[tahoe-lafs-trac-stream] [zfec] #17: remove dependency on zbase32 and pyutil

[zfec]

#17: remove dependency on zbase32 and pyutil
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 Reporter:  daira           |          Owner:  somebody
     Type:  defect          |         Status:  new
 Priority:  major           |      Milestone:
Component:  component1      |        Version:
 Keywords:  zbase32 pyutil  |  Launchpad Bug:
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 These are weak dependencies in the sense that zfec will work without them,
 but they have confused users and packagers of Tahoe-LAFS (e.g. see
 ​http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683331), and are
 potential sources of packaging bugs. For example...

 Alan Fairless at SpiderOak wrote:
 > FYI: I just noticed that newest zbase32 and pyutil are now mutually
 dependent on each other.
 >
 > In order to make the toolchain builder happy, I'm first installing
 zbase32 1.1.3, then pyutil 1.9.7, then upgrade zbase32 to 1.3.5.

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Ticket URL: <https://tahoe-lafs.org/trac/zfec/ticket/17>
zfec <https://tahoe-lafs.org/trac/zfec>
efficient erasure-coding library