Resolving dependencies... cabal: Could not resolve dependencies: next goal: aws (user goal) rejecting: aws-0.13.0, 0.12.1, 0.12, 0.11.4, 0.11.3, 0.11.2, 0.11.1, 0.11, 0.10.5, 0.10.4, 0.10.3, 0.10.2, 0.10.1, 0.10 (global constraint requires ==0.9.5) trying: aws-0.9.5 trying: base-4.8.1.0/installed-4f7... (dependency of aws-0.9.5) next goal: xml-conduit (dependency of aws-0.9.5) rejecting: xml-conduit-1.3.2, 1.3.1, 1.3.0 (conflict: aws => xml-conduit>=1.2 && <1.3) trying: xml-conduit-1.2.6 trying: deepseq-1.4.1.1/installed-8fb... (dependency of xml-conduit-1.2.6) next goal: time (dependency of aws-0.9.5) rejecting: time-1.5.0.1/installed-c20..., 1.5.0.1, 1.5 (conflict: aws => time>=1.1.4 && <1.5) rejecting: time-1.4.2, 1.4.1 (conflict: deepseq==1.4.1.1/installed-8fb..., time => deepseq>=1.1 && <1.4) rejecting: time-1.4.0.2 (conflict: base==4.8.1.0/installed-4f7..., time => base>=4 && <4.7) rejecting: time-1.4.0.1, 1.4 (conflict: base==4.8.1.0/installed-4f7..., time => base<4.7) rejecting: time-1.3, 1.2.0.5, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.1 (conflict: base==4.8.1.0/installed-4f7..., time => base>=4 && <4.7) rejecting: time-1.2 (conflict: base==4.8.1.0/installed-4f7..., time => base<0) rejecting: time-1.1.4 (conflict: base==4.8.1.0/installed-4f7..., time => base>=4 && <4.7) rejecting: time-1.1.3, 1.1.2.4, 1.1.2.3, 1.1.2.2, 1.1.2.1, 1.1.2.0, 1.0 (conflict: aws => time>=1.1.4 && <1.5) Dependency tree exhaustively searched.