calendarserver_upgrade failure

[Joe Malcolm]

I am attempting to install calendarserver-9.0 as an upgrade to 5.x using the port. I was running 10.x and I’m now running 11.0-RELEASE-p5. 

First, i had to remove the insistence on twisted 14.4, which isn’t available in the ports tree. Then starting caldavd gets me a string of output that includes:

2016-12-23T22:03:34+0000 [twext.enterprise.adbapi2#debug] ConnectionPool: txn free 'UpgradeAcquireLockStep.stepWithResult': free=1, busy=0, waiting=0
2016-12-23T22:03:34+0000 [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Beginning database schema check.
2016-12-23T22:03:34+0000 [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Required database key VERSION: 63.
2016-12-23T22:03:34+0000 [twext.enterprise.adbapi2#debug] ConnectionPool: txn busy 'UpgradeDatabaseCoreStep.getVersions': free=0, busy=1, waiting=0
2016-12-23T22:03:34+0000 [twext.enterprise.adbapi2#debug] ConnectionPool: txn free 'UpgradeDatabaseCoreStep.getVersions': free=1, busy=0, waiting=0
2016-12-23T22:03:34+0000 [txdav.common.datastore.upgrade.sql.upgrade.UpgradeDatabaseSchemaStep#warn] Actual database key VERSION: 24.
2016-12-23T22:03:34+0000 [calendarserver.tap.caldav#error] Data store not available; shutting down

So, fair enough. But running calendarserver_upgrade gets me a traceback as follows:

root at cal:/usr/local/etc/caldavd # calendarserver_upgrade -f /usr/local/etc/caldavd/caldavd.plist
Traceback (most recent call last):
 File "/usr/local/bin/calendarserver_upgrade", line 11, in <module>
   load_entry_point('CalendarServer==9.0', 'console_scripts', 'calendarserver_upgrade')()
 File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 565, in load_entry_point
   return get_distribution(dist).load_entry_point(group, name)
 File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2631, in load_entry_point
   return ep.load()
 File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2291, in load
   return self.resolve()
 File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2297, in resolve
   module = __import__(self.module_name, fromlist=['__name__'], level=0)
 File "/usr/local/lib/python2.7/site-packages/calendarserver/tools/upgrade.py", line 27, in <module>
   from txdav.common.datastore.sql import CommonDataStore
 File "/usr/local/lib/python2.7/site-packages/txdav/common/datastore/sql.py", line 85, in <module>
   from calendarserver.tools.util import displayNameForCollection, getEventDetails, agoString
 File "/usr/local/lib/python2.7/site-packages/calendarserver/tools/util.py", line 38, in <module>
   from twistedcaldav.stdconfig import DEFAULT_CONFIG_FILE
 File "/usr/local/lib/python2.7/site-packages/twistedcaldav/stdconfig.py", line 1854, in <module>
   config.update()
 File "/usr/local/lib/python2.7/site-packages/twistedcaldav/config.py", line 262, in update
   hook(self._data, reloading=reloading)
 File "/usr/local/lib/python2.7/site-packages/twistedcaldav/stdconfig.py", line 1478, in _postUpdateResourceService
   from twistedcaldav.upgrade import upgradeResourcesXML
 File "/usr/local/lib/python2.7/site-packages/twistedcaldav/upgrade.py", line 67, in <module>
   from calendarserver.tap.util import getRootResource, FakeRequest
 File "/usr/local/lib/python2.7/site-packages/calendarserver/tap/util.py", line 38, in <module>
   from calendarserver.tools.util import checkDirectory
ImportError: cannot import name checkDirectory

So, pardon my Python ineptitude, but as the file /usr/local/lib/python2.7/site-packages/calendarserver/tools/util.py is present and is identical to the distribution, this error is pretty confusing to me. Can anyone toss me a clue?

Thanks,
Joe