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:
Cabal-2.4.0.1
libiserv-8.6.3
ghci-8.6.3
ghc-8.6.3
ghc-boot-8.6.3
Continuing even though the plan contains dangerous reinstalls.
Starting     StateVar-1.1.1.1
Starting     cabal-doctest-1.0.6
Starting     base-orphans-0.8
Starting     containers-0.5.11.0
Building     StateVar-1.1.1.1
Building     cabal-doctest-1.0.6
Building     base-orphans-0.8
Building     containers-0.5.11.0
Completed    base-orphans-0.8
Starting     erf-2.0.0.0
Completed    StateVar-1.1.1.1
Starting     loop-0.3.0
Building     erf-2.0.0.0
Building     loop-0.3.0
Completed    cabal-doctest-1.0.6
Starting     nats-1.1.2
Building     nats-1.1.2
Completed    loop-0.3.0
Starting     primitive-0.6.4.0
Completed    erf-2.0.0.0
Starting     random-1.1
Completed    nats-1.1.2
Starting     semigroups-0.18.5
Building     primitive-0.6.4.0
Building     random-1.1
Building     semigroups-0.18.5
Completed    semigroups-0.18.5
Starting     tagged-0.8.6
Building     tagged-0.8.6
Completed    random-1.1
Starting     transformers-compat-0.6.2
Building     transformers-compat-0.6.2
Completed    tagged-0.8.6
Starting     utf8-string-1.0.1.1
Building     utf8-string-1.0.1.1
Completed    transformers-compat-0.6.2
Starting     contravariant-1.5
Building     contravariant-1.5
Completed    utf8-string-1.0.1.1
Starting     distributive-0.6
Completed    contravariant-1.5
Building     distributive-0.6
Completed    primitive-0.6.4.0
Starting     tf-random-0.5
Starting     vector-0.12.0.2
Building     tf-random-0.5
Building     vector-0.12.0.2
Completed    distributive-0.6
Completed    tf-random-0.5
Completed    containers-0.5.11.0
Starting     th-abstraction-0.2.10.0
Starting     comonad-5.0.4
Starting     binary-0.8.6.0
Building     th-abstraction-0.2.10.0
Building     binary-0.8.6.0
Building     comonad-5.0.4
Completed    th-abstraction-0.2.10.0
Starting     QuickCheck-2.12.6.1
Building     QuickCheck-2.12.6.1
Completed    comonad-5.0.4
Starting     bifunctors-5.5.3
Completed    binary-0.8.6.0
Starting     text-1.2.3.1
Building     bifunctors-5.5.3
Building     text-1.2.3.1
Completed    vector-0.12.0.2
Starting     matrix-0.3.6.1
Building     matrix-0.3.6.1
Completed    bifunctors-5.5.3
Completed    matrix-0.3.6.1
Completed    QuickCheck-2.12.6.1
Completed    text-1.2.3.1
Starting     hashable-1.2.7.0
Starting     parsec-3.1.13.0
Building     hashable-1.2.7.0
Building     parsec-3.1.13.0
Completed    hashable-1.2.7.0
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    parsec-3.1.13.0
Completed    unordered-containers-0.2.10.0
Starting     semigroupoids-5.3.2
Building     semigroupoids-5.3.2
Completed    semigroupoids-5.3.2
Downloading  wl-pprint-extras-3.5.0.5
Downloaded   wl-pprint-extras-3.5.0.5
Starting     wl-pprint-extras-3.5.0.5
Building     wl-pprint-extras-3.5.0.5
Completed    wl-pprint-extras-3.5.0.5
Downloading  HaTeX-3.20.0.0
Downloaded   HaTeX-3.20.0.0
Starting     HaTeX-3.20.0.0
Building     HaTeX-3.20.0.0
Completed    HaTeX-3.20.0.0