these 2 derivations will be built:
  /nix/store/nzyvxhz0avwkr931yg05767qmwj1wzbh-mardi-gras-0.33.0.drv
  /nix/store/hnl87bi9d91k77qkd5w534lsafibwyzv-check-mardi-gras.drv