Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: keid-ui-dearimgui-0.1.0.0 (user goal) [__1] trying: dear-imgui-1.0.1 (dependency of keid-ui-dearimgui) [__2] rejecting: dear-imgui:+opengl3 (conflict: pkg-config package glew-any, not found in the pkg-config database) [__2] rejecting: dear-imgui:-opengl3 (manual flag can only be changed explicitly) [__2] fail (backjumping, conflict set: dear-imgui, dear-imgui:opengl3) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: dear-imgui, dear-imgui:opengl3, keid-ui-dearimgui