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Re: virtual package question



On Thu, 16 Oct 2014, Miles Fidelman wrote:
> - how does one explicitly install a lower-priority alternative, and

You just explicitly install it.

For example, if you were installing something that needed
mail-transport-agent, but didn't already have something that provided
it, and didn't want exim4, you'd install the package which provided
mail-transport-agent along with the whatever else you were installing.

> - what, if anything, prevents the default alternative from being
> reinstalled during a future install (e.g, as part of a dependency
> fulfillment or an updgrade)?

If the dependency is already satisfied, nothing new would be installed.

The main case you'd have to be aware of is when the dependency wasn't
actually satisfied.

-- 
Don Armstrong                      http://www.donarmstrong.com

Religion is religion, however you wrap it, and like Quell says, a
preoccupation with the next world clearly signals an inability to cope
credibly with this one.
 -- Richard K. Morgan "Broken Angels" p65


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