Resolving dependencies...
cabal: Could not resolve dependencies:
trying: gi-gobject-2.0.6 (dependency of gi-pango-1.0.4)
next goal: gi-gobject-setup.haskell-gi (dependency of gi-gobject-2.0.6)
rejecting: gi-gobject-setup.haskell-gi-0.18 (conflict: requires pkg-config
package gobject-introspection-1.0>=1.32, not found in the pkg-config database)
rejecting: gi-gobject-setup.haskell-gi-0.17.4,
gi-gobject-setup.haskell-gi-0.17.3, gi-gobject-setup.haskell-gi-0.17.2,
gi-gobject-setup.haskell-gi-0.17.1, gi-gobject-setup.haskell-gi-0.17,
gi-gobject-setup.haskell-gi-0.15, gi-gobject-setup.haskell-gi-0.14,
gi-gobject-setup.haskell-gi-0.13, gi-gobject-setup.haskell-gi-0.12,
gi-gobject-setup.haskell-gi-0.11, gi-gobject-setup.haskell-gi-0.10.2,
gi-gobject-setup.haskell-gi-0.10.1, gi-gobject-setup.haskell-gi-0.10,
gi-gobject-setup.haskell-gi-0.9, gi-gobject-setup.haskell-gi-0.8 (conflict:
gi-gobject => gi-gobject-setup.haskell-gi>=0.18 && <1)
Dependency tree exhaustively searched.