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: voicebase-0.2.0.0 (user goal)
[__1] trying: text-1.2.3.1/installed-1.2... (dependency of voicebase)
[__2] trying: binary-0.8.6.0/installed-0.8... (dependency of text)
[__3] next goal: roundtrip-aeson (dependency of voicebase)
[__3] rejecting: roundtrip-aeson-0.3.0.2, roundtrip-aeson-0.2.0.2,
roundtrip-aeson-0.2.0.1 (conflict: binary =>
containers==0.6.0.1/installed-0.6..., roundtrip-aeson => containers>=0.5 &&
<0.6)
[__3] rejecting: roundtrip-aeson-0.2.0.0 (conflict: text =>
base==4.12.0.0/installed-4.1..., roundtrip-aeson => base>=4.7 && <4.8)
[__3] fail (backjumping, conflict set: binary, roundtrip-aeson, text,
voicebase)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: text, binary, base, roundtrip-aeson,
roundtrip, voicebase