Just rule out 19.0 for pip
@@ -77,7 +77,7 @@ def _create_or_update_virtualenv(
cmd = "source {}".format(os.path.join(virtualenv_path, "bin/activate"))
with prefix(cmd):
# Make sure we're using latest pip so options work as expected
- run("pip install --upgrade 'pip>=9.0,<19'", pty=False)
+ run("pip install --upgrade 'pip>=9.0,!=19.0'", pty=False)
run(
"pip install -r {} --exists-action w --upgrade "
"--upgrade-strategy only-if-needed".format(temp_req),
