these 2 derivations will be built:
  /nix/store/1v6jq2hlq667xwpx938nyknx64wyvchg-source.drv
  /nix/store/qawzvybjfi62835fcnqw9j5zffp9g2ny-nx2elf-unstable-2021-11-21.drv
this path will be fetched (231.6 KiB download, 1.6 MiB unpacked):
  /nix/store/d6gqi9ggnfzp3kjnfgziv8755j3q2iiv-source