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 base-orphans-0.8.2 Starting primitive-0.7.0.1 Starting base-compat-0.11.1 Building base-orphans-0.8.2 Building primitive-0.7.0.1 Building base-compat-0.11.1 Completed base-orphans-0.8.2 Completed base-compat-0.11.1 Completed primitive-0.7.0.1 Starting vector-0.12.1.2 Building vector-0.12.1.2 Completed vector-0.12.1.2 Downloading topograph-1.0.0.1 Downloaded topograph-1.0.0.1 Starting topograph-1.0.0.1 Building topograph-1.0.0.1 Completed topograph-1.0.0.1