Resolving dependencies...
cabal: Could not resolve dependencies:
trying: llvm-ffi-3.0.0.2 (dependency of llvm-tf-3.0.3.1.2)
trying: llvm-ffi-3.0.0.2:-buildtools
rejecting: llvm-ffi-3.0.0.2:+specificpkgconfig (conflict: requires pkg-config
package llvm-3.0==3.0, not found in the pkg-config database)
rejecting: llvm-ffi-3.0.0.2:-specificpkgconfig (conflict: requires pkg-config
package llvm==3.0, not found in the pkg-config database)
Dependency tree exhaustively searched.