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     StateVar-1.2
Starting     base-orphans-0.8.1
Starting     colour-2.3.5
Building     base-orphans-0.8.1
Building     colour-2.3.5
Building     StateVar-1.2
Building     cabal-doctest-1.0.8
Completed    base-orphans-0.8.1
Starting     lens-family-core-2.0.0
Completed    StateVar-1.2
Starting     primitive-0.7.0.0
Building     lens-family-core-2.0.0
Building     primitive-0.7.0.0
Completed    cabal-doctest-1.0.8
Starting     tagged-0.8.6
Building     tagged-0.8.6
Completed    lens-family-core-2.0.0
Starting     th-abstraction-0.3.1.0
Completed    tagged-0.8.6
Starting     transformers-compat-0.6.5
Building     th-abstraction-0.3.1.0
Completed    colour-2.3.5
Starting     contravariant-1.5.2
Building     transformers-compat-0.6.5
Building     contravariant-1.5.2
Completed    transformers-compat-0.6.5
Starting     lens-family-2.0.0
Completed    contravariant-1.5.2
Starting     distributive-0.6.1
Building     lens-family-2.0.0
Completed    th-abstraction-0.3.1.0
Starting     ansi-terminal-0.10.1
Building     ansi-terminal-0.10.1
Building     distributive-0.6.1
Completed    lens-family-2.0.0
Completed    primitive-0.7.0.0
Starting     vector-0.12.0.3
Building     vector-0.12.0.3
Completed    ansi-terminal-0.10.1
Starting     ansi-wl-pprint-0.6.9
Completed    distributive-0.6.1
Starting     comonad-5.0.5
Building     ansi-wl-pprint-0.6.9
Building     comonad-5.0.5
Completed    ansi-wl-pprint-0.6.9
Starting     optparse-applicative-0.15.1.0
Building     optparse-applicative-0.15.1.0
Completed    comonad-5.0.5
Starting     bifunctors-5.5.5
Building     bifunctors-5.5.5
Completed    optparse-applicative-0.15.1.0
Completed    bifunctors-5.5.5
Starting     profunctors-5.5
Building     profunctors-5.5
Completed    profunctors-5.5
Completed    vector-0.12.0.3
Downloading  proto-lens-0.6.0.0
Downloaded   proto-lens-0.6.0.0
Starting     proto-lens-0.6.0.0
Building     proto-lens-0.6.0.0
Completed    proto-lens-0.6.0.0
Downloading  proto-lens-optparse-0.1.1.6
Downloaded   proto-lens-optparse-0.1.1.6
Starting     proto-lens-optparse-0.1.1.6
Building     proto-lens-optparse-0.1.1.6
Completed    proto-lens-optparse-0.1.1.6