this derivation will be built:
  /nix/store/qib2q42d75yrm420gy1krchhqw4sdfqd-nix-shell.drv
this path will be fetched (0.0 KiB download, 3.9 MiB unpacked):
  /nix/store/cla8dlb62i64s1a0qj0j9kbavj47lksp-clan-cli