Resolving dependencies... Configuring base-orphans-0.6... Configuring cabal-doctest-1.0.2... Building cabal-doctest-1.0.2... Building base-orphans-0.6... Installed base-orphans-0.6 Configuring semigroups-0.18.3... Configuring stm-2.4.4.1... Installed cabal-doctest-1.0.2 Building semigroups-0.18.3... Building stm-2.4.4.1... Configuring transformers-compat-0.5.1.4... Installed semigroups-0.18.3 Building transformers-compat-0.5.1.4... Configuring void-0.7.2... Installed stm-2.4.4.1 Building void-0.7.2... Configuring StateVar-1.1.0.4... Installed transformers-compat-0.5.1.4 Building StateVar-1.1.0.4... Installed void-0.7.2 Configuring tagged-0.8.5... Building tagged-0.8.5... Installed StateVar-1.1.0.4 Configuring contravariant-1.4... Building contravariant-1.4... Installed tagged-0.8.5 Configuring distributive-0.5.2... Installed contravariant-1.4 Building distributive-0.5.2... Warning: /tmp/pkgConf-distributive-0.51497983152038664370.2: Unrecognized field dynamic-library-dirs on line 22 Installed distributive-0.5.2 Configuring comonad-5.0.1... Building comonad-5.0.1... Warning: /tmp/pkgConf-comonad-5.013780686242999170.1: Unrecognized field dynamic-library-dirs on line 29 Installed comonad-5.0.1 Configuring bifunctors-5.4.2... Building bifunctors-5.4.2... Installed bifunctors-5.4.2 Configuring profunctors-5.2... Building profunctors-5.2... Installed profunctors-5.2 Downloading saltine-0.0.1.0... Configuring saltine-0.0.1.0... Failed to install saltine-0.0.1.0 Build log ( /home/builder/.cabal/logs/saltine-0.0.1.0.log ): cabal: Entering directory '/tmp/cabal-tmp-5809/saltine-0.0.1.0' Configuring saltine-0.0.1.0... cabal: Missing dependency on a foreign library: * Missing C library: sodium 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-5809/saltine-0.0.1.0' cabal: Error: some packages failed to install: saltine-0.0.1.0 failed during the configure step. The exception was: ExitFailure 1