Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: htar (user goal)
rejecting: htar-0.4.0.2, htar-0.4.0.1, htar-0.4, htar-0.3.1, htar-0.3
(constraint from user target requires ==0.1)
trying: htar-0.1
trying: base-4.9.0.0/installed-4.9... (dependency of htar-0.1)
next goal: tar (dependency of htar-0.1)
rejecting: tar-0.5.0.3, tar-0.5.0.2, tar-0.5.0.1, tar-0.5.0.0, tar-0.4.5.0,
tar-0.4.2.2, tar-0.4.2.1, tar-0.4.2.0, tar-0.4.1.0, tar-0.4.0.1, tar-0.4.0.0,
tar-0.3.2.0, tar-0.3.1.0, tar-0.3.0.0, tar-0.1.1.3, tar-0.1.1.1, tar-0.1.1
(conflict: htar => tar==0.1)
rejecting: tar-0.1 (conflict: base==4.9.0.0/installed-4.9..., tar => base>=2.0
&& <4)
rejecting: tar-0.4.4.0, tar-0.4.3.0 (conflict: htar => tar==0.1)
Dependency tree exhaustively searched.