Re: [Haskell-beginners] cabal install snap-server-0.9.5.1: At least the following dependencies are missing: attoparsec >=0.10 && <0.13 && ==0.13.0.1

snap-server-0.9.5.1 failed during the configure step.

just a guess: ________ https://hackage.haskell.org/package/snap-server-0.9.5.1/src/snap-server.caba... attoparsec >= 0.10 && < 0.13, ________ this line seems odd: attoparsec >=0.10 && <0.13 && ==0.13.0.1 particularly this part: <0.13 && ==0.13.0.1 maybe try to use sandbox?