Hi, On a Debian stable (etch) system, I have the following packages installed: jochem@huygens:/tmp/Cabal-1.4.0.1$ dpkg -l | grep ghc ii ghc6 6.6-3 GHC - the Glasgow Haskell Compilation system ii ghc6-prof 6.6-3 Profiling libraries for the Glasgow Haskell ii libghc6-filepath-dev 0.11-2 GHC 6 library for manipulating FilePath's ii libghc6-mtl-dev 1.0-3 Haskell monad transformer library for GHC ii libghc6-network-dev 2.0-3 Haskell network library for GHC jochem@huygens:/tmp/Cabal-1.4.0.1$ ghc-pkg list /usr/lib/ghc-6.6/package.conf: Cabal-1.1.6, (FilePath-0.11), base-2.0, filepath-1.1.0.0, (ghc-6.6), haskell98-1.0, mtl-1.0, network-2.0, parsec-2.0, readline-1.0, regex-base-0.71, regex-compat-0.71, regex-posix-0.71, rts-1.0, stm-2.0, template-haskell-2.0, unix-1.0 jochem@huygens:/tmp/Cabal-1.4.0.1$ I compiled Setup.hs, ran './Setup configure', './Setup build' and finally as root './Setup install'. Then ghc-pkg list gave: jochem@huygens:/tmp/bimap-0.2.2$ ghc-pkg list /usr/lib/ghc-6.6/package.conf: Cabal-1.1.6, Cabal-1.4.0.1, (FilePath-0.11), base-2.0, filepath-1.1.0.0, (ghc-6.6), haskell98-1.0, mtl-1.0, network-2.0, parsec-2.0, readline-1.0, regex-base-0.71, regex-compat-0.71, regex-posix-0.71, rts-1.0, stm-2.0, template-haskell-2.0, unix-1.0 jochem@huygens:/tmp/bimap-0.2.2$ But Cabal seems to be broken; for example, with the bimap package from Hackage: jochem@huygens:/tmp/bimap-0.2.2$ runghc Setup.lhs configure Configuring bimap-0.2.2... Setup.lhs: ghc version >=6.4 is required but the version of /usr/bin/ghc could not be determined. jochem@huygens:/tmp/bimap-0.2.2$ Cabal 1.2.3.0 seems to be working. What am I doing wrong? Or is this an unsupported combination? -- Jochem Berndsen | jochem@functor.nl GPG: 0xE6FABFAB