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     microlens-0.4.11.2
Starting     reflection-2.1.5
Starting     hashable-1.3.0.0
Starting     primitive-0.7.0.0
Building     microlens-0.4.11.2
Building     reflection-2.1.5
Building     hashable-1.3.0.0
Building     primitive-0.7.0.0
Completed    microlens-0.4.11.2
Starting     split-0.2.3.4
Completed    hashable-1.3.0.0
Starting     vinyl-0.12.1
Building     split-0.2.3.4
Building     vinyl-0.12.1
Completed    reflection-2.1.5
Starting     unordered-containers-0.2.10.0
Completed    split-0.2.3.4
Building     unordered-containers-0.2.10.0
Completed    primitive-0.7.0.0
Starting     vector-0.12.1.2
Completed    vinyl-0.12.1
Building     vector-0.12.1.2
Completed    unordered-containers-0.2.10.0
Completed    vector-0.12.1.2
Starting     nonlinear-optimization-0.3.12
Starting     vector-algorithms-0.8.0.3
Starting     backprop-0.2.6.3
Building     vector-algorithms-0.8.0.3
Building     nonlinear-optimization-0.3.12
Building     backprop-0.2.6.3
Completed    nonlinear-optimization-0.3.12
Completed    vector-algorithms-0.8.0.3
Starting     mono-traversable-1.0.15.1
Building     mono-traversable-1.0.15.1
Completed    backprop-0.2.6.3
Completed    mono-traversable-1.0.15.1
Downloading  nonlinear-optimization-backprop-0.2.4
Downloaded   nonlinear-optimization-backprop-0.2.4
Starting     nonlinear-optimization-backprop-0.2.4
Building     nonlinear-optimization-backprop-0.2.4
Completed    nonlinear-optimization-backprop-0.2.4