[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-infrastructure           |         Version:  1.8.1             
 Keywords:  buildbot desert-island sumo  |   Launchpad Bug:                    
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 The desert-island test should be testing that the contents of the deps
 tarball are sufficient to build without downloading. It's actually testing
 that those contents plus any locally installed packages, are sufficient to
 build without downloading.

 For example, a SUMO build of 1.8.2b1, with no dependencies installed, will
 download setuptools_trial from PyPI in order to build zfec. That [http
 ://tahoe-lafs.org/buildbot/builders/clean/builds/2707/steps/test-desert-
 island/logs/stdio isn't caught by the desert-island builder] because it
 has zfec locally installed.

 In fact that builder has pycryptopp, mock, pyasn1, pycrypto, Nevow,
 foolscap, Twisted, zope.interface, simplejson, zfec, pyOpenSSL, pyutil,
 argparse, and zbase32 installed, so it is not using any of those from the
 tarball.

 I believe the test should warn if it has any lines that start with "Using
 ".

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