Public SourceMage Discussion List

["Sergey A. Lipnevich" <sergey AT optimaltec.com>]

Quoting Andrew <afrayedknot AT thefrayedknot.armory.com>:

> Is there a way to ensure that spells always link against the newer
> library and not the older one? I think if thats possible then having

Yes there is. The new spells are supposed to use links, not the real SO name:
/usr/lib/libssl.so   -> libssl.so.0
/usr/lib/libssl.so.0 -> libssl.so.0.9.7 (or .8 for the new version)

> the 0.9.7-so spell would be preferable and avoid breakage. On updates
> it could up-trigger anything thats still linked against it or dispel itself
> if nothing is left. Sort of a self-healing type of thing.

Exactly.

> Also, wrt to ordering, openssl-0.9.7-so could cast before openssl,
> and openssl can just be careful in PRE_INSTALL not to remove the 0.9.7
> libs. Theres a few possible solutions for that. Motivation being to
> minimize the time where the 0.9.7 so is missing.

Old openssl would have to dispel the same files as installed by
openssl-0.9.7-so, so I think it's better to have 
openssl-0.9.7-so/TRIGGERS with
"on_cast openssl cast_self".

My understanding is that what Seth proposing is to extend this kind of
work-around for any spell that wishes to use it.

Sergey.