[tahoe-lafs-trac-stream] [tahoe-lafs] #1464: stronger isolation between the Python libraries imported by build steps and those used by buildbot

[tahoe-lafs]

#1464: stronger isolation between the Python libraries imported by build steps and
those used by buildbot
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 Reporter:  davidsarah                |          Owner:  somebody
     Type:  defect                    |         Status:  new
 Priority:  major                     |      Milestone:  undecided
Component:  dev-infrastructure        |        Version:  1.8.2
 Keywords:  buildbot twisted pywin32  |  Launchpad Bug:
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 buildbot uses some of the same Python libraries as Tahoe, for example
 Twisted and pywin32. This creates problems for build steps that want to
 test what happens when those libraries are not installed, or when a
 version that is not compatible with buildbot is installed.

 #1334 is a special case of this problem, as is #1346.

 Possible solutions include using virtualenv, or setting up PYTHONPATH
 differently for buildbot and for the code under test.

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Ticket URL: <http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1464>
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