Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hzulip (user goal)
rejecting: hzulip-1.1.1.3, hzulip-1.1.1.2, hzulip-1.1.1.1, hzulip-1.1.1.0,
hzulip-1.1.0.5, hzulip-1.1.0.4 (constraint from user target requires
==1.1.0.3)
trying: hzulip-1.1.0.3
trying: base-4.9.0.0/installed-4.9... (dependency of hzulip-1.1.0.3)
trying: transformers-0.5.2.0/installed-0.5... (dependency of hzulip-1.1.0.3)
next goal: mtl (dependency of hzulip-1.1.0.3)
rejecting: mtl-2.2.1, mtl-2.2.0.1, mtl-2.2 (conflict: hzulip => mtl>=2.1 &&
<2.2)
rejecting: mtl-2.1.3.1, mtl-2.1.2 (conflict:
transformers==0.5.2.0/installed-0.5..., mtl => transformers==0.3.*)
rejecting: mtl-2.1.1, mtl-2.1 (conflict: base==4.9.0.0/installed-4.9..., mtl
=> base<4.6)
rejecting: mtl-2.0.1.1, mtl-2.0.1.0, mtl-2.0.0.0, mtl-1.1.1.1, mtl-1.1.1.0,
mtl-1.1.0.2, mtl-1.1.0.1, mtl-1.1.0.0, mtl-1.0 (conflict: hzulip => mtl>=2.1
&& <2.2)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).