[kepler-dev] [Bug 4516] Module Manager needs ability to install modules needed by KARs

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=4516

--- Comment #6 from Chad Berkley <berkley at nceas.ucsb.edu> 2010-01-08 12:40:27 PST ---
Couple more issues here:

* I should have used the MANIFEST/dependsOnModule attribute instead of
including a modules.txt file in the kar.

A couple questions arise from this:

1) Right now, the infrastructure to download a module tied to a kar file is
dependent upon the GUI.  Do we want this feature tied to the GUI or not?  The
way I have it written now, the downloading happens automatically when a kar
file is cached with no user input.  This puts the burden on the developer of
the kar to list a module dependency in an intelligent way.  This could cause
problems with users who are unfamiliar with the kars that they have downloaded
or if the developer unknowingly lists a module that will conflict with another.

2) What about command line execution?  Do we want our kars to be able to
automatically get dependent modules when kepler is run from the command line?

3) this feature is in the roadmap.  Given the problems with potentially
corrupting a user's environment, should we reconsider this functionality until
kepler 2.0 is more mature?  

For now, I will change this to use the existing infrastructure and we can
discuss these issues on the next conf. call.

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