Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: nanovg-0.8.0.0 (user goal) [__1] rejecting: nanovg:-stb_truetype (conflict: pkg-config package glew-any, not found in the pkg-config database) [__1] rejecting: nanovg:+stb_truetype (manual flag can only be changed explicitly) [__1] fail (backjumping, conflict set: nanovg, nanovg:stb_truetype) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: nanovg, nanovg:stb_truetype