Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: perdure (user goal)
rejecting: perdure-0.2.1, 0.2.0 (global constraint requires ==0.1.2)
trying: perdure-0.1.2
trying: base-4.7.0.1/installed-e4b... (dependency of perdure-0.1.2)
next goal: deepseq-th (dependency of perdure-0.1.2)
rejecting: deepseq-th-0.1.0.4 (conflict: base==4.7.0.1/installed-e4b...,
deepseq-th => base>=4.4 && <4.7)
rejecting: deepseq-th-0.1.0.3 (conflict: base==4.7.0.1/installed-e4b...,
deepseq-th => base>=4.4 && <4.6)
rejecting: deepseq-th-0.1.0.2, 0.1.0.1, 0.1.0.0, 0.0.0.0 (conflict: perdure =>
deepseq-th>=0.1.0.3)
Dependency tree exhaustively searched.