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     haskell-lexer-1.0.2
Starting     hashable-1.2.7.0
Building     haskell-lexer-1.0.2
Building     hashable-1.2.7.0
Completed    hashable-1.2.7.0
Starting     integer-logarithms-1.0.2.2
Building     integer-logarithms-1.0.2.2
Completed    integer-logarithms-1.0.2.2
Starting     primitive-0.6.4.0
Building     primitive-0.6.4.0
Completed    haskell-lexer-1.0.2
Starting     system-filepath-0.4.14
Completed    primitive-0.6.4.0
Starting     pretty-show-1.9.2
Building     pretty-show-1.9.2
Building     system-filepath-0.4.14
Completed    system-filepath-0.4.14
Starting     vector-0.12.0.1
Completed    pretty-show-1.9.2
Starting     scientific-0.3.6.2
Building     vector-0.12.0.1
Building     scientific-0.3.6.2
Completed    scientific-0.3.6.2
Starting     attoparsec-0.13.2.2
Building     attoparsec-0.13.2.2
Completed    attoparsec-0.13.2.2
Completed    vector-0.12.0.1
Downloading  nix-derivation-1.0.2
Downloaded   nix-derivation-1.0.2
Starting     nix-derivation-1.0.2
Building     nix-derivation-1.0.2
Completed    nix-derivation-1.0.2