4 Preprocessing library for p-1.0..
5 Building library for p-1.0..
7 Installing library in <PATH>
9 Registering library for p-1.0..
11 Resolving dependencies...
12 Error: cabal: Could not resolve dependencies:
13 [__0] trying: q-1.0 (user goal)
14 [__1] unknown package: p (dependency of q)
15 [__1] fail (backjumping, conflict set: p, q)
16 After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: q (2), p (1)