Resolving dependencies... Configuring ghc-server-1.2... Building ghc-server-1.2... Preprocessing library ghc-server-1.2... In-place registering ghc-server-1.2... Running Haddock for ghc-server-1.2... cabal: Haddock's internal GHC version must match the configured GHC version. The GHC version is 7.10.2 but haddock is using GHC version 7.8.3 Creating package registration file: /tmp/pkgConf-ghc-server-1336465782861021530.2 Installing library in /home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-7.10.2/ghc-server-1.2-KbpL4sM2SEgCGKP46LdXLA Registering ghc-server-1.2... Installed ghc-server-1.2