On Mon, 2010-01-11 at 13:33 +0100, Henk-Jan van Tuyl wrote:
L.S.,
cabal upgrade hlint Resolving dependencies... cabal: cannot configure containers-0.3.0.0. It requires base >=4.2 && <6 For the dependency on base >=4.2 && <6 there are these packages:
I had a strange response from Cabal: base-4.2.0.0. However none of them are available. base-4.2.0.0 was excluded because of the top level dependency base -any
So, base-4.2.0.0 cannot be used, because any version of base is OK? Is this a bug in Cabal?
It's a bug in the sense that the error message is misleading. What it actually means is "base-4.2.0.0 cannot be used, because an installed version of base is required". The pretty printing for "installed constraints" (as opposed to version constraints) is borked. Duncan