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     transformers-compat-0.6.2
Building     transformers-compat-0.6.2
Building     random-1.1
Completed    transformers-compat-0.6.2
Starting     unix-compat-0.5.1
Completed    random-1.1
Starting     exceptions-0.10.0
Building     unix-compat-0.5.1
Building     exceptions-0.10.0
Completed    unix-compat-0.5.1
Completed    exceptions-0.10.0
Starting     temporary-1.3
Building     temporary-1.3
Completed    temporary-1.3
Downloading  atomic-write-0.2.0.6
Downloaded   atomic-write-0.2.0.6
Starting     atomic-write-0.2.0.6
Building     atomic-write-0.2.0.6
Completed    atomic-write-0.2.0.6