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...
cabal: Could not resolve dependencies:
[__0] trying: asap-0.0.2 (user goal)
[__1] next goal: jwt (dependency of asap)
[__1] rejecting: jwt-0.9.0, jwt-0.8.0, jwt-0.7.2, jwt-0.7.1, jwt-0.7.0,
jwt-0.6.0, jwt-0.5.3, jwt-0.5.2, jwt-0.5.1, jwt-0.5.0, jwt-0.4.4, jwt-0.4.3,
jwt-0.4.2, jwt-0.4.1, jwt-0.4.0, jwt-0.3.0, jwt-0.2.1, jwt-0.2.0, jwt-0.1.1,
jwt-0.1.0 (conflict: asap => jwt>=0.10 && <0.11)
[__1] fail (backjumping, conflict set: asap, jwt)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: asap, jwt