> Packages that explicitly depend on base-3.x will continue to work.
> Unfortunately these are few and far between, despite our warnings after the
> 6.8 release.

If this was reccomended practice, then I must have missed where it was
documented. In particular, the "Upgrading packages to work with recent
Cabal and GHC versions" link from haskell.org/cabal leads to
http://haskell.org/haskellwiki/Upgrading_packages, which suggests:

"""
library
  if flag(splitBase)
    build-depends: base >= 3, containers
  else
    build-depends: base < 3
"""

Unless my understanding is wrong, this will consume base-4 while
ignoring your new compatibility base-3.

Where should Haskellers be looking to find these reccomendations, if
not on the official Cabal site?

Cheers,
Max

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