Resolving dependencies... cabal: Could not resolve dependencies: trying: alsa-pcm-tests-0.1 (user goal) trying: base-4.8.1.0/installed-4f7... (dependency of alsa-pcm-tests-0.1) trying: alsa-0.4 (dependency of alsa-pcm-tests-0.1) next goal: array (dependency of alsa-0.4) rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0, 0.4.0.1, 0.4.0.0 (conflict: alsa => array>=0.1 && <0.4) rejecting: array-0.3.0.3 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.5) rejecting: array-0.3.0.2, 0.3.0.1 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.4) rejecting: array-0.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base>=3 && <4.4) rejecting: array-0.2.0.0, 0.1.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base<4.3) Dependency tree exhaustively searched.