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] next goal: gi-pangocairo (user goal)
[__0] rejecting: gi-pangocairo-1.0.23 (conflict: pkg-config package
pangocairo>=1.0 && <2, not found in the pkg-config database)
[__0] rejecting: gi-pangocairo-1.0.22, gi-pangocairo-1.0.21,
gi-pangocairo-1.0.20, gi-pangocairo-1.0.19, gi-pangocairo-1.0.17,
gi-pangocairo-1.0.16, gi-pangocairo-1.0.15, gi-pangocairo-1.0.14,
gi-pangocairo-1.0.13, gi-pangocairo-1.0.12, gi-pangocairo-1.0.11,
gi-pangocairo-1.0.10, gi-pangocairo-1.0.9, gi-pangocairo-1.0.8,
gi-pangocairo-1.0.7, gi-pangocairo-1.0.6, gi-pangocairo-1.0.5,
gi-pangocairo-1.0.4, gi-pangocairo-1.0.3, gi-pangocairo-1.0.2,
gi-pangocairo-1.0.1, gi-pangocairo-0.1.38.15, gi-pangocairo-0.1.38.14
(constraint from user target requires ==1.0.23)
[__0] fail (backjumping, conflict set: gi-pangocairo)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-pangocairo