these 4 derivations will be built:
  /nix/store/qpwpvf97yz7cbh45zv8vfm6hi7p159aw-source.drv
  /nix/store/dsnlpmn37swbhj8z5qzsxbdb6dzgp088-omp-18.2.4-cargo-vendor-vendor-staging.drv
  /nix/store/grccg5627qscm0h3gwwbxdgd7qhvjprv-omp-18.2.4-cargo-vendor-vendor.drv
  /nix/store/1nc63fjlf4v72viwji7n4da0pxlgvwb2-omp-18.2.4.drv
this path will be fetched (7.4 KiB download, 20.6 KiB unpacked):
  /nix/store/ixa399kfydq2jk27vglyr21vfr6dy6hx-nix-prefetch-git-26.11