Resolving dependencies... cabal: Could not resolve dependencies: next goal: repa-examples (user goal) rejecting: repa-examples-3.4.0.1, 3.3.1.1, 3.2.5.1, 3.2.3.2, 3.2.3.1, 3.2.2.201204.1, 3.2.2.3, 3.2.2.1 (global constraint requires ==3.2.1.1) trying: repa-examples-3.2.1.1 trying: base-4.8.1.0/installed-4f7... (dependency of repa-examples-3.2.1.1) next goal: vector (dependency of repa-examples-3.2.1.1) rejecting: vector-0.11.0.0, 0.10.12.3, 0.10.12.2, 0.10.12.1, 0.10.11.0, 0.10.10.0, 0.10.9.2, 0.10.9.1, 0.10.9.0, 0.10.0.1, 0.10 (conflict: repa-examples => vector==0.9.*) trying: vector-0.9.1 next goal: primitive (dependency of vector-0.9.1) rejecting: primitive-0.6.1.0, 0.5.4.0, 0.5.3.0, 0.5.2.1, 0.5.1.0, 0.5.0.1, 0.5 (conflict: vector => primitive>=0.4.0.1 && <0.5) rejecting: primitive-0.4.1, 0.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., primitive => base>=4 && <4.7) rejecting: primitive-0.4, 0.3.1, 0.3, 0.2.1, 0.2, 0.1, 0.6 (conflict: vector => primitive>=0.4.0.1 && <0.5) Dependency tree exhaustively searched.