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-1.0.7
Starting     StateVar-1.2
Starting     base-orphans-0.8.1
Starting     base-compat-0.11.0
Building     StateVar-1.2
Building     base-orphans-0.8.1
Building     cabal-doctest-1.0.7
Building     base-compat-0.11.0
Completed    base-orphans-0.8.1
Starting     hashable-1.2.7.0
Completed    StateVar-1.2
Starting     integer-logarithms-1.0.3
Building     hashable-1.2.7.0
Building     integer-logarithms-1.0.3
Completed    cabal-doctest-1.0.7
Starting     random-1.1
Building     random-1.1
Completed    integer-logarithms-1.0.3
Starting     tagged-0.8.6
Building     tagged-0.8.6
Completed    hashable-1.2.7.0
Starting     th-abstraction-0.3.1.0
Building     th-abstraction-0.3.1.0
Completed    random-1.1
Starting     transformers-compat-0.6.5
Building     transformers-compat-0.6.5
Completed    base-compat-0.11.0
Starting     contravariant-1.5.2
Completed    tagged-0.8.6
Starting     unordered-containers-0.2.10.0
Building     contravariant-1.5.2
Building     unordered-containers-0.2.10.0
Completed    transformers-compat-0.6.5
Starting     splitmix-0.0.3
Completed    th-abstraction-0.3.1.0
Starting     universe-base-1.1.1
Building     splitmix-0.0.3
Completed    contravariant-1.5.2
Starting     distributive-0.6.1
Building     universe-base-1.1.1
Completed    splitmix-0.0.3
Starting     QuickCheck-2.13.2
Building     distributive-0.6.1
Building     QuickCheck-2.13.2
Completed    universe-base-1.1.1
Starting     universe-reverse-instances-1.1
Building     universe-reverse-instances-1.1
Completed    distributive-0.6.1
Starting     comonad-5.0.5
Completed    universe-reverse-instances-1.1
Completed    unordered-containers-0.2.10.0
Building     comonad-5.0.5
Completed    comonad-5.0.5
Starting     bifunctors-5.5.5
Building     bifunctors-5.5.5
Completed    QuickCheck-2.13.2
Completed    bifunctors-5.5.5
Starting     semigroupoids-5.3.3
Building     semigroupoids-5.3.3
Completed    semigroupoids-5.3.3
Starting     lattices-2.0.1
Building     lattices-2.0.1
Completed    lattices-2.0.1
Downloading  sign-0.4.4
Downloaded   sign-0.4.4
Starting     sign-0.4.4
Building     sign-0.4.4
Completed    sign-0.4.4