these 4 derivations will be built:
  /nix/store/jyf5vr7pivwa18x1qk31qc3c50fbcmwi-clan-cli-source.drv
  /nix/store/kyfdsqkvp5v84wi5x5ljl4kmimlfvvg4-clan-cli.drv
  /nix/store/y48z66lbyx5s8wkfqhmkjxldx90cw29i-closure-info.drv
  /nix/store/4fv02immdk2y11nh1l4sl80sk9xv4av3-check-vars.drv