Public SourceMage Discussion List

[Jaka Kranjc <lynx AT mages.ath.cx>]

Hi, I'm wondering if anyone has any explicit suggestions about improving the 
sub dependency docs:
http://wiki.sourcemage.org/SUB_DEPENDS
http://wiki.sourcemage.org/PRE_SUB_DEPENDS

Subdependencies have an (unjust) status of being black magic, but they are 
actually not that hard to use and the benefits for the user can* be big.
If anyone doesn't know yet, they enable us to not only depend on some spell, 
but to specifically request a feature or few (p.e. an enabled optional 
dependency). Live examples are on the wiki (they will be expanded as we get 
more interesting cases).

The specs are a bit outdated and complicated, so maybe it is best to avoid 
pondering too long about that and focus on the "practical" aspects of 
things - the spell files. 

If you're looking for an exercise/test, here are some real subdep tasks:
kdebase needs qt-x11 compiled with multithreading support.
http://bugs.sourcemage.org/show_bug.cgi?id=9472
http://bugs.sourcemage.org/show_bug.cgi?id=10726
...

So I'll repeat; any constructive comments on the docs or code questions are 
most welcome.

--
*or will be, currently subdependencies are only used in devel sorcery. That 
doesn't mean you shouldn't use them as we have fallbacks in libcompat for 
stable/test users.

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