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On 06:24 Wed 16 Apr , Ciaran McCreesh wrote:
> What all are blocks used for?
> a) Marking that two unrelated packages are mutually incompatible at
> runtime because they happen to collide, for example on a commonly named
> b) Marking that two related implementations are mutually incompatible at
> runtime because they both provide the same binary.
> c) Marking that a file that used to be provided by one package is now
> provided by another package that is either depending upon or depended
> upon by the original package.
> d) Marking that a package has been moved into another package.
> Are there any other uses?
A slight tweak that you may have already considered: a single package is
split into multiple packages with a metabuild (named the same as the
original single package) in a newer version -- for example, modularized
> For future EAPIs, being able to tell the package manager that your
> block is of one of the types above will help the package manager smooth
> out the upgrade path for users. For example, for class d) blocks such
> as the recent coreutils / mktemp mess, the package manager can suggest
> to the user to install the new package and then uninstall the old
> package, rather than forcing the user to uninstall the old package by
> hand (possibly leaving their system without critical utilities) and then
> install the new package.
> I strongly suspect that in many (but not all) cases the package manager
> could be making users' lives a lot easier than it currently is...
Sounds like a great idea.
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