Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: cmdargs-browser (user goal)
rejecting: cmdargs-browser-0.1.3 (global constraint requires ==0.1.2)
trying: cmdargs-browser-0.1.2
trying: wai-handler-launch-3.0.0.4 (dependency of cmdargs-browser-0.1.2)
trying: warp-3.1.8 (dependency of wai-handler-launch-3.0.0.4)
trying: http2-1.2.0 (dependency of warp-3.1.8)
trying: aeson-0.10.0.0 (dependency of http2-1.2.0)
trying: mtl-2.2.1 (dependency of aeson-0.10.0.0)
next goal: transformers (dependency of cmdargs-browser-0.1.2)
rejecting: transformers-0.4.2.0/installed-21d..., 0.4.3.0, 0.4.2.0, 0.4.1.0
(conflict: cmdargs-browser => transformers>=0.2 && <0.4)
rejecting: transformers-0.3.0.0, 0.2.2.1, 0.2.2.0 (conflict: mtl =>
transformers==0.4.*)
rejecting: transformers-0.2.1.0, 0.2.0.0 (conflict: wai-handler-launch =>
transformers>=0.2.2)
rejecting: transformers-0.1.4.0, 0.1.3.0, 0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.1.0,
0.0.0.0, 0.4.0.0 (conflict: cmdargs-browser => transformers>=0.2 && <0.4)
Backjump limit reached (change with --max-backjumps).