tests/sitecustomize.py

wix: restore COPYING.rtf

This got truncated to 0 bytes in 0ab651b5f77c when the Phabricator extension
crashed because it's a binary file.  That caused the license page in the WIX
installer to be empty.  I don't remember if I needed to resubmit after the bug
was fixed, so let's try this again with the current stable.  If this fails, I'll
retry with 5.1 to see if this is a regression in the API changeover last cycle.

Differential Revision: https://phab.mercurial-scm.org/D8052

from __future__ import absolute_import
import os

if os.environ.get('COVERAGE_PROCESS_START'):
    try:
        import coverage
        import uuid

        covpath = os.path.join(
            os.environ['COVERAGE_DIR'], 'cov.%s' % uuid.uuid1()
        )
        cov = coverage.coverage(data_file=covpath, auto_data=True)
        cov._warn_no_data = False
        cov._warn_unimported_source = False
        cov.start()
    except ImportError:
        pass