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     call-stack-0.1.0
Starting     integer-logarithms-1.0.3
Starting     hashable-1.3.0.0
Starting     parser-combinators-1.1.0
Building     call-stack-0.1.0
Building     integer-logarithms-1.0.3
Building     parser-combinators-1.1.0
Building     hashable-1.3.0.0
Completed    call-stack-0.1.0
Starting     primitive-0.7.0.0
Completed    integer-logarithms-1.0.3
Starting     HUnit-1.6.0.0
Building     primitive-0.7.0.0
Building     HUnit-1.6.0.0
Completed    parser-combinators-1.1.0
Completed    hashable-1.3.0.0
Starting     case-insensitive-1.2.1.0
Building     case-insensitive-1.2.1.0
Completed    HUnit-1.6.0.0
Starting     hspec-expectations-0.8.2
Building     hspec-expectations-0.8.2
Completed    case-insensitive-1.2.1.0
Completed    hspec-expectations-0.8.2
Completed    primitive-0.7.0.0
Starting     scientific-0.3.6.2
Building     scientific-0.3.6.2
Completed    scientific-0.3.6.2
Starting     megaparsec-7.0.5
Building     megaparsec-7.0.5
Completed    megaparsec-7.0.5
Downloading  hspec-megaparsec-2.0.1
Downloaded   hspec-megaparsec-2.0.1
Starting     hspec-megaparsec-2.0.1
Building     hspec-megaparsec-2.0.1
Completed    hspec-megaparsec-2.0.1