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-0.8.2
Starting     base-compat-0.11.1
Building     StateVar-1.2
Building     base-orphans-0.8.2
Building     cabal-doctest-1.0.8
Building     base-compat-0.11.1
Completed    StateVar-1.2
Starting     dlist-0.8.0.7
Building     dlist-0.8.0.7
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Starting     exceptions-0.10.4
Building     exceptions-0.10.4
Completed    base-orphans-0.8.2
Starting     hashable-1.3.0.0
Completed    dlist-0.8.0.7
Starting     integer-logarithms-1.0.3
Building     hashable-1.3.0.0
Building     integer-logarithms-1.0.3
Completed    integer-logarithms-1.0.3
Starting     microlens-0.4.11.2
Completed    exceptions-0.10.4
Starting     primitive-0.7.0.0
Building     microlens-0.4.11.2
Completed    base-compat-0.11.1
Starting     random-1.1
Building     primitive-0.7.0.0
Building     random-1.1
Completed    hashable-1.3.0.0
Starting     split-0.2.3.3
Building     split-0.2.3.3
Completed    microlens-0.4.11.2
Starting     tagged-0.8.6
Completed    split-0.2.3.3
Starting     th-abstraction-0.3.1.0
Building     tagged-0.8.6
Building     th-abstraction-0.3.1.0
Completed    random-1.1
Starting     transformers-compat-0.6.5
Building     transformers-compat-0.6.5
Completed    tagged-0.8.6
Starting     unliftio-core-0.1.2.0
Building     unliftio-core-0.1.2.0
Completed    transformers-compat-0.6.5
Starting     contravariant-1.5.2
Building     contravariant-1.5.2
Completed    th-abstraction-0.3.1.0
Starting     time-compat-1.9.2.2
Completed    unliftio-core-0.1.2.0
Starting     vformat-0.14.1.0
Building     time-compat-1.9.2.2
Building     vformat-0.14.1.0
Completed    contravariant-1.5.2
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    primitive-0.7.0.0
Starting     uuid-types-1.0.3
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Starting     distributive-0.6.1
Completed    vformat-0.14.1.0
Starting     vector-0.12.1.2
Building     vector-0.12.1.2
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Completed    uuid-types-1.0.3
Starting     scientific-0.3.6.2
Building     scientific-0.3.6.2
Completed    distributive-0.6.1
Starting     resourcet-1.2.2
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Completed    scientific-0.3.6.2
Starting     vformat-time-0.1.0.0
Completed    unordered-containers-0.2.10.0
Starting     comonad-5.0.6
Building     vformat-time-0.1.0.0
Completed    vformat-time-0.1.0.0
Starting     attoparsec-0.13.2.3
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Starting     bifunctors-5.5.7
Building     bifunctors-5.5.7
Completed    attoparsec-0.13.2.3
Completed    bifunctors-5.5.7
Starting     profunctors-5.5.1
Building     profunctors-5.5.1
Completed    vector-0.12.1.2
Starting     vector-algorithms-0.8.0.3
Starting     aeson-1.4.6.0
Building     vector-algorithms-0.8.0.3
Building     aeson-1.4.6.0
Completed    profunctors-5.5.1
Starting     generic-lens-1.2.0.1
Building     generic-lens-1.2.0.1
Completed    vector-algorithms-0.8.0.3
Starting     mono-traversable-1.0.15.1
Building     mono-traversable-1.0.15.1
Completed    generic-lens-1.2.0.1
Completed    mono-traversable-1.0.15.1
Starting     conduit-1.3.1.2
Completed    aeson-1.4.6.0
Starting     vformat-aeson-0.1.0.1
Starting     aeson-default-0.9.1.0
Building     conduit-1.3.1.2
Building     vformat-aeson-0.1.0.1
Building     aeson-default-0.9.1.0
Completed    vformat-aeson-0.1.0.1
Completed    aeson-default-0.9.1.0
Completed    conduit-1.3.1.2
Starting     libyaml-0.1.1.1
Building     libyaml-0.1.1.1
Completed    libyaml-0.1.1.1
Starting     yaml-0.11.2.0
Building     yaml-0.11.2.0
Completed    yaml-0.11.2.0
Downloading  log4hs-0.9.0.0
Downloaded   log4hs-0.9.0.0
Starting     log4hs-0.9.0.0
Building     log4hs-0.9.0.0
Completed    log4hs-0.9.0.0