Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: scope (user goal)
rejecting: scope-0.8.0.1, scope-0.8.0.0, scope-0.7.0.0, scope-0.6.1.0,
scope-0.6.0.0, scope-0.5.2.0, scope-0.5.1.0 (constraint from user target
requires ==0.5.0.0)
trying: scope-0.5.0.0
trying: base-4.9.0.0/installed-4.9... (dependency of scope-0.5.0.0)
trying: deepseq-1.4.2.0/installed-1.4... (dependency of vector-0.11.0.0)
next goal: containers (dependency of scope-0.5.0.0)
rejecting: containers-0.5.7.1/installed-0.5..., containers-0.5.9.1,
containers-0.5.8.1, containers-0.5.7.1, containers-0.5.7.0,
containers-0.5.6.3, containers-0.5.6.2, containers-0.5.6.1,
containers-0.5.6.0, containers-0.5.5.1, containers-0.5.5.0,
containers-0.5.4.0, containers-0.5.3.1, containers-0.5.3.0,
containers-0.5.2.1, containers-0.5.2.0, containers-0.5.1.0, containers-0.5.0.0
(conflict: scope => containers>=0.2 && <0.5)
rejecting: containers-0.4.2.1 (conflict: deepseq==1.4.2.0/installed-1.4...,
containers => deepseq>=1.2 && <1.4)
rejecting: containers-0.4.2.0 (conflict: deepseq==1.4.2.0/installed-1.4...,
containers => deepseq>=1.2 && <1.3)
rejecting: containers-0.4.1.0 (conflict: base==4.9.0.0/installed-4.9...,
containers => base>=4.2 && <4.8)
rejecting: containers-0.4.0.0, containers-0.3.0.0 (conflict:
base==4.9.0.0/installed-4.9..., containers => base>=4.2 && <4.7)
rejecting: containers-0.2.0.1, containers-0.2.0.0 (conflict:
base==4.9.0.0/installed-4.9..., containers => base<4.7)
rejecting: containers-0.1.0.1, containers-0.1.0.0 (conflict: scope =>
containers>=0.2 && <0.5)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).