Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] trying: Chart-gtk3-1.9.3 (user goal)
[__1] next goal: gtk3 (dependency of Chart-gtk3)
[__1] rejecting: gtk3-0.15.10, gtk3-0.15.9, gtk3-0.15.8, gtk3-0.15.7,
gtk3-0.15.6, gtk3-0.15.5, gtk3-0.15.4, gtk3-0.15.3, gtk3-0.15.1, gtk3-0.15.0,
gtk3-0.14.8, gtk3-0.14.7, gtk3-0.14.6, gtk3-0.14.5, gtk3-0.14.4, gtk3-0.14.3,
gtk3-0.14.2, gtk3-0.14.1, gtk3-0.14.0 (conflict: pkg-config package
gtk+-3.0-any, not found in the pkg-config database)
[__1] rejecting: gtk3-0.13.9 (conflict: Chart-gtk3 => gtk3>=0.14)
[__1] skipping: gtk3-0.13.8, gtk3-0.13.7, gtk3-0.13.6, gtk3-0.13.4,
gtk3-0.13.3, gtk3-0.13.2, gtk3-0.13.1, gtk3-0.13.0.3, gtk3-0.13.0.2,
gtk3-0.13.0.1, gtk3-0.13.0.0, gtk3-0.12.5.7, gtk3-0.12.5.6, gtk3-0.12.5.5,
gtk3-0.12.5.4, gtk3-0.12.5.3, gtk3-0.12.5.2, gtk3-0.12.5.1, gtk3-0.12.5.0 (has
the same characteristics that caused the previous version to fail: excluded by
constraint '>=0.14' from 'Chart-gtk3')
[__1] rejecting: gtk3-0.14.9 (conflict: pkg-config package gtk+-3.0-any, not
found in the pkg-config database)
[__1] fail (backjumping, conflict set: Chart-gtk3, gtk3)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gtk3, Chart-gtk3