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     Only-0.1
Starting     colour-2.3.5
Starting     base-orphans-0.8.1
Starting     base-compat-0.11.0
Building     Only-0.1
Building     colour-2.3.5
Building     base-orphans-0.8.1
Building     base-compat-0.11.0
Completed    base-orphans-0.8.1
Starting     dlist-0.8.0.7
Completed    Only-0.1
Starting     extensible-exceptions-0.1.1.4
Building     dlist-0.8.0.7
Building     extensible-exceptions-0.1.1.4
Completed    extensible-exceptions-0.1.1.4
Starting     file-embed-0.0.11
Building     file-embed-0.0.11
Completed    dlist-0.8.0.7
Starting     hashable-1.3.0.0
Building     hashable-1.3.0.0
Completed    file-embed-0.0.11
Starting     integer-logarithms-1.0.3
Completed    colour-2.3.5
Starting     parser-combinators-1.2.0
Building     integer-logarithms-1.0.3
Building     parser-combinators-1.2.0
Completed    base-compat-0.11.0
Starting     process-1.6.6.0
Completed    hashable-1.3.0.0
Starting     random-1.1
Completed    integer-logarithms-1.0.3
Starting     split-0.2.3.3
Building     random-1.1
Building     split-0.2.3.3
Building     process-1.6.6.0
Completed    parser-combinators-1.2.0
Starting     stm-chans-3.0.0.4
Completed    split-0.2.3.3
Starting     th-abstraction-0.3.1.0
Building     th-abstraction-0.3.1.0
Completed    random-1.1
Starting     transformers-0.5.6.2
Building     stm-chans-3.0.0.4
Building     transformers-0.5.6.2
Completed    process-1.6.6.0
Starting     time-compat-1.9.2.2
Building     time-compat-1.9.2.2
Completed    stm-chans-3.0.0.4
Starting     ansi-terminal-0.9.1
Building     ansi-terminal-0.9.1
Completed    th-abstraction-0.3.1.0
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    time-compat-1.9.2.2
Starting     text-short-0.1.3
Building     text-short-0.1.3
Completed    ansi-terminal-0.9.1
Starting     case-insensitive-1.2.1.0
Building     case-insensitive-1.2.1.0
Completed    case-insensitive-1.2.1.0
Starting     uuid-types-1.0.3
Building     uuid-types-1.0.3
Completed    text-short-0.1.3
Starting     parallel-io-0.3.3
Building     parallel-io-0.3.3
Completed    transformers-0.5.6.2
Downloading  terminal-progress-bar-0.1.1.1
Downloaded   terminal-progress-bar-0.1.1.1
Starting     terminal-progress-bar-0.1.1.1
Building     terminal-progress-bar-0.1.1.1
Completed    uuid-types-1.0.3
Starting     ansi-wl-pprint-0.6.9
Completed    unordered-containers-0.2.10.0
Starting     unliftio-core-0.1.2.0
Completed    parallel-io-0.3.3
Starting     transformers-compat-0.6.5
Building     ansi-wl-pprint-0.6.9
Building     unliftio-core-0.1.2.0
Building     transformers-compat-0.6.5
Completed    terminal-progress-bar-0.1.1.1
Starting     tagged-0.8.6
Building     tagged-0.8.6
Completed    unliftio-core-0.1.2.0
Starting     primitive-0.7.0.0
Building     primitive-0.7.0.0
Completed    ansi-wl-pprint-0.6.9
Starting     mtl-2.2.2
Building     mtl-2.2.2
Completed    transformers-compat-0.6.5
Starting     optparse-applicative-0.14.3.0
Completed    tagged-0.8.6
Building     optparse-applicative-0.14.3.0
Completed    mtl-2.2.2
Starting     regex-base-0.93.2
Starting     parsec-3.1.14.0
Building     regex-base-0.93.2
Building     parsec-3.1.14.0
Completed    regex-base-0.93.2
Starting     exceptions-0.10.3
Building     exceptions-0.10.3
Completed    optparse-applicative-0.14.3.0
Completed    primitive-0.7.0.0
Starting     scientific-0.3.6.2
Starting     vector-0.12.0.3
Completed    parsec-3.1.14.0
Starting     regex-tdfa-1.2.3.2
Completed    exceptions-0.10.3
Starting     resourcet-1.2.2
Building     scientific-0.3.6.2
Building     vector-0.12.0.3
Building     regex-tdfa-1.2.3.2
Building     resourcet-1.2.2
Completed    scientific-0.3.6.2
Starting     megaparsec-7.0.5
Completed    resourcet-1.2.2
Starting     attoparsec-0.13.2.3
Building     megaparsec-7.0.5
Building     attoparsec-0.13.2.3
Completed    attoparsec-0.13.2.3
Completed    regex-tdfa-1.2.3.2
Completed    megaparsec-7.0.5
Starting     inflections-0.4.0.4
Building     inflections-0.4.0.4
Completed    inflections-0.4.0.4
Completed    vector-0.12.0.3
Starting     vector-algorithms-0.8.0.1
Starting     cassava-0.5.2.0
Starting     aeson-1.4.5.0
Building     cassava-0.5.2.0
Building     vector-algorithms-0.8.0.1
Building     aeson-1.4.5.0
Completed    cassava-0.5.2.0
Completed    vector-algorithms-0.8.0.1
Starting     mono-traversable-1.0.13.0
Building     mono-traversable-1.0.13.0
Completed    aeson-1.4.5.0
Completed    mono-traversable-1.0.13.0
Starting     conduit-1.3.1.1
Building     conduit-1.3.1.1
Completed    conduit-1.3.1.1
Starting     libyaml-0.1.1.0
Building     libyaml-0.1.1.0
Completed    libyaml-0.1.1.0
Starting     yaml-0.11.1.2
Building     yaml-0.11.1.2
Completed    yaml-0.11.1.2
Downloading  unused-0.10.0.0
Downloaded   unused-0.10.0.0
Starting     unused-0.10.0.0
Building     unused-0.10.0.0
Completed    unused-0.10.0.0