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     clock-0.8
Starting     semigroups-0.19.1
Starting     hashable-1.3.0.0
Building     clock-0.8
Building     semigroups-0.19.1
Building     hashable-1.3.0.0
Completed    semigroups-0.19.1
Completed    clock-0.8
Starting     extra-1.6.18
Building     extra-1.6.18
Completed    hashable-1.3.0.0
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    extra-1.6.18
Completed    unordered-containers-0.2.10.0
Downloading  Unique-0.4.7.7
Downloaded   Unique-0.4.7.7
Starting     Unique-0.4.7.7
Building     Unique-0.4.7.7
Completed    Unique-0.4.7.7