New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/38172#discussion_r926488721

Comment:
But I am not sure if it's worth the setup. Is this common in pep517 packages? If yes, could we add something like this to the build style?
```suggestion

do_check() {
	rm -rf *.dist-info tmp # remove artifacts from previous unsuccessful check run
	pip install --no-deps --target tmp ./jsonschema-$version-py3-none-any.whl
	mv tmp/*.dist-info .
	PYTHONPATH=. pytest
	rm -rf *.dist-info tmp
}
```