Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] trying: gi-soup-3.0.4 (user goal)
[__1] next goal: gi-soup3 (dependency of gi-soup)
[__1] rejecting: gi-soup3-3.0.4 (conflict: pkg-config package libsoup-3.0-any,
not found in the pkg-config database)
[__1] fail (backjumping, conflict set: gi-soup, gi-soup3)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-soup, gi-soup3