Warning: The install command is a part of the legacy v1 style of cabal usage. Please switch to using either the new project style and the new-install command or the legacy v1-install alias as new-style projects will become the default in the next version of cabal-install. Please file a bug if you cannot replicate a working v1- use case with the new-style commands. For more information, see: https://wiki.haskell.org/Cabal/NewBuild Resolving dependencies... Starting random-1.1 Starting semigroups-0.19 Starting base-orphans-0.8.1 Starting primitive-0.7.0.0 Building semigroups-0.19 Building random-1.1 Building base-orphans-0.8.1 Building primitive-0.7.0.0 Completed semigroups-0.19 Starting split-0.2.3.3 Completed base-orphans-0.8.1 Starting storable-complex-0.2.3.0 Building split-0.2.3.3 Building storable-complex-0.2.3.0 Completed storable-complex-0.2.3.0 Completed random-1.1 Completed split-0.2.3.3 Completed primitive-0.7.0.0 Starting vector-0.12.0.3 Building vector-0.12.0.3 Completed vector-0.12.0.3 Starting hmatrix-0.19.0.0 Building hmatrix-0.19.0.0 Completed hmatrix-0.19.0.0 Starting hmatrix-gsl-stats-0.4.1.8 Failed to install hmatrix-gsl-stats-0.4.1.8 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/hmatrix-gsl-stats-0.4.1.8-82m7C90KG3eGRGqFNxuh35.log ): cabal: Entering directory '/tmp/cabal-tmp-11572/hmatrix-gsl-stats-0.4.1.8' Configuring hmatrix-gsl-stats-0.4.1.8... cabal: Missing dependency on a foreign library: * Missing (or bad) C library: gsl 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-11572/hmatrix-gsl-stats-0.4.1.8' cabal: Error: some packages failed to install: hmatrix-gsl-stats-0.4.1.8-82m7C90KG3eGRGqFNxuh35 failed during the configure step. The exception was: ExitFailure 1