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     clock-0.8
Starting     base-orphans-0.8.2
Starting     StateVar-1.2
Building     clock-0.8
Building     cabal-doctest-1.0.8
Building     StateVar-1.2
Building     base-orphans-0.8.2
Completed    StateVar-1.2
Starting     exceptions-0.10.4
Completed    clock-0.8
Starting     hashable-1.3.0.0
Building     exceptions-0.10.4
Building     hashable-1.3.0.0
Completed    cabal-doctest-1.0.8
Starting     microlens-0.4.11.2
Building     microlens-0.4.11.2
Completed    base-orphans-0.8.2
Starting     semigroups-0.19.1
Building     semigroups-0.19.1
Completed    hashable-1.3.0.0
Starting     tagged-0.8.6
Completed    semigroups-0.19.1
Starting     th-abstraction-0.3.2.0
Completed    exceptions-0.10.4
Starting     transformers-compat-0.6.5
Completed    microlens-0.4.11.2
Starting     unsafe-0.0
Building     tagged-0.8.6
Building     th-abstraction-0.3.2.0
Building     transformers-compat-0.6.5
Building     unsafe-0.0
Completed    unsafe-0.0
Starting     void-0.7.3
Building     void-0.7.3
Completed    void-0.7.3
Starting     contravariant-1.5.2
Completed    tagged-0.8.6
Starting     unordered-containers-0.2.10.0
Completed    transformers-compat-0.6.5
Starting     extra-1.7.1
Building     contravariant-1.5.2
Building     unordered-containers-0.2.10.0
Building     extra-1.7.1
Completed    th-abstraction-0.3.2.0
Starting     distributive-0.6.2
Completed    contravariant-1.5.2
Starting     transformers-base-0.4.5.2
Building     transformers-base-0.4.5.2
Building     distributive-0.6.2
Completed    transformers-base-0.4.5.2
Starting     microlens-th-0.4.3.4
Completed    extra-1.7.1
Starting     monad-control-1.0.2.3
Building     microlens-th-0.4.3.4
Building     monad-control-1.0.2.3
Completed    distributive-0.6.2
Starting     comonad-5.0.6
Completed    monad-control-1.0.2.3
Starting     multistate-0.8.0.2
Building     multistate-0.8.0.2
Building     comonad-5.0.6
Completed    microlens-th-0.4.3.4
Completed    unordered-containers-0.2.10.0
Completed    comonad-5.0.6
Starting     bifunctors-5.5.7
Building     bifunctors-5.5.7
Completed    multistate-0.8.0.2
Completed    bifunctors-5.5.7
Starting     semigroupoids-5.3.4
Starting     profunctors-5.5.2
Building     profunctors-5.5.2
Building     semigroupoids-5.3.4
Completed    profunctors-5.5.2
Completed    semigroupoids-5.3.4
Starting     strict-list-0.1.5
Starting     free-5.1.3
Building     strict-list-0.1.5
Building     free-5.1.3
Completed    strict-list-0.1.5
Starting     deque-0.4.3
Building     deque-0.4.3
Completed    deque-0.4.3
Completed    free-5.1.3
Downloading  butcher-1.3.3.1
Downloaded   butcher-1.3.3.1
Starting     butcher-1.3.3.1
Building     butcher-1.3.3.1
Completed    butcher-1.3.3.1