Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: harfbuzz-pure (user goal)
[__0] rejecting: harfbuzz-pure-1.0.3.1 (constraint from user target requires
==1.0.3.0)
[__0] rejecting: harfbuzz-pure-1.0.3.0 (conflict: pkg-config package
harfbuzz>=3.3, not found in the pkg-config database)
[__0] rejecting: harfbuzz-pure-1.0.2.0, harfbuzz-pure-1.0.1.1,
harfbuzz-pure-1.0.1.0, harfbuzz-pure-1.0.0.1, harfbuzz-pure-1.0.0.0,
harfbuzz-pure-0.1.0.1, harfbuzz-pure-0.1.0.0 (constraint from user target
requires ==1.0.3.0)
[__0] fail (backjumping, conflict set: harfbuzz-pure)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: harfbuzz-pure