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     cryptohash-md5-0.11.100.1
Starting     data-binary-ieee754-0.4.4
Starting     network-2.8.0.1
Building     cryptohash-md5-0.11.100.1
Building     data-binary-ieee754-0.4.4
Completed    data-binary-ieee754-0.4.4
Completed    cryptohash-md5-0.11.100.1
Building     network-2.8.0.1
Completed    network-2.8.0.1
Downloading  bson-0.3.2.8
Downloaded   bson-0.3.2.8
Starting     bson-0.3.2.8
Building     bson-0.3.2.8
Completed    bson-0.3.2.8