Pin PySDK's gflags dependency to <3.0.

We've built and tested with 3.0 successfully, but its ChangeLog says:

  * A lot of potentially backwards incompatible changes since 2.0.
  * This version is NOT recommended to use in production. Some of the files and
    documentation has been lost during export; this will be fixed in next
    versions.

We found out about this after 3.0.2 broke our tests.
Take their advice for now.  No issue #.

diff --git a/sdk/python/setup.py b/sdk/python/setup.py
index 98b7361e92e94a5da39fdfe446f92546020e0ab1..b6518f95a17495851c72985af0e8b16a97e3f1b6 100644 (file)
--- a/sdk/python/setup.py
+++ b/sdk/python/setup.py
@@ -43,7 +43,7 @@ setup(name='arvados-python-client',
           'google-api-python-client',
           'httplib2',
           'pycurl >=7.19.5.1, <7.21.5',
-          'python-gflags',
+          'python-gflags<3.0',
           'ws4py'
       ],
       test_suite='tests',