these 3 derivations will be built:
  /nix/store/5slq2p7nyb14lfiyffihrl51vrxc7mrj-omp-18.8.3-cargo-vendor-vendor.drv
  /nix/store/dr2d5vd4lj78kklv521gdp5lp1fqjs4l-omp-18.8.3.drv
  /nix/store/j5604df4ic3mqak4dzgsdfnbxy3hzp66-check-omp.drv