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... Downloading fgl-5.7.0.2 Starting random-1.1 Downloaded fgl-5.7.0.2 Starting fgl-5.7.0.2 Building random-1.1 Building fgl-5.7.0.2 Completed random-1.1 Starting splitmix-0.0.3 Building splitmix-0.0.3 Completed splitmix-0.0.3 Starting QuickCheck-2.13.2 Building QuickCheck-2.13.2 Completed fgl-5.7.0.2 Completed QuickCheck-2.13.2 Downloading fgl-arbitrary-0.2.0.5 Downloaded fgl-arbitrary-0.2.0.5 Starting fgl-arbitrary-0.2.0.5 Building fgl-arbitrary-0.2.0.5 Completed fgl-arbitrary-0.2.0.5