[1 of 4] Processing ab-sigs
unit ab-sigs[B=<B>, A=<A>]
  [1 of 2] Compiling A[sig]           ( ab-sigs/A.hsig, nothing )
  [2 of 2] Compiling B[sig]           ( ab-sigs/B.hsig, nothing )
[2 of 4] Processing ab
unit ab[B=<B>]
- include ab-sigs[B=<B>, A=<A>] []
  [1 of 2] Compiling B[sig]           ( ab/B.hsig, nothing )
  [2 of 2] Compiling A                ( ab/A.hs, nothing )
[3 of 4] Processing ba
unit ba[A=<A>]
- include ab-sigs[B=<B>, A=<A>] []
  [1 of 2] Compiling A[sig]           ( ba/A.hsig, nothing )
  [2 of 2] Compiling B                ( ba/B.hs, nothing )
[4 of 4] Processing ab-rec
  Instantiating ab-rec

bkp22.bkp:19:1: error: cycles not supported