these 3 derivations will be built:
  /nix/store/1j15vrm8lfphsa2igddfhy2094736gdj-source.drv
  /nix/store/ldi4wvm0g6fxr77kcxhasqjrhswf4kky-bernstein-3.23.0.drv
  /nix/store/3l0csvcr27c3jbn3x1f11jp0nwipldx9-check-bernstein.drv