turns out it breaks. It requires some further investigation but probably the correct code here wouldn't be that much more complicated.

[tttapa]

My bad, I only searched the issues, not the PRs.

The CI failure you mentioned seems unrelated to this specific change, though.
The circleci workflow fails because of ValidationError: 1 validation error for MetaConfig: requirements.constraint. Extra inputs are not permitted, which appears to be caused by the fact that your pyodide-build fork does not yet include this commit: b8bd8d8

Could you rebase your PR and try again?
Thanks!

[hoodmane]

Well it's good to have an issue for this too. Thanks for the report!