Resolving dependencies... cabal: Could not resolve dependencies: trying: hblas-0.3.2.2 (user goal) trying: base-4.10.1.0/installed-4.1... (dependency of hblas-0.3.2.2) next goal: vector (dependency of hblas-0.3.2.2) rejecting: vector-0.12.0.1/installed-Lfl... (conflict: vector => primitive==0.6.2.0/installed-EI3..., hblas => primitive>=0.5 && <0.6) trying: vector-0.12.0.1 next goal: primitive (dependency of hblas-0.3.2.2) rejecting: primitive-0.6.2.0/installed-EI3..., primitive-0.6.3.0, primitive-0.6.2.0, primitive-0.6.1.0 (conflict: hblas => primitive>=0.5 && <0.6) rejecting: primitive-0.5.4.0 (conflict: base==4.10.1.0/installed-4.1..., primitive => base>=4.3 && <4.9) rejecting: primitive-0.5.3.0, primitive-0.5.2.1 (conflict: base==4.10.1.0/installed-4.1..., primitive => base>=4.3 && <4.8) rejecting: primitive-0.5.1.0 (conflict: base==4.10.1.0/installed-4.1..., primitive => base>=4 && <4.8) rejecting: primitive-0.5.0.1 (conflict: base==4.10.1.0/installed-4.1..., primitive => base>=4 && <4.7) rejecting: primitive-0.5 (conflict: vector => primitive>=0.5.0.1 && <0.7) rejecting: primitive-0.4.1, primitive-0.4.0.1, primitive-0.4, primitive-0.3.1, primitive-0.3, primitive-0.2.1, primitive-0.2, primitive-0.1, primitive-0.6 (conflict: hblas => primitive>=0.5 && <0.6) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: primitive, hblas, base, vector