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-1.0.6
Starting     data-default-class-0.1.2.0
Starting     entropy-0.4.1.4
Starting     primitive-0.7.0.0
Building     data-default-class-0.1.2.0
Building     cabal-doctest-1.0.6
Building     primitive-0.7.0.0
Completed    data-default-class-0.1.2.0
Starting     random-1.1
Building     random-1.1
Building     entropy-0.4.1.4
Completed    cabal-doctest-1.0.6
Completed    entropy-0.4.1.4
Completed    random-1.1
Completed    primitive-0.7.0.0
Downloading  pcg-random-0.1.3.6
Starting     vector-0.12.0.3
Downloaded   pcg-random-0.1.3.6
Starting     pcg-random-0.1.3.6
Building     vector-0.12.0.3
Building     pcg-random-0.1.3.6
Completed    pcg-random-0.1.3.6
Completed    vector-0.12.0.3
Starting     vector-th-unbox-0.2.1.6
Building     vector-th-unbox-0.2.1.6
Completed    vector-th-unbox-0.2.1.6
Starting     math-functions-0.3.1.0
Building     math-functions-0.3.1.0
Completed    math-functions-0.3.1.0
Starting     mwc-random-0.14.0.0
Building     mwc-random-0.14.0.0
Completed    mwc-random-0.14.0.0
Downloading  random-bytestring-0.1.3.2
Downloaded   random-bytestring-0.1.3.2
Starting     random-bytestring-0.1.3.2
Building     random-bytestring-0.1.3.2
Completed    random-bytestring-0.1.3.2