#18581: standard_packages()... should output installed and available versions
---------------------------+----------------------------
   Reporter:  jdemeyer     |            Owner:
       Type:  enhancement  |           Status:  new
   Priority:  major        |        Milestone:  sage-6.8
  Component:  misc         |         Keywords:
  Merged in:               |          Authors:
  Reviewers:               |  Report Upstream:  N/A
Work issues:               |           Branch:
     Commit:               |     Dependencies:  #18456
   Stopgaps:               |
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 Currently, the function `standard_packages()` only gives the latest
 available version of a package, not the version which is installed. I
 propose to actually return a list of triples
 {{{
 (package_name, installed_version, latest_version)
 }}}
 where `installed_version` is `None` if the package is not installed and
 `latest_version` is the newest available version.

 If, for example, arb-2.5.0 is installed but arb-2.6.0 is availble, then
 one such triple would be
 {{{
 ('arb', '2.5.0', '2.6.0')
 }}}

 If arb is not installed, this would be:
 {{{
 ('arb', None, '2.6.0')
 }}}

--
Ticket URL: <http://trac.sagemath.org/ticket/18581>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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