Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: pisigma (user goal)
rejecting: pisigma-0.2.1, pisigma-0.2 (constraint from user target requires
==0.1.0.3)
trying: pisigma-0.1.0.3
trying: base-4.9.0.0/installed-4.9... (dependency of pisigma-0.1.0.3)
next goal: text (dependency of pisigma-0.1.0.3)
rejecting: text-1.2.2.1, text-1.2.2.0, text-1.2.1.3, text-1.2.1.2,
text-1.2.1.1, text-1.2.1.0, text-1.2.0.6, text-1.2.0.5, text-1.2.0.4,
text-1.2.0.3, text-1.2.0.2, text-1.2.0.0, text-1.1.1.4, text-1.1.1.3,
text-1.1.1.2, text-1.1.1.1, text-1.1.1.0, text-1.1.0.1, text-1.1.0.0,
text-1.0.0.1, text-1.0.0.0, text-0.11.3.1, text-0.11.3.0, text-0.11.2.3,
text-0.11.2.2, text-0.11.2.1, text-0.11.2.0, text-0.11.1.13, text-0.11.1.12,
text-0.11.1.11, text-0.11.1.10, text-0.11.1.9, text-0.11.1.8, text-0.11.1.7,
text-0.11.1.6, text-0.11.1.5, text-0.11.1.3, text-0.11.1.2, text-0.11.1.1,
text-0.11.1.0, text-0.11.0.8, text-0.11.0.7, text-0.11.0.6, text-0.11.0.5,
text-0.11.0.4, text-0.11.0.3, text-0.11.0.2, text-0.11.0.1, text-0.11.0.0,
text-0.10.0.2, text-0.10.0.1, text-0.10.0.0, text-0.9.1.0, text-0.9.0.1,
text-0.9.0.0, text-0.8.1.0, text-0.8.0.0, text-0.7.2.1, text-0.7.1.0,
text-0.7.0.1, text-0.7, text-0.6 (conflict: pisigma => text>=0.5 && <0.6)
rejecting: text-0.5 (conflict: base==4.9.0.0/installed-4.9..., text =>
base<4.3)
rejecting: text-0.4, text-0.3, text-0.2, text-0.1 (conflict: pisigma =>
text>=0.5 && <0.6)
Dependency tree exhaustively searched.