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     StateVar-1.2
Starting     cabal-doctest-1.0.8
Starting     groups-0.4.1.0
Starting     base-orphans-0.8.1
Building     StateVar-1.2
Building     groups-0.4.1.0
Building     cabal-doctest-1.0.8
Building     base-orphans-0.8.1
Completed    base-orphans-0.8.1
Starting     hashable-1.3.0.0
Completed    groups-0.4.1.0
Starting     newtype-generics-0.5.4
Completed    StateVar-1.2
Starting     semigroups-0.19.1
Building     hashable-1.3.0.0
Building     newtype-generics-0.5.4
Building     semigroups-0.19.1
Completed    cabal-doctest-1.0.8
Starting     tagged-0.8.6
Building     tagged-0.8.6
Completed    semigroups-0.19.1
Starting     th-abstraction-0.3.1.0
Completed    newtype-generics-0.5.4
Starting     transformers-compat-0.6.5
Building     th-abstraction-0.3.1.0
Building     transformers-compat-0.6.5
Completed    hashable-1.3.0.0
Starting     contravariant-1.5.2
Building     contravariant-1.5.2
Completed    tagged-0.8.6
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    transformers-compat-0.6.5
Starting     distributive-0.6.1
Completed    th-abstraction-0.3.1.0
Completed    contravariant-1.5.2
Building     distributive-0.6.1
Completed    distributive-0.6.1
Starting     comonad-5.0.5
Building     comonad-5.0.5
Completed    unordered-containers-0.2.10.0
Completed    comonad-5.0.5
Starting     bifunctors-5.5.5
Building     bifunctors-5.5.5
Completed    bifunctors-5.5.5
Starting     semigroupoids-5.3.3
Building     semigroupoids-5.3.3
Completed    semigroupoids-5.3.3
Downloading  monoid-extras-0.5.1
Downloaded   monoid-extras-0.5.1
Starting     monoid-extras-0.5.1
Building     monoid-extras-0.5.1
Completed    monoid-extras-0.5.1
Downloading  dual-tree-0.2.2.1
Downloaded   dual-tree-0.2.2.1
Starting     dual-tree-0.2.2.1
Building     dual-tree-0.2.2.1
Completed    dual-tree-0.2.2.1