Resolving dependencies... cabal: Could not resolve dependencies: trying: acme-everything-2015.5.4.1 (user goal) trying: base-4.7.0.1/installed-e4b... (dependency of acme-everything-2015.5.4.1) trying: ztail-1.1 (dependency of acme-everything-2015.5.4.1) trying: containers-0.5.5.1/installed-23e... (dependency of ztail-1.1) trying: unix-2.7.0.1/installed-0d8... (dependency of ztail-1.1) trying: regex-compat-0.95.1 (dependency of ztail-1.1) trying: regex-base-0.93.2 (dependency of regex-compat-0.95.1) trying: mtl-2.2.1 (dependency of regex-base-0.93.2) trying: zoom-cache-sndfile-1.1.0.1 (dependency of acme-everything-2015.5.4.1) trying: zoom-cache-pcm-0.3.0.1 (dependency of zoom-cache-sndfile-1.1.0.1) next goal: ListLike (dependency of zoom-cache-pcm-0.3.0.1) rejecting: ListLike-4.2.0, 4.1.1, 4.1.0, 4.0.2, 4.0.1, 4.0.0 (conflict: zoom-cache-pcm => ListLike>=1.0 && <4) rejecting: ListLike-3.1.7.1 (conflict: containers => array==0.5.0.0/installed-98a..., ListLike => array>=0.3 && <0.5) rejecting: ListLike-3.1.7 (conflict: base==4.7.0.1/installed-e4b..., ListLike => base<0) rejecting: ListLike-3.1.6 (conflict: containers => array==0.5.0.0/installed-98a..., ListLike => array>=0.3 && <0.5) rejecting: ListLike-3.1.5 (conflict: unix => bytestring==0.10.4.0/installed-9f4..., ListLike => bytestring>=0.9.1 && <0.10) rejecting: ListLike-3.1.4, 3.1.2, 3.1.1, 3.1.0, 3.0.1, 2.0.1, 2.0.0 (conflict: containers==0.5.5.1/installed-23e..., ListLike => containers>=0.3 && <0.5) rejecting: ListLike-1.1.0, 1.0.2 (conflict: mtl==2.2.1, ListLike => mtl>=1.1.0 && <1.2) rejecting: ListLike-1.0.1 (conflict: base==4.7.0.1/installed-e4b..., ListLike => base<4.4) rejecting: ListLike-1.0.0 (conflict: base==4.7.0.1/installed-e4b..., ListLike => base<4) Backjump limit reached (change with --max-backjumps).