these 2 derivations will be built:
  /nix/store/xn2dk1cmjbjwf6d0g8xcmcw0li6zghix-docker-sbx-0.49.2.drv
  /nix/store/g3bwi7ynhr1f1mx8yhxsisp2w570l17i-check-docker-sbx.drv