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 semigroups-0.19.1 Starting unliftio-core-0.1.2.0 Starting mmap-0.5.9 Starting primitive-0.7.0.0 Building unliftio-core-0.1.2.0 Building semigroups-0.19.1 Building mmap-0.5.9 Building primitive-0.7.0.0 Completed semigroups-0.19.1 Completed unliftio-core-0.1.2.0 Completed mmap-0.5.9 Completed primitive-0.7.0.0 Starting vector-0.12.0.3 Building vector-0.12.0.3 Completed vector-0.12.0.3 Downloading hw-prim-0.6.2.38 Downloaded hw-prim-0.6.2.38 Starting hw-prim-0.6.2.38 Building hw-prim-0.6.2.38 Completed hw-prim-0.6.2.38