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     syb-0.7.1
Building     syb-0.7.1
Completed    syb-0.7.1
Starting     th-extras-0.0.0.4
Building     th-extras-0.0.0.4
Completed    th-extras-0.0.0.4
Downloading  flexible-defaults-0.0.3
Downloaded   flexible-defaults-0.0.3
Starting     flexible-defaults-0.0.3
Building     flexible-defaults-0.0.3
Completed    flexible-defaults-0.0.3