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     cabal-doctest-1.0.6
Starting     cereal-0.5.8.0
Starting     integer-logarithms-1.0.3
Starting     hashable-1.2.7.0
Building     cereal-0.5.8.0
Building     integer-logarithms-1.0.3
Building     cabal-doctest-1.0.6
Building     hashable-1.2.7.0
Completed    integer-logarithms-1.0.3
Starting     primitive-0.6.4.0
Building     primitive-0.6.4.0
Completed    cabal-doctest-1.0.6
Starting     transformers-compat-0.6.4
Building     transformers-compat-0.6.4
Completed    hashable-1.2.7.0
Starting     void-0.7.2
Building     void-0.7.2
Completed    void-0.7.2
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    transformers-compat-0.6.4
Completed    cereal-0.5.8.0
Completed    unordered-containers-0.2.10.0
Completed    primitive-0.6.4.0
Starting     scientific-0.3.6.2
Building     scientific-0.3.6.2
Completed    scientific-0.3.6.2
Starting     bytes-0.15.5
Building     bytes-0.15.5
Completed    bytes-0.15.5
Downloading  bits-0.5.2
Downloaded   bits-0.5.2
Starting     bits-0.5.2
Building     bits-0.5.2
Completed    bits-0.5.2