[1 of 2] Processing p
  [1 of 2] Compiling H[sig]           ( p/H.hsig, nothing )
  [2 of 2] Compiling A                ( p/A.hs, nothing )
[2 of 2] Processing q
  [1 of 2] Compiling H2[sig]          ( q/H2.hsig, nothing )
  [2 of 2] Compiling B                ( q/B.hs, nothing )