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     haskell-lexer-1.0.2
Starting     colour-2.3.4
Building     haskell-lexer-1.0.2
Building     colour-2.3.4
Completed    colour-2.3.4
Starting     ansi-terminal-0.8.2
Building     ansi-terminal-0.8.2
Completed    ansi-terminal-0.8.2
Starting     ansi-wl-pprint-0.6.8.2
Building     ansi-wl-pprint-0.6.8.2
Completed    ansi-wl-pprint-0.6.8.2
Completed    haskell-lexer-1.0.2
Downloading  pretty-show-ansi-wl-1.9.2.1
Downloaded   pretty-show-ansi-wl-1.9.2.1
Starting     pretty-show-ansi-wl-1.9.2.1
Building     pretty-show-ansi-wl-1.9.2.1
Completed    pretty-show-ansi-wl-1.9.2.1