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 either-both-0.1.1.1 Starting filtrable-0.1.2.0 Starting util-0.1.13.0 Building either-both-0.1.1.1 Building filtrable-0.1.2.0 Building util-0.1.13.0 Completed either-both-0.1.1.1 Completed filtrable-0.1.2.0 Completed util-0.1.13.0 Downloading Map-0.1.0.0 Downloaded Map-0.1.0.0 Starting Map-0.1.0.0 Building Map-0.1.0.0 Completed Map-0.1.0.0