[1 of 4] Processing sig
  [1 of 1] Compiling A[sig]           ( sig/A.hsig, nothing )
[2 of 4] Processing blub
  [1 of 2] Compiling A[sig]           ( blub/A.hsig, nothing )
  [2 of 2] Compiling M                ( blub/M.hs, nothing )
[3 of 4] Processing impl
  Instantiating impl
  [1 of 1] Compiling A                ( impl/A.hs, bkp43.out/impl/A.o )
[4 of 4] Processing all
  Instantiating all
  [1 of 1] Including blub[A=impl:A]
    Instantiating blub[A=impl:A]
    [1 of 2] Compiling A[sig]           ( blub/A.hsig, bkp43.out/blub/blub-EMBMWyCjWt1EWXmIjSqmRG/A.o )
    [2 of 2] Compiling M                ( blub/M.hs, bkp43.out/blub/blub-EMBMWyCjWt1EWXmIjSqmRG/M.o )