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     base-orphans-0.8.2
Starting     colour-2.3.5
Building     StateVar-1.2
Building     colour-2.3.5
Building     base-orphans-0.8.2
Building     cabal-doctest-1.0.8
Completed    StateVar-1.2
Starting     groups-0.4.1.0
Building     groups-0.4.1.0
Completed    cabal-doctest-1.0.8
Starting     hashable-1.3.0.0
Building     hashable-1.3.0.0
Completed    groups-0.4.1.0
Starting     list-extras-0.4.1.4
Building     list-extras-0.4.1.4
Completed    base-orphans-0.8.2
Starting     random-1.1
Building     random-1.1
Completed    list-extras-0.4.1.4
Starting     syb-0.7.1
Completed    colour-2.3.5
Starting     tagged-0.8.6
Completed    hashable-1.3.0.0
Starting     th-abstraction-0.3.2.0
Building     syb-0.7.1
Building     tagged-0.8.6
Building     th-abstraction-0.3.2.0
Completed    random-1.1
Starting     transformers-compat-0.6.5
Building     transformers-compat-0.6.5
Completed    tagged-0.8.6
Starting     contravariant-1.5.2
Building     contravariant-1.5.2
Completed    syb-0.7.1
Starting     ansi-terminal-0.10.3
Building     ansi-terminal-0.10.3
Completed    transformers-compat-0.6.5
Starting     unordered-containers-0.2.10.0
Completed    th-abstraction-0.3.2.0
Starting     splitmix-0.0.4
Building     unordered-containers-0.2.10.0
Building     splitmix-0.0.4
Completed    contravariant-1.5.2
Starting     distributive-0.6.1
Completed    splitmix-0.0.4
Starting     th-expand-syns-0.4.5.0
Completed    ansi-terminal-0.10.3
Starting     QuickCheck-2.13.2
Building     th-expand-syns-0.4.5.0
Building     QuickCheck-2.13.2
Building     distributive-0.6.1
Completed    th-expand-syns-0.4.5.0
Starting     th-instance-reification-0.1.5
Building     th-instance-reification-0.1.5
Completed    distributive-0.6.1
Starting     comonad-5.0.6
Building     comonad-5.0.6
Completed    unordered-containers-0.2.10.0
Completed    th-instance-reification-0.1.5
Completed    comonad-5.0.6
Starting     bifunctors-5.5.7
Building     bifunctors-5.5.7
Completed    QuickCheck-2.13.2
Completed    bifunctors-5.5.7
Starting     semigroupoids-5.3.4
Building     semigroupoids-5.3.4
Completed    semigroupoids-5.3.4
Starting     checkers-0.5.5
Building     checkers-0.5.5
Completed    checkers-0.5.5
Downloading  algebra-checkers-0.1.0.0
Downloaded   algebra-checkers-0.1.0.0
Starting     algebra-checkers-0.1.0.0
Building     algebra-checkers-0.1.0.0
Completed    algebra-checkers-0.1.0.0