Bjorn Buckwalter <bjorn.buckwal...@gmail.com> 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). > > > $ 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 ivan.miljeno...@gmail.com IvanMiljenovic.wordpress.com _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe