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...
Warning: The following packages are likely to be broken by the reinstalls:
parsec-3.1.13.0
Cabal-2.4.0.1
Continuing even though the plan contains dangerous reinstalls.
Starting     cabal-doctest-1.0.8
Starting     call-stack-0.2.0
Starting     base-orphans-0.8.2
Starting     base-compat-0.11.1
Building     call-stack-0.2.0
Building     base-orphans-0.8.2
Building     cabal-doctest-1.0.8
Building     base-compat-0.11.1
Completed    call-stack-0.2.0
Starting     dlist-0.8.0.7
Building     dlist-0.8.0.7
Completed    cabal-doctest-1.0.8
Starting     hashable-1.3.0.0
Building     hashable-1.3.0.0
Completed    base-orphans-0.8.2
Starting     integer-logarithms-1.0.3
Completed    dlist-0.8.0.7
Starting     newtype-0.2.2.0
Building     integer-logarithms-1.0.3
Building     newtype-0.2.2.0
Completed    newtype-0.2.2.0
Starting     parallel-3.2.2.0
Completed    integer-logarithms-1.0.3
Starting     random-1.1
Completed    hashable-1.3.0.0
Starting     reflection-2.1.5
Building     parallel-3.2.2.0
Building     random-1.1
Building     reflection-2.1.5
Completed    base-compat-0.11.1
Starting     semigroups-0.19.1
Building     semigroups-0.19.1
Completed    semigroups-0.19.1
Starting     th-abstraction-0.3.1.0
Completed    parallel-3.2.2.0
Starting     transformers-0.5.6.2
Building     th-abstraction-0.3.1.0
Building     transformers-0.5.6.2
Completed    random-1.1
Starting     type-equality-1
Building     type-equality-1
Completed    type-equality-1
Starting     void-0.7.3
Building     void-0.7.3
Completed    reflection-2.1.5
Starting     time-compat-1.9.2.2
Building     time-compat-1.9.2.2
Completed    void-0.7.3
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    th-abstraction-0.3.1.0
Starting     uuid-types-1.0.3
Building     uuid-types-1.0.3
Completed    time-compat-1.9.2.2
Starting     splitmix-0.0.3
Building     splitmix-0.0.3
Completed    uuid-types-1.0.3
Completed    splitmix-0.0.3
Completed    transformers-0.5.6.2
Starting     tagged-0.8.6
Starting     transformers-compat-0.6.5
Starting     primitive-0.7.0.0
Building     tagged-0.8.6
Building     transformers-compat-0.6.5
Building     primitive-0.7.0.0
Completed    unordered-containers-0.2.10.0
Starting     mtl-2.2.2
Building     mtl-2.2.2
Completed    tagged-0.8.6
Starting     StateVar-1.2
Completed    transformers-compat-0.6.5
Starting     QuickCheck-2.13.2
Building     StateVar-1.2
Building     QuickCheck-2.13.2
Completed    mtl-2.2.2
Starting     distributive-0.6.1
Completed    StateVar-1.2
Starting     transformers-base-0.4.5.2
Building     transformers-base-0.4.5.2
Completed    transformers-base-0.4.5.2
Starting     exceptions-0.10.4
Building     distributive-0.6.1
Building     exceptions-0.10.4
Completed    distributive-0.6.1
Starting     constraints-0.11.2
Building     constraints-0.11.2
Completed    primitive-0.7.0.0
Starting     contravariant-1.5.2
Completed    exceptions-0.10.4
Starting     comonad-5.0.6
Building     contravariant-1.5.2
Building     comonad-5.0.6
Completed    contravariant-1.5.2
Starting     vector-0.12.1.2
Building     vector-0.12.1.2
Completed    constraints-0.11.2
Starting     scientific-0.3.6.2
Building     scientific-0.3.6.2
Completed    comonad-5.0.6
Starting     bifunctors-5.5.7
Building     bifunctors-5.5.7
Completed    scientific-0.3.6.2
Starting     attoparsec-0.13.2.3
Completed    QuickCheck-2.13.2
Building     attoparsec-0.13.2.3
Completed    bifunctors-5.5.7
Starting     profunctors-5.5.1
Starting     semigroupoids-5.3.4
Building     profunctors-5.5.1
Completed    attoparsec-0.13.2.3
Starting     assoc-1.0.1
Building     assoc-1.0.1
Building     semigroupoids-5.3.4
Completed    assoc-1.0.1
Completed    profunctors-5.5.1
Starting     invariant-0.5.3
Building     invariant-0.5.3
Completed    semigroupoids-5.3.4
Starting     free-5.1.3
Building     free-5.1.3
Completed    invariant-0.5.3
Completed    vector-0.12.1.2
Starting     witherable-0.3.1
Starting     aeson-1.4.6.0
Building     witherable-0.3.1
Building     aeson-1.4.6.0
Completed    witherable-0.3.1
Completed    free-5.1.3
Starting     adjunctions-4.4
Building     adjunctions-4.4
Completed    adjunctions-4.4
Starting     kan-extensions-5.2
Building     kan-extensions-5.2
Completed    kan-extensions-5.2
Starting     lens-4.19
Building     lens-4.19
Completed    aeson-1.4.6.0
Starting     these-1.0.1
Starting     constraints-extras-0.3.0.2
Building     these-1.0.1
Building     constraints-extras-0.3.0.2
Completed    constraints-extras-0.3.0.2
Starting     dependent-sum-0.6.2.0
Building     dependent-sum-0.6.2.0
Completed    these-1.0.1
Starting     semialign-1.1
Building     semialign-1.1
Completed    dependent-sum-0.6.2.0
Starting     dependent-map-0.3
Building     dependent-map-0.3
Completed    semialign-1.1
Completed    dependent-map-0.3
Completed    lens-4.19
Starting     monoidal-containers-0.6.0.1
Building     monoidal-containers-0.6.0.1
Completed    monoidal-containers-0.6.0.1
Downloading  patch-0.0.3.1
Downloaded   patch-0.0.3.1
Starting     patch-0.0.3.1
Building     patch-0.0.3.1
Completed    patch-0.0.3.1