Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: alsa-gui (user goal)
rejecting: alsa-gui-0.1 (global constraint requires ==0.0.1)
trying: alsa-gui-0.0.1
trying: base-4.8.1.0/installed-4f7... (dependency of alsa-gui-0.0.1)
next goal: alsa-seq (dependency of alsa-gui-0.0.1)
rejecting: alsa-seq-0.6.0.5, 0.6.0.4, 0.6.0.3, 0.6.0.2, 0.6.0.1, 0.6
(conflict: alsa-gui => alsa-seq>=0.5.1 && <0.6)
trying: alsa-seq-0.5.1.1
next goal: array (dependency of alsa-seq-0.5.1.1)
rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0 (conflict:
alsa-seq => array>=0.1 && <0.5)
rejecting: array-0.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.7)
rejecting: array-0.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.6)
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.