Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: gi-gtk (user goal)
[__0] rejecting: gi-gtk-4.0.2, gi-gtk-4.0.1 (constraint from user target
requires ==3.0.36)
[__0] rejecting: gi-gtk-3.0.36 (conflict: pkg-config package gtk+-3.0-any, not
found in the pkg-config database)
[__0] rejecting: gi-gtk-3.0.35, gi-gtk-3.0.34, gi-gtk-3.0.33, gi-gtk-3.0.32,
gi-gtk-3.0.31, gi-gtk-3.0.30, gi-gtk-3.0.29, gi-gtk-3.0.28, gi-gtk-3.0.27,
gi-gtk-3.0.26, gi-gtk-3.0.25, gi-gtk-3.0.24, gi-gtk-3.0.23, gi-gtk-3.0.22,
gi-gtk-3.0.21, gi-gtk-3.0.20, gi-gtk-3.0.19, gi-gtk-3.0.18, gi-gtk-3.0.17,
gi-gtk-3.0.16, gi-gtk-3.0.15, gi-gtk-3.0.14, gi-gtk-3.0.13, gi-gtk-3.0.12,
gi-gtk-3.0.11, gi-gtk-3.0.10, gi-gtk-3.0.9, gi-gtk-3.0.8, gi-gtk-3.0.7,
gi-gtk-3.0.6, gi-gtk-3.0.5, gi-gtk-3.0.4, gi-gtk-3.0.3, gi-gtk-3.0.2,
gi-gtk-3.0.1, gi-gtk-0.3.18.15, gi-gtk-0.3.18.14, gi-gtk-0.3.18.13,
gi-gtk-0.3.18.12, gi-gtk-0.3.16.12, gi-gtk-0.3.18.10, gi-gtk-0.3.16.11,
gi-gtk-0.3.16.10, gi-gtk-0.3.16.9, gi-gtk-0.3.16.8 (constraint from user
target requires ==3.0.36)
[__0] fail (backjumping, conflict set: gi-gtk)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-gtk