Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: mkcabal (user goal)
rejecting: mkcabal-1.0.0, 0.4.2, 0.4.1.1 (global constraint requires ==0.4.1)
trying: mkcabal-0.4.1
trying: base-4.8.1.0/installed-4f7... (dependency of mkcabal-0.4.1)
next goal: pcre-light (dependency of mkcabal-0.4.1)
rejecting: pcre-light-0.4.0.4, 0.4.0.3, 0.4.0.2, 0.4.0.1, 0.4, 0.3.1.1, 0.3.1
(conflict: mkcabal => pcre-light==0.3)
trying: pcre-light-0.3
rejecting: pcre-light-0.3:-small_base (conflict:
base==4.8.1.0/installed-4f7..., pcre-light-0.3:small_base => base<3)
rejecting: pcre-light-0.3:+small_base (conflict:
base==4.8.1.0/installed-4f7..., pcre-light-0.3:small_base => base>=3 && <4.7)
Dependency tree exhaustively searched.