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
It's not a great error message. Yes, xmonad-0.9.1 requires base ==3.*. So far, so good. Now, base is a special package. It comes with ghc, and cannot be upgraded. That's why Cabal will rule out all base versions but the one you already have installed. If you have a recent ghc, that'll be base-4. So Cabal is correct to fail in this case: you cannot install this version of xmonad with this version of ghc. But yes, the error message could (and hopefully soon will) be improved. Cheers, Andres _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
