Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: gi-poppler (user goal)
[__0] rejecting: gi-poppler-0.18.26 (conflict: pkg-config package
poppler-glib==0.18 || >0.18, not found in the pkg-config database)
[__0] rejecting: gi-poppler-0.18.25, gi-poppler-0.18.24, gi-poppler-0.18.23,
gi-poppler-0.18.22, gi-poppler-0.18.21, gi-poppler-0.18.20,
gi-poppler-0.18.19, gi-poppler-0.18.18, gi-poppler-0.18.17,
gi-poppler-0.18.15, gi-poppler-0.18.14, gi-poppler-0.18.13,
gi-poppler-0.18.12, gi-poppler-0.18.11, gi-poppler-0.18.10, gi-poppler-0.18.9,
gi-poppler-0.18.8, gi-poppler-0.18.7, gi-poppler-0.18.6, gi-poppler-0.18.5,
gi-poppler-0.18.4, gi-poppler-0.18.3, gi-poppler-0.18.2, gi-poppler-0.18.1,
gi-poppler-0.0.34.15, gi-poppler-0.0.34.14, gi-poppler-0.0.34.13,
gi-poppler-0.0.34.12, gi-poppler-0.0.30.12 (constraint from user target
requires ==0.18.26)
[__0] fail (backjumping, conflict set: gi-poppler)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-poppler