Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: vty (user goal)
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, 4.7.5, 4.7.4, 4.7.3, 4.7.2 (global constraint requires ==4.7.1)
trying: vty-4.7.1
trying: string-qq-0.0.2 (dependency of vty-4.7.1)
trying: template-haskell-2.10.0.0/installed-90e... (dependency of
string-qq-0.0.2)
next goal: pretty (dependency of template-haskell-2.10.0.0/installed-90e...)
rejecting: pretty-1.1.2.0/installed-293... (conflict: pretty =>
deepseq==1.4.1.1/installed-8fb..., vty => deepseq>=1.1 && <1.4)
rejecting: pretty-1.1.3.2, 1.1.3.1, 1.1.2.1, 1.1.2.0, 1.1.1.3, 1.1.1.2,
1.1.1.1, 1.1.1.0, 1.1.0.0, 1.0.1.2, 1.0.1.1, 1.0.1.0, 1.0.0.0 (conflict:
template-haskell => pretty==1.1.2.0/installed-293...)
Dependency tree exhaustively searched.