Fix requirements/compile.py when PIP_REQUIRE_VIRTUALENV isn't set (#288)
Fix requirements/compile.py when PIP_REQUIRE_VIRTUALENV isn't set (#288)

Co-Authored-By: Chris Tapper <711c73f64afdce07b7e38039a96d2224209e9a6c@cjtapper.com>

Co-authored-by: Chris Tapper <711c73f64afdce07b7e38039a96d2224209e9a6c@cjtapper.com>
adamchainz/pytest-restrict