[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2249: Installed distribution Twisted 12.2.0 [for example] conflicts with requirement twisted>=13.0 of nevow 0.11.1

[Tahoe-LAFS]

#2249: Installed distribution Twisted 12.2.0 [for example] conflicts with
requirement twisted>=13.0 of nevow 0.11.1
-------------------------+-------------------------------------------------
     Reporter:           |      Owner:  warner
  nihraguk               |     Status:  new
         Type:  defect   |  Milestone:  1.11.0
     Priority:  normal   |    Version:  1.10.0
    Component:           |   Keywords:  mac osx debian windows packaging
  packaging              |  twisted nevow
   Resolution:           |
Launchpad Bug:           |
-------------------------+-------------------------------------------------

Comment (by daira):

 Replying to [comment:24 nejucomo]:
 > On {{{2249-windows-dep-workaround-5}}} at
 {{{dff955a46a28bd6c1da438e0e6d45e3c0e3503aa}}} I see this problem:
 >
 > {{{
 > $ ./venv/bin/python ./setup.py test
 [...]
 >   File "/home/n/sandbox/lafs-tools/tahoe-
 lafs/setuptools-0.6c16dev4.egg/setuptools/command/bdist_egg.py", line 236,
 in run
 >   File "/home/n/sandbox/lafs-tools/tahoe-
 lafs/setuptools-0.6c16dev4.egg/setuptools/command/bdist_egg.py", line 289,
 in gen_header
 > AttributeError: Distribution instance has no attribute 'entry_points'
 > }}}

 This is because `setuptools-0.6c16dev4.egg` got added to `sys.path` rather
 than `setuptools-0.6c16dev5.egg`. (I don't actually know why that should
 produce the quoted error, but it does.) I added another commit that should
 fix this problem even when `setuptools-0.6c16dev4.egg` is not deleted.

--
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2249#comment:27>
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