Resolving dependencies... cabal: Could not resolve dependencies: next goal: hpaco (user goal) rejecting: hpaco-0.28.0.5, 0.28.0.4, 0.28.0.3, 0.28.0.2, 0.28.0.1, 0.28.0.0, 0.26.0.0, 0.25.2.0, 0.22.0.0, 0.18.0.0, 0.16.2.0 (global constraint requires ==0.16.1.0) trying: hpaco-0.16.1.0 trying: base-4.8.1.0/installed-4f7... (dependency of hpaco-0.16.1.0) next goal: hpaco-lib (dependency of hpaco-0.16.1.0) rejecting: hpaco-lib-0.28.0.5, 0.28.0.4, 0.28.0.3, 0.28.0.2, 0.28.0.1, 0.28.0.0, 0.26.0.0, 0.25.2.0, 0.24.1.0, 0.24.0.0, 0.22.4.0, 0.22.0.0, 0.18.0.0, 0.16.2.0 (conflict: hpaco => hpaco-lib==0.16.1.0) trying: hpaco-lib-0.16.1.0 next goal: file-embed (dependency of hpaco-lib-0.16.1.0) rejecting: file-embed-0.0.9, 0.0.8.2, 0.0.8.1, 0.0.8, 0.0.7.1, 0.0.7, 0.0.6, 0.0.5 (conflict: hpaco-lib => file-embed==0.0.4.*) trying: file-embed-0.0.4.9 trying: template-haskell-2.10.0.0/installed-90e... (dependency of file-embed-0.0.4.9) trying: pretty-1.1.2.0/installed-293... (dependency of template-haskell-2.10.0.0/installed-90e...) next goal: containers (dependency of hpaco-lib-0.16.1.0) rejecting: containers-0.5.6.2/installed-2de..., 0.5.6.3, 0.5.6.2, 0.5.6.1, 0.5.6.0, 0.5.5.1, 0.5.5.0, 0.5.4.0, 0.5.3.1, 0.5.3.0, 0.5.2.1, 0.5.2.0, 0.5.1.0, 0.5.0.0 (conflict: hpaco-lib => containers>=0.2 && <0.5) rejecting: containers-0.4.2.1 (conflict: pretty => deepseq==1.4.1.1/installed-8fb..., containers => deepseq>=1.2 && <1.4) rejecting: containers-0.4.2.0 (conflict: pretty => deepseq==1.4.1.1/installed-8fb..., containers => deepseq>=1.2 && <1.3) rejecting: containers-0.4.1.0 (conflict: base==4.8.1.0/installed-4f7..., containers => base>=4.2 && <4.8) rejecting: containers-0.4.0.0, 0.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., containers => base>=4.2 && <4.7) rejecting: containers-0.2.0.1, 0.2.0.0 (conflict: base==4.8.1.0/installed-4f7..., containers => base<4.7) rejecting: containers-0.1.0.1, 0.1.0.0 (conflict: hpaco-lib => containers>=0.2 && <0.5) Dependency tree exhaustively searched.