pip >= 9.0 for update_virtualenv
@@ -55,7 +55,7 @@ def _create_or_update_virtualenv(virtualenv_root,
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'", pty=False)
+ run("pip install --upgrade 'pip>=9.0'", pty=False)
run("pip install -r {} --exists-action w --upgrade "
"--upgrade-strategy only-if-needed".format(temp_req),
pty=False)
