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     Only-0.1
Starting     semigroups-0.19.1
Starting     colour-2.3.5
Starting     system-filepath-0.4.14
Building     semigroups-0.19.1
Building     Only-0.1
Building     colour-2.3.5
Completed    semigroups-0.19.1
Starting     transformers-compat-0.6.5
Completed    Only-0.1
Starting     void-0.7.3
Building     transformers-compat-0.6.5
Building     system-filepath-0.4.14
Building     void-0.7.3
Completed    void-0.7.3
Completed    transformers-compat-0.6.5
Completed    system-filepath-0.4.14
Completed    colour-2.3.5
Starting     ansi-terminal-0.10.2
Building     ansi-terminal-0.10.2
Completed    ansi-terminal-0.10.2
Starting     ansi-wl-pprint-0.6.9
Building     ansi-wl-pprint-0.6.9
Completed    ansi-wl-pprint-0.6.9
Starting     optparse-applicative-0.15.1.0
Building     optparse-applicative-0.15.1.0
Completed    optparse-applicative-0.15.1.0
Downloading  optparse-generic-1.3.1
Downloaded   optparse-generic-1.3.1
Starting     optparse-generic-1.3.1
Building     optparse-generic-1.3.1
Completed    optparse-generic-1.3.1