Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: gi-pango (user goal)
rejecting: gi-pango-1.0.6, gi-pango-1.0.5, gi-pango-1.0.4, gi-pango-1.0.3,
gi-pango-1.0.2, gi-pango-1.0.1, gi-pango-0.1.38.15, gi-pango-0.1.38.14,
gi-pango-0.1.38.13, gi-pango-0.1.38.12 (constraint from user target requires
==0.1.36.12)
trying: gi-pango-0.1.36.12
next goal: gi-gobject (dependency of gi-pango-0.1.36.12)
rejecting: gi-gobject-2.0.6, gi-gobject-2.0.5, gi-gobject-2.0.4,
gi-gobject-2.0.3, gi-gobject-2.0.2, gi-gobject-2.0.1, gi-gobject-0.2.46.15,
gi-gobject-0.2.46.14, gi-gobject-0.2.46.13, gi-gobject-0.2.46.12 (conflict:
gi-pango => gi-gobject>=0.2.44.12 && <0.2.45)
rejecting: gi-gobject-0.2.44.12 (conflict: requires pkg-config package
gobject-2.0>=2.44, not found in the pkg-config database)
rejecting: gi-gobject-0.2.46.10, gi-gobject-0.2.44.11, gi-gobject-0.2.44.10,
gi-gobject-0.2.44.9, gi-gobject-0.2.44.8 (conflict: gi-pango =>
gi-gobject>=0.2.44.12 && <0.2.45)
Dependency tree exhaustively searched.