these 3 derivations will be built:
  /nix/store/hfvkbw9g9i0jb6l3mx25bsvccgxagpiv-omp-18.7.0-cargo-vendor-vendor.drv
  /nix/store/s1v332m1gzdv4k8kyl79429sgcd8jwzv-omp-18.7.0.drv
  /nix/store/jcj38q90xf80zbcbzzh4kdd4b1x8mclb-check-omp.drv