Resolving dependencies... Configuring hmp3-1.3... Failed to install hmp3-1.3 Build log ( /home/builder/.cabal/logs/hmp3-1.3.log ): cabal: Entering directory '/tmp/cabal-tmp-19406/hmp3-1.3' [1 of 1] Compiling Main ( /tmp/cabal-tmp-19406/hmp3-1.3/dist/setup/setup.hs, /tmp/cabal-tmp-19406/hmp3-1.3/dist/setup/Main.o ) Linking /tmp/cabal-tmp-19406/hmp3-1.3/dist/setup/setup ... Warning: defaultUserHooks in Setup script is deprecated. Configuring hmp3-1.3... Warning: No 'build-type' specified. If you do not need a custom Setup.hs or ./configure script then use 'build-type: Simple'. Warning: Instead of 'ghc-options: -Icbits' use 'include-dirs: cbits' checking for mpg321... no checking for mpg123... no configure: error: You need mpg321 or mpg123 installed to run hmp3 cabal: Leaving directory '/tmp/cabal-tmp-19406/hmp3-1.3' cabal: Error: some packages failed to install: hmp3-1.3 failed during the configure step. The exception was: ExitFailure 1