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: porcupine-http-0.1.0.0 (user goal)
[__1] trying: porcupine-core-0.1.0.0 (dependency of porcupine-http)
[__2] unknown package: monad-bayes (dependency of porcupine-core)
[__2] fail (backjumping, conflict set: monad-bayes, porcupine-core)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: porcupine-core, porcupine-http,
monad-bayes