Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: lapack-ffi (user goal)
rejecting: lapack-ffi-0.0.1 (conflict: requires pkg-config package lapack-any,
not found in the pkg-config database)
rejecting: lapack-ffi-0.0 (constraint from user target requires ==0.0.1)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: lapack-ffi