Resolving dependencies... cabal: Could not resolve dependencies: trying: base-4.9.0.0/installed-4.9... (dependency of caledon-3.2.0.0) next goal: lens (dependency of caledon-3.2.0.0) rejecting: lens-4.15.1, lens-4.15, lens-4.14, lens-4.13.2.1, lens-4.13.2, lens-4.13.1, lens-4.13, lens-4.12.3, lens-4.12.2, lens-4.12.1, lens-4.12, lens-4.11.1, lens-4.11, lens-4.10, lens-4.9.1, lens-4.9, lens-4.8, lens-4.7.0.1, lens-4.7, lens-4.6.0.1, lens-4.6, lens-4.5, lens-4.4.0.2, lens-4.4.0.1, lens-4.4, lens-4.3.3, lens-4.3.2, lens-4.3.1, lens-4.3, lens-4.2, lens-4.1.2.1, lens-4.1.2, lens-4.1.1, lens-4.1, lens-4.0.7, lens-4.0.6, lens-4.0.5, lens-4.0.4, lens-4.0.3, lens-4.0.2, lens-4.0.1, lens-4.0 (conflict: caledon => lens>=3.0 && <4.0) rejecting: lens-3.10.3, lens-3.10.2, lens-3.10.1, lens-3.10.0.1, lens-3.10 (conflict: base==4.9.0.0/installed-4.9..., lens => base>=4.4 && <4.7) trying: lens-3.9.2 next goal: deepseq (dependency of void-0.7.1) rejecting: deepseq-1.4.2.0/installed-1.4... (conflict: deepseq => array==0.5.1.1/installed-0.5..., lens => array>=0.3.0.2 && <0.5) trying: deepseq-1.4.2.0 next goal: text (dependency of lens-3.9.2) rejecting: text-1.2.2.1, text-1.2.2.0, text-1.2.1.3, text-1.2.1.2, text-1.2.1.1, text-1.2.1.0, text-1.2.0.6, text-1.2.0.5, text-1.2.0.4, text-1.2.0.3, text-1.2.0.2, text-1.2.0.0, text-1.1.1.4, text-1.1.1.3, text-1.1.1.2, text-1.1.1.1, text-1.1.1.0, text-1.1.0.1, text-1.1.0.0, text-1.0.0.1, text-1.0.0.0 (conflict: lens => text>=0.11 && <0.12) rejecting: text-0.11.3.1, text-0.11.3.0, text-0.11.2.3, text-0.11.2.2, text-0.11.2.1, text-0.11.2.0, text-0.11.1.13, text-0.11.1.12, text-0.11.1.11, text-0.11.1.10, text-0.11.1.9, text-0.11.1.8, text-0.11.1.7, text-0.11.1.6, text-0.11.1.5, text-0.11.1.3, text-0.11.1.2, text-0.11.1.1 (conflict: deepseq==1.4.2.0, text => deepseq>=1.1.0.0 && <1.4) rejecting: text-0.11.1.0 (conflict: base==4.9.0.0/installed-4.9..., text => base<0) rejecting: text-0.11.0.8, text-0.11.0.7 (conflict: base==4.9.0.0/installed-4.9..., text => base<4.6) rejecting: text-0.11.0.6, text-0.11.0.5 (conflict: base==4.9.0.0/installed-4.9..., text => base<4.4) rejecting: text-0.11.0.4 (conflict: base==4.9.0.0/installed-4.9..., text => base<0) rejecting: text-0.11.0.3, text-0.11.0.2, text-0.11.0.1, text-0.11.0.0 (conflict: base==4.9.0.0/installed-4.9..., text => base<4.4) rejecting: text-0.10.0.2, text-0.10.0.1, text-0.10.0.0, text-0.9.1.0, text-0.9.0.1, text-0.9.0.0, text-0.8.1.0, text-0.8.0.0, text-0.7.2.1, text-0.7.1.0, text-0.7.0.1, text-0.7, text-0.6, text-0.5, text-0.4, text-0.3, text-0.2, text-0.1 (conflict: lens => text>=0.11 && <0.12) Dependency tree exhaustively searched.