Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: gi-gsttag (user goal)
rejecting: gi-gsttag-1.0.15 (conflict: requires pkg-config package
gstreamer-tag-1.0-any, not found in the pkg-config database)
rejecting: gi-gsttag-1.0.14, gi-gsttag-1.0.13, gi-gsttag-1.0.12 (constraint
from user target requires ==1.0.15)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-gsttag