Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: Hayoo (user goal)
rejecting: Hayoo-1.2.3 (global constraint requires ==1.2.0)
trying: Hayoo-1.2.0
trying: base-4.7.0.1/installed-e4b... (dependency of Hayoo-1.2.0)
next goal: snap-server (dependency of Hayoo-1.2.0)
rejecting: snap-server-0.9.5.1, 0.9.5.0, 0.9.4.6, 0.9.4.5, 0.9.4.4, 0.9.4.3,
0.9.4.2, 0.9.4.1, 0.9.4.0, 0.9.3.4, 0.9.3.3, 0.9.3.1, 0.9.3, 0.9.2.4, 0.9.2.3,
0.9.2.2, 0.9.2.1, 0.9.2, 0.9.0, 0.8.1.1, 0.8.1, 0.8.0.1, 0.8.0, 0.7.0.1, 0.7,
0.6.0.1, 0.6.0, 0.5.5, 0.5.4, 0.5.3.1, 0.5.3, 0.5.2, 0.5.1.4, 0.5.1.3,
0.5.1.2, 0.5.1.1, 0.5.1, 0.5.0 (conflict: Hayoo => snap-server==0.4.*)
trying: snap-server-0.4.3
next goal: vector-algorithms (dependency of snap-server-0.4.3)
rejecting: vector-algorithms-0.7, 0.6.0.4, 0.6.0.3, 0.6.0.2, 0.6.0.1, 0.5.4.2,
0.5.4.1, 0.5.4, 0.5.3.1, 0.5.3, 0.5.2, 0.5.1, 0.5.0 (conflict: snap-server =>
vector-algorithms>=0.4 && <0.5)
trying: vector-algorithms-0.4
next goal: primitive (dependency of vector-algorithms-0.4)
rejecting: primitive-0.6, 0.5.4.0, 0.5.3.0, 0.5.2.1, 0.5.1.0, 0.5.0.1, 0.5,
0.4.1, 0.4.0.1, 0.4 (conflict: vector-algorithms => primitive>=0.3 && <0.4)
rejecting: primitive-0.3.1, 0.3 (conflict: base==4.7.0.1/installed-e4b...,
primitive => base>=4 && <4.7)
rejecting: primitive-0.2.1, 0.2, 0.1 (conflict: vector-algorithms =>
primitive>=0.3 && <0.4)
Dependency tree exhaustively searched.