Resolving dependencies...
cabal: Could not resolve dependencies:
trying: forml-0.2 (user goal)
trying: base-4.9.0.0/installed-4.9... (dependency of forml-0.2)
next goal: zlib (dependency of forml-0.2)
rejecting: zlib-0.6.1.2, zlib-0.6.1.1, zlib-0.6.1.0, zlib-0.6.0.2,
zlib-0.6.0.1, zlib-0.6.0.0, zlib-0.5.4.2, zlib-0.5.4.1 (conflict: forml =>
zlib==0.5.4.0)
rejecting: zlib-0.5.4.0 (conflict: base==4.9.0.0/installed-4.9..., zlib =>
base>=3 && <4.8)
rejecting: zlib-0.5.3.3, zlib-0.5.3.2, zlib-0.5.3.1, zlib-0.5.2.0,
zlib-0.5.0.0, zlib-0.4.0.4, zlib-0.4.0.3, zlib-0.4.0.2, zlib-0.4.0.1,
zlib-0.4, zlib-0.3, zlib-0.2 (conflict: forml => zlib==0.5.4.0)
Dependency tree exhaustively searched.