Resolving dependencies... cabal: Could not resolve dependencies: next goal: haskell-updater (user goal) rejecting: haskell-updater-1.2.10, haskell-updater-1.2.9, haskell-updater-1.2.8, haskell-updater-1.2.7, haskell-updater-1.2.6, haskell-updater-1.2.5, haskell-updater-1.2.4, haskell-updater-1.2.3, haskell-updater-1.2.1, haskell-updater-1.2.0.12, haskell-updater-1.2.0.11, haskell-updater-1.2.0.10, haskell-updater-1.2.0.9, haskell-updater-1.2.0.8, haskell-updater-1.2.0.7, haskell-updater-1.2.0.6, haskell-updater-1.2.0.5, haskell-updater-1.2.0.4, haskell-updater-1.2.0.3, haskell-updater-1.2.0.2, haskell-updater-1.2.0.1 (constraint from user target requires ==1.2.0.0) trying: haskell-updater-1.2.0.0 trying: base-4.9.0.0/installed-4.9... (dependency of haskell-updater-1.2.0.0) next goal: process (dependency of haskell-updater-1.2.0.0) rejecting: process-1.4.2.0/installed-1.4..., process-1.4.3.0, process-1.4.2.0, process-1.4.1.0, process-1.4.0.0, process-1.3.0.0, process-1.2.3.0, process-1.2.2.0, process-1.2.1.0, process-1.2.0.0, process-1.1.0.2, process-1.1.0.1, process-1.1.0.0 (conflict: haskell-updater => process<1.1) rejecting: process-1.0.1.5, process-1.0.1.4 (conflict: base==4.9.0.0/installed-4.9..., process => base>=4 && <4.5 || >=3 && <4) trying: process-1.0.1.3 next goal: directory (dependency of haskell-updater-1.2.0.0) rejecting: directory-1.2.6.2/installed-1.2..., directory-1.3.0.0, directory-1.2.7.1, directory-1.2.7.0, directory-1.2.6.3, directory-1.2.6.2, directory-1.2.5.1, directory-1.2.5.0, directory-1.2.4.0, directory-1.2.3.1, directory-1.2.3.0, directory-1.2.2.1, directory-1.2.2.0, directory-1.2.1.0, directory-1.2.0.1, directory-1.2.0.0 (conflict: haskell-updater => directory<1.2) rejecting: directory-1.1.0.2, directory-1.1.0.1, directory-1.1.0.0 (conflict: process => directory>=1.0 && <1.1) rejecting: directory-1.0.1.2 (conflict: base==4.9.0.0/installed-4.9..., directory => base>=4.2 && <4.4) rejecting: directory-1.0.1.1, directory-1.0.1.0 (conflict: base==4.9.0.0/installed-4.9..., directory => base>=4.1 && <4.3) rejecting: directory-1.0.0.3, directory-1.0.0.0 (conflict: base==4.9.0.0/installed-4.9..., directory => base<4.3) rejecting: directory-1.2.6.1 (conflict: haskell-updater => directory<1.2) Dependency tree exhaustively searched.