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     hashable-1.2.7.0
Starting     base-compat-0.10.5
Building     hashable-1.2.7.0
Building     base-compat-0.10.5
Completed    hashable-1.2.7.0
Starting     integer-logarithms-1.0.2.2
Building     integer-logarithms-1.0.2.2
Completed    base-compat-0.10.5
Starting     primitive-0.6.4.0
Completed    integer-logarithms-1.0.2.2
Starting     stringsearch-0.3.6.6
Building     primitive-0.6.4.0
Building     stringsearch-0.3.6.6
Completed    stringsearch-0.3.6.6
Starting     time-locale-compat-0.1.1.5
Building     time-locale-compat-0.1.1.5
Completed    time-locale-compat-0.1.1.5
Starting     utf8-string-1.0.1.1
Building     utf8-string-1.0.1.1
Completed    primitive-0.6.4.0
Starting     vector-0.12.0.1
Completed    utf8-string-1.0.1.1
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  hedn-0.1.9.1
Downloaded   hedn-0.1.9.1
Starting     hedn-0.1.9.1
Building     hedn-0.1.9.1
Completed    hedn-0.1.9.1