these 2 derivations will be built:
  /nix/store/mmj6lq5c7qm6qcbm23a1801swssz1iav-beads-rust-0.5.2-vendor.drv
  /nix/store/d84a9a47fq1q2r4q6dyka1kkn17y74an-beads-rust-0.5.2.drv