Hi, Could anyone shed light on the meaning of this error message? cabal: cannot configure xmonad-0.9.1 It requires base ==3.* For the dependency on base ==3.* there are these packages: base-3.0.3.1 and base-3.0.3.2. However none of them are available. base-3.0.3.1 was excluded because of the top level dependency base -any base-3.0.3.2 was excluded because of the top level dependency base -any My guess is that "-any" would mean either that any version is acceptable (in which case should always work, including this time) or that "-any" means that any version is unacceptable, in which case it would never work, which is daft. So clearly I don't understand what it is trying to say. Any hints? Is this documented anywhere? Thanks.