Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: pango (user goal)
[__0] rejecting: pango-0.13.8.1 (conflict: pkg-config package pango==1.0 ||
>1.0, not found in the pkg-config database)
[__0] rejecting: pango-0.13.8.0, pango-0.13.6.1, pango-0.13.6.0,
pango-0.13.5.0, pango-0.13.4.0, pango-0.13.3.1, pango-0.13.3.0,
pango-0.13.2.0, pango-0.13.1.1, pango-0.13.1.0, pango-0.13.0.5,
pango-0.13.0.4, pango-0.13.0.3, pango-0.13.0.2, pango-0.13.0.1,
pango-0.13.0.0, pango-0.12.5.3, pango-0.12.5.0, pango-0.12.4, pango-0.12.3,
pango-0.12.2, pango-0.12.1, pango-0.12.0, pango-0.11.2, pango-0.11.1,
pango-0.11.0 (constraint from user target requires ==0.13.8.1)
[__0] fail (backjumping, conflict set: pango)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: pango