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     hashable-1.2.7.0
Starting     semigroups-0.18.5
Building     semigroups-0.18.5
Building     hashable-1.2.7.0
Completed    semigroups-0.18.5
Downloading  boomerang-1.4.5.6
Downloaded   boomerang-1.4.5.6
Starting     boomerang-1.4.5.6
Building     boomerang-1.4.5.6
Completed    hashable-1.2.7.0
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    boomerang-1.4.5.6
Completed    unordered-containers-0.2.10.0
Downloading  itanium-abi-0.1.1.1
Downloaded   itanium-abi-0.1.1.1
Starting     itanium-abi-0.1.1.1
Building     itanium-abi-0.1.1.1
Completed    itanium-abi-0.1.1.1