#15544: sage-download-file could use the metalink or torrent file for upstream
spkgs
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   Reporter:  schilly        |            Owner:
       Type:  PLEASE CHANGE  |           Status:  new
   Priority:  minor          |        Milestone:  sage-6.1
  Component:  misc           |         Keywords:
  Merged in:                 |          Authors:
  Reviewers:                 |  Report Upstream:  N/A
Work issues:                 |           Branch:
     Commit:                 |     Dependencies:
   Stopgaps:                 |
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 Since we have switched to Git and have this spkg/upsteam directory, it is
 also indexed it like the other mirrored files. This means, there is a
 metalink and and torrent file (webseeds only!) for each file. We could use
 `aria2c` as a nice command-line utility to download the file from all the
 mirrors with included verification.

 E.g.
 `/spkg/upstream/ipython/ipython-0.13.2.tar.bz2`
 has corresponding files:
 `/spkg/upstream/ipython/meta/ipython-0.13.2.tar.bz2.metalink|.torrent`

 The logic should be like this:


     if aria2c exists:
      if corresponding metalink file exists:
       aria2c ...
     else:
      continue with curl, wget, ...

 The only complication is, that it doesn't download to stdout. That must be
 wrapped somehow with a temporary file.

--
Ticket URL: <http://trac.sagemath.org/ticket/15544>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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