Could you add this info/link to the upgrading page? http://www.haskell.org/haskellwiki/Upgrading_packages#Arrow_instances>, Using social/community processes to parallelise the job of finding all the upgrade routes -- I like it :-) -- Don conal:
Hi Wolfgang,
I use CPP to manage such differences between 6.8, 6.9, and 6.10. As an example, see [1]http://hackage.haskell.org/packages/archive/TypeCompose/latest/doc/html/src/... .
Regards, - Conal
On Tue, Nov 18, 2008 at 6:01 AM, Wolfgang Jeltsch <[2]g9ks157k@acme.softbase.org> wrote:
Hello,
how do I make a library work with both GHC 6.8 and GHC 6.10? According to <[3]http://www.haskell.org/haskellwiki/Upgrading_packages#Arrow_instances>, I should change all my Arrow instances but then they don't work with GHC 6.8 anymore, do they? Or is the solution to force GHC 6.8 users to use base-4.0.0.0?
Best wishes, Wolfgang _______________________________________________ Haskell-Cafe mailing list [4]Haskell-Cafe@haskell.org [5]http://www.haskell.org/mailman/listinfo/haskell-cafe
References
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