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     validity-0.9.0.3
Building     validity-0.9.0.3
Completed    validity-0.9.0.3
Starting     validity-time-0.3.0.0
Building     validity-time-0.3.0.0
Completed    validity-time-0.3.0.0
Downloading  pretty-relative-time-0.2.0.0
Downloaded   pretty-relative-time-0.2.0.0
Starting     pretty-relative-time-0.2.0.0
Building     pretty-relative-time-0.2.0.0
Completed    pretty-relative-time-0.2.0.0