these 3 derivations will be built:
  /nix/store/gzqxxf89vfv9w702g5d99ga4adpdssva-omp-18.8.6-cargo-vendor-vendor.drv
  /nix/store/9wbnfjp7i1dr7cbgk88i3h9h9awggmfz-omp-18.8.6.drv
  /nix/store/9f12x1n7p9x7xvsf6dq679515prcnvnk-check-omp.drv