Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: taffybar (user goal)
[__0] rejecting: taffybar-3.2.5, taffybar-3.2.4, taffybar-3.2.3,
taffybar-3.2.2, taffybar-3.2.1, taffybar-3.2.0, taffybar-3.1.2,
taffybar-3.1.1, taffybar-3.1.0, taffybar-3.0.0, taffybar-2.1.2,
taffybar-2.1.1, taffybar-2.1.0, taffybar-2.0.0, taffybar-1.0.2, taffybar-1.0.1
(constraint from user target requires ==1.0.0)
[__0] rejecting: taffybar-1.0.0 (conflict: pkg-config package gtk+-3.0-any,
not found in the pkg-config database)
[__0] rejecting: taffybar-0.4.6, taffybar-0.4.5, taffybar-0.4.4,
taffybar-0.4.3, taffybar-0.4.2, taffybar-0.4.1, taffybar-0.4.0,
taffybar-0.3.0, taffybar-0.2.1, taffybar-0.2.0, taffybar-0.1.3,
taffybar-0.1.2, taffybar-0.1.1, taffybar-0.1.0 (constraint from user target
requires ==1.0.0)
[__0] fail (backjumping, conflict set: taffybar)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: taffybar