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     colour-2.3.4
Building     colour-2.3.4
Building     hashable-1.2.7.0
Completed    hashable-1.2.7.0
Starting     terminal-size-0.3.2.1
Building     terminal-size-0.3.2.1
Completed    colour-2.3.4
Starting     transformers-compat-0.6.2
Completed    terminal-size-0.3.2.1
Starting     async-2.2.1
Building     transformers-compat-0.6.2
Building     async-2.2.1
Completed    async-2.2.1
Starting     ansi-terminal-0.8.2
Completed    transformers-compat-0.6.2
Starting     exceptions-0.10.0
Building     ansi-terminal-0.8.2
Building     exceptions-0.10.0
Completed    ansi-terminal-0.8.2
Completed    exceptions-0.10.0
Downloading  concurrent-output-1.10.8
Downloaded   concurrent-output-1.10.8
Starting     concurrent-output-1.10.8
Building     concurrent-output-1.10.8
Completed    concurrent-output-1.10.8