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     dlist-0.8.0.5
Starting     integer-logarithms-1.0.2.2
Starting     containers-0.5.11.0
Starting     base-compat-0.10.5
Building     integer-logarithms-1.0.2.2
Building     dlist-0.8.0.5
Building     containers-0.5.11.0
Building     base-compat-0.10.5
Completed    integer-logarithms-1.0.2.2
Starting     primitive-0.6.4.0
Building     primitive-0.6.4.0
Completed    dlist-0.8.0.5
Starting     random-1.1
Building     random-1.1
Completed    base-compat-0.10.5
Starting     tagged-0.8.6
Completed    random-1.1
Starting     time-locale-compat-0.1.1.5
Building     tagged-0.8.6
Building     time-locale-compat-0.1.1.5
Completed    time-locale-compat-0.1.1.5
Starting     utf8-string-1.0.1.1
Building     utf8-string-1.0.1.1
Completed    tagged-0.8.6
Completed    utf8-string-1.0.1.1
Completed    primitive-0.6.4.0
Starting     vector-0.12.0.2
Building     vector-0.12.0.2
Completed    containers-0.5.11.0
Starting     th-abstraction-0.2.10.0
Starting     binary-0.8.6.0
Building     th-abstraction-0.2.10.0
Building     binary-0.8.6.0
Completed    th-abstraction-0.2.10.0
Completed    vector-0.12.0.2
Completed    binary-0.8.6.0
Starting     text-1.2.3.1
Building     text-1.2.3.1
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     uuid-types-1.0.3
Starting     scientific-0.3.6.2
Starting     unordered-containers-0.2.10.0
Building     scientific-0.3.6.2
Building     uuid-types-1.0.3
Building     unordered-containers-0.2.10.0
Completed    parsec-3.1.13.0
Starting     case-insensitive-1.2.0.11
Completed    uuid-types-1.0.3
Starting     network-uri-2.6.1.0
Building     case-insensitive-1.2.0.11
Building     network-uri-2.6.1.0
Completed    scientific-0.3.6.2
Starting     attoparsec-0.13.2.2
Building     attoparsec-0.13.2.2
Completed    case-insensitive-1.2.0.11
Starting     http-types-0.12.2
Building     http-types-0.12.2
Completed    network-uri-2.6.1.0
Starting     http-media-0.7.1.3
Building     http-media-0.7.1.3
Completed    http-types-0.12.2
Completed    unordered-containers-0.2.10.0
Completed    http-media-0.7.1.3
Completed    attoparsec-0.13.2.2
Starting     aeson-1.4.2.0
Building     aeson-1.4.2.0
Completed    aeson-1.4.2.0
Starting     network-uri-json-0.3.0.0
Building     network-uri-json-0.3.0.0
Completed    network-uri-json-0.3.0.0
Downloading  siren-json-0.3.1.1
Downloaded   siren-json-0.3.1.1
Starting     siren-json-0.3.1.1
Building     siren-json-0.3.1.1
Completed    siren-json-0.3.1.1