On Mon, Apr 26, 2010 at 19:38, Ivan Lazar Miljenovic <[email protected]> wrote: > Bjorn Buckwalter <[email protected]> writes: >> Why does cabal seem to prefer base-3.0.3.2 over base-4.2.0.0 when >> installing packages with an unqualified base requirement? Example: > > You mean cabal-install rather than Cabal. The reason that base-3 is > chosen is because many of these old libraries won't build with base-4; > as such, if no upper bound restriction is found on the base package then > base-3 is chosen as it is more likely to work than base-4 (there were a > _lot_ of breakages when base-4 first came out with 6.10.1).
I see, I guess that's pragmatic although the deprecation warning is unfortunate. (I'm aware of the cabal-install versus Cabal distinction, but I understand that cabal-install uses Cabal to resolve dependencies; thus I assumed Cabal was the culprit.) Thanks, Bjorn >> $ cabal install -v fad --reinstall >> [snip] >> Resolving dependencies... >> selecting fad-1.0 (hackage) >> selecting base-3.0.3.2 (installed) and 4.2.0.0 (installed) and discarding >> syb-0.1.0.0, 0.1.0.1, 0.1.0.2, 0.1.0.3, 0.2 and 0.2.1 >> [snip] >> Configuring fad-1.0... >> Dependency base ==3.0.3.2: using base-3.0.3.2 >> [snip] >> [1 of 1] Compiling Numeric.FAD ( Numeric/FAD.hs, >> dist/build/Numeric/FAD.o ) >> >> Numeric/FAD.hs:1:0: >> Warning: Module `Prelude' is deprecated: >> You are using the old package `base' version 3.x. >> Future GHC versions will not support base version 3.x. You >> should update your code to use the new base version 4.x. >> [snip] >> > > -- > Ivan Lazar Miljenovic > [email protected] > IvanMiljenovic.wordpress.com > _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
