This is required so py-pytest-cov is functional with newer versions of
py-pytest-xdist [1].
While here, appease portlint by shifting where variables (`CONFLICTS`,
etc) are defined.
1. https://github.com/pytest-dev/pytest-cov/issues/422
PR: 269360
Co-Authored-With: Yuri Victorovich <yuri@freebsd.org>