install-deps: install setuptools before upgrading virtualenv

this should address the failures when running install-deps.sh, like

Downloading/unpacking virtualenv
  Running setup.py egg_info for package virtualenv
    /usr/lib64/python2.7/distutils/dist.py:267: UserWarning: Unknown
distribution option: 'python_requires'
      warnings.warn(msg)
    error in virtualenv setup command: 'extras_require' must be a
dictionary whose values are strings or lists of strings containing valid
project/version requirement specifiers.
    Complete output from command python setup.py egg_info:
    /usr/lib64/python2.7/distutils/dist.py:267: UserWarning: Unknown
distribution option: 'python_requires'

  warnings.warn(msg)

error in virtualenv setup command: 'extras_require' must be a dictionary
whose values are strings or lists of strings containing valid
project/version requirement specifiers.

this only happens on very old virtualenv shipped with RHEL7.4

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 95386752ab2635f56e1d38b50de7144e2135b323)

diff --git a/install-deps.sh b/install-deps.sh
index 1c661d2313e7aed2be9926e88b8f07e01a6a6677..7d9742915aae515425693350076b64827ed9086a 100755 (executable)
--- a/install-deps.sh
+++ b/install-deps.sh
@@ -291,6 +291,9 @@ function activate_virtualenv() {
         # because CentOS 7 has a buggy old version (v1.10.1)
         # https://github.com/pypa/virtualenv/issues/463
         virtualenv ${env_dir}_tmp
+        # install setuptools before upgrading virtualenv, as the latter needs
+        # a recent setuptools for setup commands like `extras_require`.
+        ${env_dir}_tmp/bin/pip install --upgrade setuptools
         ${env_dir}_tmp/bin/pip install --upgrade virtualenv
         ${env_dir}_tmp/bin/virtualenv --python $interpreter $env_dir
         rm -rf ${env_dir}_tmp