Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] trying: gi-gtksource-5.0.2 (user goal)
[__1] next goal: gi-gtksource5 (dependency of gi-gtksource)
[__1] rejecting: gi-gtksource5-5.0.2 (conflict: pkg-config package
gtksourceview-5-any, not found in the pkg-config database)
[__1] fail (backjumping, conflict set: gi-gtksource, gi-gtksource5)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-gtksource, gi-gtksource5