Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: gi-gtk-hs-0.3.6.1 (user goal)
[__1] trying: haskell-gi-base-0.21.0 (dependency of gi-gtk-hs)
[__2] trying: gi-gdk-3.0.15 (dependency of gi-gtk-hs)
[__3] next goal: gi-gdk:setup.haskell-gi (dependency of gi-gdk)
[__3] rejecting: gi-gdk:setup.haskell-gi-0.21.0 (conflict: pkg-config package
gobject-introspection-1.0>=1.32, not found in the pkg-config database)
[__3] rejecting: gi-gdk:setup.haskell-gi-0.20.3,
gi-gdk:setup.haskell-gi-0.20.2, gi-gdk:setup.haskell-gi-0.20.1,
gi-gdk:setup.haskell-gi-0.20, gi-gdk:setup.haskell-gi-0.18,
gi-gdk:setup.haskell-gi-0.17.4, gi-gdk:setup.haskell-gi-0.17.3,
gi-gdk:setup.haskell-gi-0.17.2, gi-gdk:setup.haskell-gi-0.17.1,
gi-gdk:setup.haskell-gi-0.17, gi-gdk:setup.haskell-gi-0.15,
gi-gdk:setup.haskell-gi-0.14, gi-gdk:setup.haskell-gi-0.13,
gi-gdk:setup.haskell-gi-0.12, gi-gdk:setup.haskell-gi-0.11,
gi-gdk:setup.haskell-gi-0.10.2, gi-gdk:setup.haskell-gi-0.10.1,
gi-gdk:setup.haskell-gi-0.10, gi-gdk:setup.haskell-gi-0.9,
gi-gdk:setup.haskell-gi-0.8 (conflict: gi-gdk =>
gi-gdk:setup.haskell-gi==0.21.*)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: haskell-gi, gi-gdk, haskell-gi-base,
gi-gdk:setup.haskell-gi, gi-gtk-hs