Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: sdl2-mixer (user goal)
rejecting: sdl2-mixer-1.1.0 (conflict: requires pkg-config package
SDL2_mixer>=2.0.0, not found in the pkg-config database)
rejecting: sdl2-mixer-0.1 (constraint from user target requires ==1.1.0)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: sdl2-mixer