these 2 derivations will be built:
  /nix/store/m86kqc93y7f6pl4q5q6ymn3nqp0zpwqs-cc-sdd-3.1.0.drv
  /nix/store/dnfsl7vngnrjjmp7z9qy7l7541afmhbl-check-cc-sdd.drv