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     colour-2.3.4
Building     colour-2.3.4
Completed    colour-2.3.4
Starting     ansi-terminal-0.8.2
Building     ansi-terminal-0.8.2
Completed    ansi-terminal-0.8.2
Downloading  fortytwo-1.0.5
Downloaded   fortytwo-1.0.5
Starting     fortytwo-1.0.5
Building     fortytwo-1.0.5
Completed    fortytwo-1.0.5