Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: nonlinear-optimization (user goal)
rejecting: nonlinear-optimization-0.3.10, nonlinear-optimization-0.3.9,
nonlinear-optimization-0.3.8, nonlinear-optimization-0.3.7,
nonlinear-optimization-0.3.6, nonlinear-optimization-0.3.5.2,
nonlinear-optimization-0.3.5.1, nonlinear-optimization-0.3.5 (constraint from
user target requires ==0.3.4)
trying: nonlinear-optimization-0.3.4
trying: base-4.9.0.0/installed-4.9... (dependency of
nonlinear-optimization-0.3.4)
next goal: primitive (dependency of nonlinear-optimization-0.3.4)
rejecting: primitive-0.6.2.0, primitive-0.6.1.0, primitive-0.5.4.0,
primitive-0.5.3.0, primitive-0.5.2.1, primitive-0.5.1.0, primitive-0.5.0.1,
primitive-0.5, primitive-0.4.1, primitive-0.4.0.1, primitive-0.4 (conflict:
nonlinear-optimization => primitive>=0.2 && <0.4)
rejecting: primitive-0.3.1, primitive-0.3 (conflict:
base==4.9.0.0/installed-4.9..., primitive => base>=4 && <4.7)
rejecting: primitive-0.2.1, primitive-0.2 (conflict:
base==4.9.0.0/installed-4.9..., primitive => base>=2 && <4.7)
rejecting: primitive-0.1, primitive-0.6 (conflict: nonlinear-optimization =>
primitive>=0.2 && <0.4)
Dependency tree exhaustively searched.