Resolving dependencies... Starting split-0.2.3.4 Starting primitive-0.7.1.0 Starting base-orphans-0.8.4 Starting hashable-1.3.0.0 Building split-0.2.3.4 Building base-orphans-0.8.4 Building primitive-0.7.1.0 Building hashable-1.3.0.0 Completed split-0.2.3.4 Starting splitmix-0.1.0.3 Building splitmix-0.1.0.3 Completed hashable-1.3.0.0 Starting unliftio-core-0.2.0.1 Building unliftio-core-0.2.0.1 Completed splitmix-0.1.0.3 Starting unordered-containers-0.2.13.0 Completed base-orphans-0.8.4 Starting random-1.2.0 Completed unliftio-core-0.2.0.1 Starting storable-complex-0.2.3.0 Building unordered-containers-0.2.13.0 Building random-1.2.0 Building storable-complex-0.2.3.0 Completed storable-complex-0.2.3.0 Completed random-1.2.0 Completed primitive-0.7.1.0 Starting resourcet-1.2.4.2 Starting vector-0.12.2.0 Building resourcet-1.2.4.2 Building vector-0.12.2.0 Completed unordered-containers-0.2.13.0 Completed resourcet-1.2.4.2 Completed vector-0.12.2.0 Starting vector-fftw-0.1.4.0 Starting vector-algorithms-0.8.0.4 Building vector-algorithms-0.8.0.4 Failed to install vector-fftw-0.1.4.0 Build log ( /home/builder/.cabal/logs/ghc-8.10.2/vector-fftw-0.1.4.0-DG0GrwpR3RqJVTj15vbNPf.log ): cabal: Entering directory '/tmp/cabal-tmp-21378/vector-fftw-0.1.4.0' Configuring vector-fftw-0.1.4.0... cabal: Missing dependency on a foreign library: * Missing (or bad) C library: fftw3 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.If the library file does exist, it may contain errors that are caught by the C compiler at the preprocessing stage. In this case you can re-run configure with the verbosity flag -v3 to see the error messages. cabal: Leaving directory '/tmp/cabal-tmp-21378/vector-fftw-0.1.4.0' Completed vector-algorithms-0.8.0.4 cabal: Error: some packages failed to install: vector-fftw-0.1.4.0-DG0GrwpR3RqJVTj15vbNPf failed during the configure step. The exception was: ExitFailure 1 vocoder-0.1.0.0-7j3bSGJgUoUHuRRY4UqaKl depends on vocoder-0.1.0.0 which failed to install. vocoder-conduit-0.1.0.0-4mzTcFSxBfJLTJlQTL4TCd depends on vocoder-conduit-0.1.0.0 which failed to install.