these 4 derivations will be built:
  /nix/store/vklg83h22975q649jl4893c2z4svw9c8-source.drv
  /nix/store/4jlpmc5gy2y8kdi29x6nydvj2n77909w-omp-18.0.6-cargo-vendor-vendor-staging.drv
  /nix/store/mkymlndffa9dbmqr7f1cd3bnqyh8l2p1-omp-18.0.6-cargo-vendor-vendor.drv
  /nix/store/c9ccmv66c08m4q627pjyg9xly6nsizr0-omp-18.0.6.drv