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     loop-0.3.0
Starting     semigroups-0.19.1
Starting     ghc-tcplugins-extra-0.3
Starting     primitive-0.7.0.0
Building     loop-0.3.0
Building     semigroups-0.19.1
Building     ghc-tcplugins-extra-0.3
Building     primitive-0.7.0.0
Completed    loop-0.3.0
Completed    semigroups-0.19.1
Completed    ghc-tcplugins-extra-0.3
Starting     ghc-typelits-natnormalise-0.7
Building     ghc-typelits-natnormalise-0.7
Completed    ghc-typelits-natnormalise-0.7
Completed    primitive-0.7.0.0
Starting     vector-0.12.0.3
Building     vector-0.12.0.3
Completed    vector-0.12.0.3
Starting     matrix-0.3.6.1
Building     matrix-0.3.6.1
Completed    matrix-0.3.6.1
Downloading  matrix-static-0.2.1
Downloaded   matrix-static-0.2.1
Starting     matrix-static-0.2.1
Building     matrix-static-0.2.1
Completed    matrix-static-0.2.1