these 2 derivations will be built:
  /nix/store/kwxr25zgxzpcb1jkwds4dk1dm3ll2qls-beads-rust-0.5.7-vendor.drv
  /nix/store/nsjmw914f5mzzjcssl9whlxv2zzp13yr-beads-rust-0.5.7.drv