Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: threadscope (user goal)
rejecting: threadscope-0.2.7, 0.2.6, 0.2.5, 0.2.4, 0.2.3, 0.2.2, 0.2.1, 0.2.0,
0.1.3, 0.1.2, 0.1.1 (global constraint requires ==0.1)
trying: threadscope-0.1
trying: base-4.7.0.1/installed-e4b... (dependency of threadscope-0.1)
next goal: containers (dependency of threadscope-0.1)
rejecting: containers-0.5.5.1/installed-23e..., 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, 0.4.2.1, 0.4.2.0, 0.4.1.0, 0.4.0.0, 0.3.0.0 (conflict:
threadscope => containers>=0.2 && <0.3)
rejecting: containers-0.2.0.1, 0.2.0.0 (conflict:
base==4.7.0.1/installed-e4b..., containers => base<4.7)
rejecting: containers-0.1.0.1, 0.1.0.0 (conflict: threadscope =>
containers>=0.2 && <0.3)
Dependency tree exhaustively searched.