#18514: Upgrade of group cohomology spkg
-------------------------------------+-------------------------------------
       Reporter:  SimonKing          |        Owner:
           Type:  defect             |       Status:  needs_work
       Priority:  major              |    Milestone:  sage-6.8
      Component:  packages:          |   Resolution:
  optional                           |    Merged in:
       Keywords:  group cohomology   |    Reviewers:
        Authors:  Simon King         |  Work issues:  Create a new-style
Report Upstream:  None of the above  |  package with least effort
  - read trac for reasoning.         |       Commit:
         Branch:                     |  cd644a301bd2a9c57b5c719bb47a4733c75e347b
  u/SimonKing/upgrade_of_group_cohomology_spkg|     Stopgaps:
   Dependencies:  #12103             |
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Comment (by SimonKing):

 Replying to [comment:115 SimonKing]:
 > - What is a natural location for a data file that is part of the
 SageMath distribution?

 Perhaps I should add that the old spkg used several default locations for
 data.

 - `SAGE_SHARE/pGroupCohomology` for data that are obtained during
 installation of the package, which are shared among different users of one
 Sage installation, and which are not supposed to be modified by a user,
 unless (s)he knows what (s)he is doing and has write permission.
 - `DOT_SAGE/pGroupCohomology` for data that are created by a user, and
 which are only available to this user.

 Is `SAGE_SHARE/pGroupCohomology` still a good location for shared data? If
 that is the case, then I think `GroupNames.sobj` should go there. But how?
 If I understand correctly, SAGE_SHARE is not under version control. Is it
 a possibility to add these data files in the modular_resolution tarball,
 and modifying its Makefile so that the data are installed in
 `SAGE_SHARE/pGroupCohomology`?

--
Ticket URL: <http://trac.sagemath.org/ticket/18514#comment:118>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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