Re: Excess copies of libdb
> Note that upgrading applications to new libdb versions is generally more
> work than you expect, as on-disk databases need to be upgraded.
> Sometimes you can use the db*_upgrade tools, sometimes you can dump and
> reload, sometimes it's acceptable and much easier to trash the database
> and rebuild it from scratch (man-db). It's even worse in libraries where
> you might not realize that applications linked against you are using the
> libdb interface you expose, and you might not be able to do anything
> about the applications' databases in the library's maintainer scripts.
On the other hand, there are cases where you can seamlessly upgrade to a
newer version without modifying the databases at all.
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