these 3 derivations will be built:
  /nix/store/d528zjafdlphxbz812834xdg982c401y-omp-18.4.9-cargo-vendor-vendor.drv
  /nix/store/ral0pqqdk0d63axy7g7589jrsx7xdp5f-omp-18.4.9.drv
  /nix/store/679m81k0h8bbbvrg2ghs1xk3wk8ckcqz-check-omp.drv