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     random-1.1
Starting     sop-core-0.4.0.0
Building     random-1.1
Building     sop-core-0.4.0.0
Completed    random-1.1
Starting     splitmix-0.0.2
Building     splitmix-0.0.2
Completed    splitmix-0.0.2
Starting     QuickCheck-2.13.1
Building     QuickCheck-2.13.1
Completed    sop-core-0.4.0.0
Starting     generics-sop-0.4.0.1
Building     generics-sop-0.4.0.1
Completed    QuickCheck-2.13.1
Completed    generics-sop-0.4.0.1
Downloading  basic-sop-0.2.0.3
Downloaded   basic-sop-0.2.0.3
Starting     basic-sop-0.2.0.3
Building     basic-sop-0.2.0.3
Completed    basic-sop-0.2.0.3