what is the point of semodule -u?

[Russell Coker <russell@coker.com.au>]

semodule supports options "-i" for install and "-u" for upgrade.  It seems 
that "semodule -i" will upgrade a module, so what is the point 
of "semodule -u"?  Are we assuming that a user or script that calls semodule 
doesn't know what it is doing and relies on the "-u" option refusing to 
install the same (or an older) version for correct results?

If so then I doubt that it will work well as I don't think that versions can 
be tracked accurately with the way the code is developed (EG a new release 
from a distribution vendor might have a higher version number than your local 
customisation even though your local changes are more relevant for your 
environment).

-- 
russell@coker.com.au
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