Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: minilight-0.4.4 (user goal) [__1] next goal: sdl2-ttf (dependency of minilight) [__1] rejecting: sdl2-ttf-2.1.1, sdl2-ttf-2.1.0 (conflict: pkg-config package SDL2_ttf==2.0.12 || >2.0.12, not found in the pkg-config database) [__1] rejecting: sdl2-ttf-2.0.2 (conflict: minilight => sdl2-ttf>=2.1.0 && <2.2) [__1] skipping: sdl2-ttf-2.0.1, sdl2-ttf-2.0.0, sdl2-ttf-1.0.0, sdl2-ttf-0.2.2, sdl2-ttf-0.2.1, sdl2-ttf-0.2.0 (has the same characteristics that caused the previous version to fail: excluded by constraint '>=2.1.0 && <2.2' from 'minilight') [__1] fail (backjumping, conflict set: minilight, sdl2-ttf) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: minilight, sdl2-ttf