Resolving dependencies...
cabal: Could not resolve dependencies:
trying: gi-cairo-1.0.6 (dependency of gi-gtk-3.0.4)
next goal: gi-cairo-setup.haskell-gi (dependency of gi-cairo-1.0.6)
rejecting: gi-cairo-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-cairo-setup.haskell-gi-0.17.4, gi-cairo-setup.haskell-gi-0.17.3,
gi-cairo-setup.haskell-gi-0.17.2, gi-cairo-setup.haskell-gi-0.17.1,
gi-cairo-setup.haskell-gi-0.17, gi-cairo-setup.haskell-gi-0.15,
gi-cairo-setup.haskell-gi-0.14, gi-cairo-setup.haskell-gi-0.13,
gi-cairo-setup.haskell-gi-0.12, gi-cairo-setup.haskell-gi-0.11,
gi-cairo-setup.haskell-gi-0.10.2, gi-cairo-setup.haskell-gi-0.10.1,
gi-cairo-setup.haskell-gi-0.10, gi-cairo-setup.haskell-gi-0.9,
gi-cairo-setup.haskell-gi-0.8 (conflict: gi-cairo =>
gi-cairo-setup.haskell-gi>=0.18 && <1)
Dependency tree exhaustively searched.