Resolving dependencies... Configuring mtl-2.2.1... Configuring primitive-0.6.2.0... Building primitive-0.6.2.0... Building mtl-2.2.1... Installed mtl-2.2.1 Configuring stm-2.4.4.1... Building stm-2.4.4.1... Configuring transformers-compat-0.5.1.4... Installed primitive-0.6.2.0 Installed stm-2.4.4.1 Configuring vector-0.12.0.1... Building transformers-compat-0.5.1.4... Building vector-0.12.0.1... Installed transformers-compat-0.5.1.4 Configuring mmorph-1.1.0... Building mmorph-1.1.0... Configuring transformers-base-0.4.4... Installed mmorph-1.1.0 Building transformers-base-0.4.4... Configuring exceptions-0.8.3... Installed transformers-base-0.4.4 Building exceptions-0.8.3... Configuring monad-control-1.0.2.2... Installed exceptions-0.8.3 Building monad-control-1.0.2.2... Installed monad-control-1.0.2.2 Configuring lifted-base-0.2.3.11... Building lifted-base-0.2.3.11... Installed lifted-base-0.2.3.11 Configuring resourcet-1.1.9... Building resourcet-1.1.9... Installed resourcet-1.1.9 Configuring conduit-1.2.11... Building conduit-1.2.11... Installed vector-0.12.0.1 Installed conduit-1.2.11 Configuring conduit-audio-0.2.0.3... Building conduit-audio-0.2.0.3... Installed conduit-audio-0.2.0.3 Downloading conduit-audio-lame-0.1.2.1... Configuring conduit-audio-lame-0.1.2.1... Failed to install conduit-audio-lame-0.1.2.1 Build log ( /home/builder/.cabal/logs/conduit-audio-lame-0.1.2.1.log ): cabal: Entering directory '/tmp/cabal-tmp-15647/conduit-audio-lame-0.1.2.1' Configuring conduit-audio-lame-0.1.2.1... cabal: Missing dependency on a foreign library: * Missing C library: mp3lame This problem can usually be solved by installing the system package that provides this library (you may need the "-dev" version). If the library is already installed but in a non-standard location then you can use the flags --extra-include-dirs= and --extra-lib-dirs= to specify where it is. cabal: Leaving directory '/tmp/cabal-tmp-15647/conduit-audio-lame-0.1.2.1' cabal: Error: some packages failed to install: conduit-audio-lame-0.1.2.1 failed during the configure step. The exception was: ExitFailure 1