Downloading http://hackage.haskell.org/package/liquid-fixpoint-0.2.0.0/candidate/liquid-fixpoint-0.2.0.0.tar.gz Configuring liquid-fixpoint-0.2.0.0... setup: The following package dependencies were requested --dependency='unordered-containers=unordered-containers-0.2.5.1-7931867940bdceb94c480ef0619fb92b' --dependency='text-format=text-format-0.3.1.1-baa172ef45f8db90c29981a8f777d238' --dependency='text=text-1.2.1.3-4d5a85ef41c32933350e76063fc69929' --dependency='syb=syb-0.6-2eac1c6f53105321c72ac57e23081761' --dependency='parsec=parsec-3.1.9-c2159e2966531acf21bf2522a9d3c216' --dependency='mtl=mtl-2.2.1-bfb998dc8c11466235d862ade6fe90ac' --dependency='intern=intern-0.9.1.4-a58255b8b0f3ba334b5005b00a5dbaa6' --dependency='hashable=hashable-1.2.3.3-a24cfcc316a06dc20f7d4f37d5029a07' --dependency='filemanip=filemanip-0.3.6.3-084a33133de5c601996034a18cab4159' --dependency='cmdargs=cmdargs-0.10.13-5d35bd4790acb48c6e3346fc7b3118b9' --dependency='bifunctors=bifunctors-5.1-dcf71160f0d82119077797419062a5c0' --dependency='attoparsec=attoparsec-0.13.0.1-6c1dca7c91cf58666f0446be739f1fb6' --dependency='ansi-terminal=ansi-terminal-0.6.2.3-f6781f0f2767df49990dd6b9a0469daa' however the given installed package instance does not exist. Failed to install liquid-fixpoint-0.2.0.0 cabal: Error: some packages failed to install: liquid-fixpoint-0.2.0.0 failed during the configure step. The exception was: ExitFailure 1