Resolving dependencies... Configuring cereal-0.5.4.0... Configuring cml-0.1.3... Building cml-0.1.3... Building cereal-0.5.4.0... Installed cml-0.1.3 Configuring mtl-2.2.1... Building mtl-2.2.1... Configuring random-1.1... Installed cereal-0.5.4.0 Building random-1.1... Configuring network-2.6.3.1... Installed mtl-2.2.1 Building network-2.6.3.1... Configuring text-1.2.2.1... Installed random-1.1 Building text-1.2.2.1... Configuring transformers-compat-0.5.1.4... Installed network-2.6.3.1 Building transformers-compat-0.5.1.4... Installed transformers-compat-0.5.1.4 Configuring MonadRandom-0.4.2.3... Building MonadRandom-0.4.2.3... Configuring HsOpenSSL-0.11.3.2... Installed MonadRandom-0.4.2.3 Configuring random-shuffle-0.0.4... Installed text-1.2.2.1 Building HsOpenSSL-0.11.3.2... Building random-shuffle-0.0.4... Installed random-shuffle-0.0.4 Configuring parsec-3.1.11... Building parsec-3.1.11... Installed parsec-3.1.11 Configuring network-uri-2.6.1.0... Building network-uri-2.6.1.0... Installed HsOpenSSL-0.11.3.2 Installed network-uri-2.6.1.0 Configuring HTTP-4000.3.4... Building HTTP-4000.3.4... Installed HTTP-4000.3.4 Downloading HaskellTorrent-0.0... Configuring HaskellTorrent-0.0... Building HaskellTorrent-0.0... Failed to install HaskellTorrent-0.0 Build log ( /home/builder/.cabal/logs/HaskellTorrent-0.0.log ): cabal: Entering directory '/tmp/cabal-tmp-7853/HaskellTorrent-0.0' Configuring HaskellTorrent-0.0... Building HaskellTorrent-0.0... Preprocessing executable 'HaskellTorrent' for HaskellTorrent-0.0... src/Process.hs:164:2: error: error: #error Unknown GHC version #error Unknown GHC version ^ `gcc' failed in phase `C pre-processor'. (Exit code: 1) cabal: Leaving directory '/tmp/cabal-tmp-7853/HaskellTorrent-0.0' cabal: Error: some packages failed to install: HaskellTorrent-0.0 failed during the building phase. The exception was: ExitFailure 1