Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: webkit2gtk3-javascriptcore (user goal)
[__0] rejecting: webkit2gtk3-javascriptcore-0.14.4.5 (conflict: pkg-config
package webkit2gtk-4.0>=1.1.15, not found in the pkg-config database)
[__0] rejecting: webkit2gtk3-javascriptcore-0.14.4.4,
webkit2gtk3-javascriptcore-0.14.4.3, webkit2gtk3-javascriptcore-0.14.4.2,
webkit2gtk3-javascriptcore-0.14.4.1, webkit2gtk3-javascriptcore-0.14.4.0,
webkit2gtk3-javascriptcore-0.14.3.0, webkit2gtk3-javascriptcore-0.14.2.1
(constraint from user target requires ==0.14.4.5)
[__0] fail (backjumping, conflict set: webkit2gtk3-javascriptcore)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: webkit2gtk3-javascriptcore