Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: bustle (user goal)
[__0] rejecting: bustle-0.7.1 (conflict: pkg-config package glib-2.0>=2.54,
not found in the pkg-config database)
[__0] rejecting: bustle-0.6.2, bustle-0.6.1, bustle-0.5.4, bustle-0.5.3,
bustle-0.5.2, bustle-0.5.1, bustle-0.5.0, bustle-0.4.8, bustle-0.4.7,
bustle-0.4.6, bustle-0.4.5, bustle-0.4.4, bustle-0.4.3 (constraint from user
target requires ==0.7.1)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: bustle