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     lens-family-th-0.5.0.2
Starting     lens-family-core-1.2.3
Building     lens-family-core-1.2.3
Building     lens-family-th-0.5.0.2
Completed    lens-family-th-0.5.0.2
Completed    lens-family-core-1.2.3
Starting     lens-family-1.2.3
Building     lens-family-1.2.3
Completed    lens-family-1.2.3
Starting     lens-simple-0.1.0.9
Building     lens-simple-0.1.0.9
Completed    lens-simple-0.1.0.9
Downloading  rainbow-0.32.0.0
Downloaded   rainbow-0.32.0.0
Starting     rainbow-0.32.0.0
Building     rainbow-0.32.0.0
Completed    rainbow-0.32.0.0