Mailinglist Archive: zypp-devel (78 mails)

[Martin Vidner <mvidner@xxxxxxx>]

On Fri, Nov 09, 2007 at 03:27:18PM +0100, Klaus Kaempf wrote:
> * Martin Vidner <mvidner@xxxxxxx> [Nov 09. 2007 15:12]:
> > On Fri, Nov 09, 2007 at 02:20:27PM +0100, Klaus Kaempf wrote:
> > > as sat-solver/doc/README.policy
> >
> > http://svn.opensuse.org/viewcvs/zypp/trunk/sat-solver/doc/README.policy?view=markup
> >
> > anyway, beware of overengineering.
>
> You're invited to help in this regard ;-)

OK...
Here's how I see it in order of increasing complexity:

A) No policies.

Just hardcode it in the solver.

B) No interface.

Code it in the solver, but parametrize the decisions by
/etc/zypp/zypp.conf:
solver.prefer_arch_over_version = false
solver.downgrade_automatic = false
solver.downgrade_user = true (?)
solver.uninstall
solver.vendor_change

C) Interface.

Like (B), but separate the decision code from the solver.
I see a single interface point now:

        policy->get_boolean("prefer_arch_over_version")

D) Scriptable Pluggable Chainable whatever

-- 
Martin Vidner, YaST developer
http://en.opensuse.org/User:Mvidner

Kuracke oddeleni v restauraci je jako fekalni oddeleni v bazenu
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