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     cereal-0.5.8.1
Starting     string-conv-0.1.2
Starting     primitive-0.7.0.0
Building     cereal-0.5.8.1
Building     string-conv-0.1.2
Building     primitive-0.7.0.0
Completed    string-conv-0.1.2
Completed    cereal-0.5.8.1
Completed    primitive-0.7.0.0
Starting     vector-0.12.0.3
Building     vector-0.12.0.3
Completed    vector-0.12.0.3
Downloading  ruby-marshal-0.1.3
Downloaded   ruby-marshal-0.1.3
Starting     ruby-marshal-0.1.3
Building     ruby-marshal-0.1.3
Completed    ruby-marshal-0.1.3