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-1.0.8
Starting     base-orphans-0.8.2
Starting     exceptions-0.10.4
Starting     StateVar-1.2
Building     base-orphans-0.8.2
Building     cabal-doctest-1.0.8
Building     exceptions-0.10.4
Building     StateVar-1.2
Completed    StateVar-1.2
Starting     hashable-1.3.0.0
Building     hashable-1.3.0.0
Completed    cabal-doctest-1.0.8
Starting     semigroups-0.19.1
Building     semigroups-0.19.1
Completed    exceptions-0.10.4
Starting     tagged-0.8.6
Completed    base-orphans-0.8.2
Starting     th-abstraction-0.3.1.0
Completed    semigroups-0.19.1
Starting     transformers-compat-0.6.5
Building     tagged-0.8.6
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
Starting     transformers-base-0.4.5.2
Completed    contravariant-1.5.2
Building     transformers-base-0.4.5.2
Building     distributive-0.6.1
Completed    transformers-base-0.4.5.2
Completed    distributive-0.6.1
Starting     comonad-5.0.6
Building     comonad-5.0.6
Completed    unordered-containers-0.2.10.0
Completed    comonad-5.0.6
Starting     bifunctors-5.5.7
Building     bifunctors-5.5.7
Completed    bifunctors-5.5.7
Starting     semigroupoids-5.3.4
Starting     profunctors-5.5.1
Building     profunctors-5.5.1
Building     semigroupoids-5.3.4
Completed    profunctors-5.5.1
Completed    semigroupoids-5.3.4
Starting     free-5.1.3
Building     free-5.1.3
Completed    free-5.1.3
Downloading  keys-3.12.3
Downloaded   keys-3.12.3
Starting     keys-3.12.3
Building     keys-3.12.3
Completed    keys-3.12.3