Resolving dependencies... Configuring base-compat-0.9.3... Building base-compat-0.9.3... Installed base-compat-0.9.3 Configuring markdown-unlit-0.5.0... Building markdown-unlit-0.5.0... Installed markdown-unlit-0.5.0 Configuring generics-eot-0.3... Building generics-eot-0.3... Failed to install generics-eot-0.3 Build log ( /home/builder/.cabal/logs/ghc-8.2.2/generics-eot-0.3-KMBnxw4LgkDHUv9qaEKTFH.log ): cabal: Entering directory '/tmp/cabal-tmp-4762/generics-eot-0.3' Configuring generics-eot-0.3... Preprocessing library for generics-eot-0.3.. Building library for generics-eot-0.3.. ghc: could not execute: markdown-unlit cabal: Leaving directory '/tmp/cabal-tmp-4762/generics-eot-0.3' cabal: Error: some packages failed to install: generics-eot-0.3-KMBnxw4LgkDHUv9qaEKTFH failed during the building phase. The exception was: ExitFailure 1