[tahoe-lafs-trac-stream] [tahoe-lafs] #1714: Tahoe-lafs fails to start with python 2.7 due to missing argparse module

[tahoe-lafs]

#1714: Tahoe-lafs fails to start with python 2.7 due to missing argparse module
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     Reporter:  vrusinov   |      Owner:  somebody
         Type:  defect     |     Status:  new
     Priority:  major      |  Milestone:  undecided
    Component:  packaging  |    Version:  1.9.1
   Resolution:             |   Keywords:
Launchpad Bug:             |
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Comment (by zooko):

 We can also change zfec to declare a dependency on the argparse package
 only if the argparse module can't be imported. This would be analogous to
 the way Tahoe-LAFS
 [source:git/src/allmydata/_auto_deps.py?annotate=blame&rev=cef646c4a70537d618459044ea0a8b590732ca90#L80
 declares a dependency on the pysqlite package] only if the {{{sqlite3}}}
 module can't be imported.

 A simpler solution to this problem is to require Python 2.7! I'm excited
 about Python 2.7 because the Python developers have sworn to stop
 improving the Python 2 line.

 Realistically, though, it will probably be years before we're willing to
 tell people they can't run Tahoe-LAFS with the Python 2.6 that came with
 their operating system. See #1658 (drop support for Python < 2.6) for a
 ticket where we are dithering about when to drop support for Python < 2.6.
 To simplify the subject of *this* ticket we would *also* have to drop
 support for Python < 2.7.

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1714#comment:4>
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