Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: gi-gsttag (user goal)
[__0] rejecting: gi-gsttag-1.0.22 (conflict: pkg-config package
gstreamer-tag-1.0-any, not found in the pkg-config database)
[__0] rejecting: gi-gsttag-1.0.21, gi-gsttag-1.0.20, gi-gsttag-1.0.19,
gi-gsttag-1.0.18, gi-gsttag-1.0.17, gi-gsttag-1.0.15, gi-gsttag-1.0.14,
gi-gsttag-1.0.13, gi-gsttag-1.0.12 (constraint from user target requires
==1.0.22)
[__0] fail (backjumping, conflict set: gi-gsttag)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-gsttag