Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: tkhs (user goal)
rejecting: tkhs-0.3.0, 0.2.4, 0.2.3, 0.2.2 (global constraint requires
==0.2.1)
trying: tkhs-0.2.1
trying: utf8-string-1.0.1.1 (dependency of tkhs-0.2.1)
trying: bytestring-0.10.6.0/installed-236... (dependency of
utf8-string-1.0.1.1)
next goal: vty (dependency of tkhs-0.2.1)
rejecting: vty-5.4.0, 5.3.1, 5.3, 5.2.11, 5.2.10, 5.2.9, 5.2.8, 5.2.7, 5.2.6,
5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.1.4, 5.1.3, 5.1.1, 5.1.0, 5.0.2,
5.0.1, 5.0.0 (conflict: tkhs => vty==4.*)
rejecting: vty-4.7.5, 4.7.4, 4.7.3, 4.7.2, 4.7.1, 4.7.0.20, 4.7.0.18
(conflict: bytestring => deepseq==1.4.1.1/installed-8fb..., vty =>
deepseq>=1.1 && <1.4)
rejecting: vty-4.7.0.14, 4.7.0.12, 4.7.0.10, 4.7.0.8, 4.7.0.6, 4.7.0.4,
4.7.0.0, 4.6.0.6, 4.6.0.4, 4.6.0.2, 4.6.0.1, 4.4.0.0.1, 4.4.0.0, 4.2.1.0,
4.0.0.1, 4.0.0 (conflict: utf8-string==1.0.1.1, vty => utf8-string>=0.3 &&
<0.4)
rejecting: vty-3.1.8.4, 3.1.8.2, 3.1.8, 3.1.6, 3.1.4, 3.1.2, 3.1.0, 3.0.4,
3.0.2, 3.0.1, 3.0.0 (conflict: tkhs => vty==4.*)
Backjump limit reached (change with --max-backjumps).