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     Only-0.1
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Building     base-orphans-0.8.2
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Completed    Only-0.1
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Building     dlist-0.8.0.7
Completed    base-orphans-0.8.2
Starting     envy-2.0.0.0
Building     envy-2.0.0.0
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Starting     hashable-1.3.0.0
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Starting     integer-logarithms-1.0.3
Building     hashable-1.3.0.0
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Starting     monad-skeleton-0.1.5
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Starting     primitive-0.7.0.0
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Completed    hashable-1.3.0.0
Starting     random-1.1
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Starting     semigroups-0.19.1
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Building     semigroups-0.19.1
Completed    semigroups-0.19.1
Starting     tagged-0.8.6
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Starting     th-abstraction-0.3.1.0
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Starting     transformers-compat-0.6.5
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Starting     type-equality-1
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Starting     contravariant-1.5.2
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Building     time-compat-1.9.2.2
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Completed    contravariant-1.5.2
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Starting     splitmix-0.0.3
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Starting     distributive-0.6.1
Completed    text-short-0.1.3
Starting     th-lift-0.8.1
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Starting     constraints-0.11.2
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Starting     vector-0.12.1.2
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Starting     comonad-5.0.6
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Starting     attoparsec-0.13.2.3
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Building     comonad-5.0.6
Completed    comonad-5.0.6
Starting     membership-0
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Starting     bifunctors-5.5.7
Building     bifunctors-5.5.7
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Completed    QuickCheck-2.13.2
Completed    bifunctors-5.5.7
Starting     profunctors-5.5.1
Building     profunctors-5.5.1
Completed    vector-0.12.1.2
Starting     cassava-0.5.2.0
Starting     aeson-1.4.6.0
Building     cassava-0.5.2.0
Building     aeson-1.4.6.0
Completed    profunctors-5.5.1
Completed    cassava-0.5.2.0
Completed    aeson-1.4.6.0
Starting     extensible-0.7
Building     extensible-0.7
Completed    extensible-0.7
Downloading  envy-extensible-0.2.0.0
Downloaded   envy-extensible-0.2.0.0
Starting     envy-extensible-0.2.0.0
Building     envy-extensible-0.2.0.0
Completed    envy-extensible-0.2.0.0