Resolving dependencies...
cabal: Could not resolve dependencies:
trying: spike-0.3 (user goal)
trying: base-4.8.1.0/installed-4f7... (dependency of spike-0.3)
trying: global-variables-1.0.1.1 (dependency of spike-0.3)
trying: random-1.1 (dependency of spike-0.3)
trying: time-1.5.0.1/installed-c20... (dependency of random-1.1)
next goal: containers (dependency of spike-0.3)
rejecting: containers-0.5.6.2/installed-2de..., 0.5.6.3, 0.5.6.2, 0.5.6.1,
0.5.6.0, 0.5.5.1, 0.5.5.0, 0.5.4.0, 0.5.3.1, 0.5.3.0, 0.5.2.1, 0.5.2.0,
0.5.1.0, 0.5.0.0 (conflict: global-variables => containers>=0.3 && <0.5)
rejecting: containers-0.4.2.1 (conflict: time =>
deepseq==1.4.1.1/installed-8fb..., containers => deepseq>=1.2 && <1.4)
rejecting: containers-0.4.2.0 (conflict: time =>
deepseq==1.4.1.1/installed-8fb..., containers => deepseq>=1.2 && <1.3)
rejecting: containers-0.4.1.0 (conflict: base==4.8.1.0/installed-4f7...,
containers => base>=4.2 && <4.8)
rejecting: containers-0.4.0.0, 0.3.0.0 (conflict:
base==4.8.1.0/installed-4f7..., containers => base>=4.2 && <4.7)
rejecting: containers-0.2.0.1, 0.2.0.0, 0.1.0.1, 0.1.0.0 (conflict:
global-variables => containers>=0.3 && <0.5)
Backjump limit reached (change with --max-backjumps).