Resolving dependencies... Configuring base-orphans-0.6... Configuring cabal-doctest-1.0.2... Building base-orphans-0.6... Building cabal-doctest-1.0.2... 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 void-0.7.2... Installed semigroups-0.18.3 Building void-0.7.2... Configuring transformers-compat-0.5.1.4... Installed stm-2.4.4.1 Configuring StateVar-1.1.0.4... Installed void-0.7.2 Building transformers-compat-0.5.1.4... Building StateVar-1.1.0.4... Installed transformers-compat-0.5.1.4 Configuring tagged-0.8.5... Installed StateVar-1.1.0.4 Configuring contravariant-1.4... Building tagged-0.8.5... Building contravariant-1.4... Installed tagged-0.8.5 Configuring distributive-0.5.2... Installed contravariant-1.4 Building distributive-0.5.2... Installed distributive-0.5.2 Configuring comonad-5.0.1... Building comonad-5.0.1... 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 Configuring saltine-0.0.0.5... Failed to install saltine-0.0.0.5 Build log ( /home/builder/.cabal/logs/saltine-0.0.0.5.log ): cabal: Entering directory '/tmp/cabal-tmp-2234/saltine-0.0.0.5' Configuring saltine-0.0.0.5... 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-2234/saltine-0.0.0.5' cabal: Error: some packages failed to install: saltine-0.0.0.5 failed during the configure step. The exception was: ExitFailure 1