patch applied (cabal-install): Take preferred versions into account
in dependency planning
duncan.coutts at worc.ox.ac.uk
Mon Oct 6 03:08:18 EDT 2008
Sun Oct 5 22:51:29 PDT 2008 Duncan Coutts <duncan at haskell.org>
* Take preferred versions into account in dependency planning
This means we can now globally prefer base 3 rather than 4.
However we need to be slightly careful or we end up deciding
to do silly things like rebuild haskell98 against base 3.
That would happen because the h98 package doesn't constrain
the choice to one or the other and we would prefer base 3.
So we have to add that we really prefer whatever it uses
currently (if any).
M ./Distribution/Client/Dependency/TopDown.hs -12 +30
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