[tahoe-lafs-trac-stream] [tahoe-lafs] #1346: desert-island test can pass incorrectly because packages are installed

[tahoe-lafs]

#1346: desert-island test can pass incorrectly because packages are installed
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     Reporter:  davidsarah       |      Owner:  somebody
         Type:  defect           |     Status:  new
     Priority:  critical         |  Milestone:  soon (release n/a)
    Component:  dev-             |    Version:  1.8.1
  infrastructure                 |   Keywords:  buildbot desert-island sumo
   Resolution:                   |
Launchpad Bug:                   |
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Comment (by zooko):

 It would be really great to have a layer of isolation between the code-
 under-test, which in this case is the source tree and its build system,
 from the test-code which in this case is the buildbot itself and the other
 code on the host's system. The Python "virtualenv" tool might be pretty
 well-suited for this. I think that's what its raison d'etre is.

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Ticket URL: <http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1346#comment:2>
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