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     erf-2.0.0.0
Starting     cabal-doctest-1.0.6
Starting     base-orphans-0.8.1
Building     StateVar-1.2
Building     base-orphans-0.8.1
Building     erf-2.0.0.0
Building     cabal-doctest-1.0.6
Completed    base-orphans-0.8.1
Starting     primitive-0.7.0.0
Completed    erf-2.0.0.0
Starting     random-1.1
Completed    StateVar-1.2
Starting     tagged-0.8.6
Building     primitive-0.7.0.0
Building     random-1.1
Building     tagged-0.8.6
Completed    cabal-doctest-1.0.6
Starting     th-abstraction-0.3.1.0
Building     th-abstraction-0.3.1.0
Completed    tagged-0.8.6
Starting     transformers-compat-0.6.5
Completed    random-1.1
Starting     contravariant-1.5.2
Building     transformers-compat-0.6.5
Building     contravariant-1.5.2
Completed    th-abstraction-0.3.1.0
Starting     distributive-0.6
Completed    transformers-compat-0.6.5
Completed    contravariant-1.5.2
Building     distributive-0.6
Completed    distributive-0.6
Starting     comonad-5.0.5
Completed    primitive-0.7.0.0
Starting     tf-random-0.5
Building     tf-random-0.5
Building     comonad-5.0.5
Completed    tf-random-0.5
Starting     QuickCheck-2.12.6.1
Building     QuickCheck-2.12.6.1
Completed    comonad-5.0.5
Starting     bifunctors-5.5.4
Building     bifunctors-5.5.4
Completed    bifunctors-5.5.4
Starting     profunctors-5.4
Starting     barbies-1.1.2.1
Building     profunctors-5.4
Building     barbies-1.1.2.1
Completed    barbies-1.1.2.1
Completed    QuickCheck-2.12.6.1
Completed    profunctors-5.4
Starting     generic-lens-1.1.0.0
Building     generic-lens-1.1.0.0
Completed    generic-lens-1.1.0.0
Downloading  higgledy-0.2.1.0
Downloaded   higgledy-0.2.1.0
Starting     higgledy-0.2.1.0
Building     higgledy-0.2.1.0
Completed    higgledy-0.2.1.0