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     indexed-profunctors-0.1
Starting     base-orphans-0.8.2
Building     StateVar-1.2
Building     indexed-profunctors-0.1
Building     cabal-doctest-1.0.8
Building     base-orphans-0.8.2
Completed    StateVar-1.2
Starting     tagged-0.8.6
Building     tagged-0.8.6
Completed    cabal-doctest-1.0.8
Starting     th-abstraction-0.3.2.0
Building     th-abstraction-0.3.2.0
Completed    indexed-profunctors-0.1
Starting     transformers-compat-0.6.5
Completed    base-orphans-0.8.2
Starting     contravariant-1.5.2
Building     transformers-compat-0.6.5
Building     contravariant-1.5.2
Completed    tagged-0.8.6
Downloading  optics-core-0.3
Downloaded   optics-core-0.3
Starting     optics-core-0.3
Building     optics-core-0.3
Completed    transformers-compat-0.6.5
Starting     distributive-0.6.2
Completed    th-abstraction-0.3.2.0
Completed    contravariant-1.5.2
Building     distributive-0.6.2
Completed    distributive-0.6.2
Starting     comonad-5.0.6
Building     comonad-5.0.6
Completed    comonad-5.0.6
Starting     bifunctors-5.5.7
Building     bifunctors-5.5.7
Completed    optics-core-0.3
Completed    bifunctors-5.5.7
Starting     profunctors-5.5.2
Building     profunctors-5.5.2
Completed    profunctors-5.5.2
Downloading  optics-vl-0.2.1
Downloaded   optics-vl-0.2.1
Starting     optics-vl-0.2.1
Building     optics-vl-0.2.1
Completed    optics-vl-0.2.1