> If we could all agree on a particular set
> of cran packages to be used with a certain release of R, then it doesn't
> matter
> how the 'snapshotting' gets implemented.
This is pretty much the sticking point, though. I see no practical way of
reaching that agreement without the kind of decision authority (and effort)
that Linux distro maintainers put in to the internal consistency of each
distribution.
CRAN doesn't try to do that; it's just a place to access packages offered by
maintainers.
As a package maintainer, I think support for critical version dependencies in
the imports or dependency lists is a good idea that individual package
maintainers could relatively easily manage, but I think freezing CRAN as a
whole or adopting single release cycles for CRAN would be thoroughly
impractical.
S Ellison
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