these 2 paths will be fetched (2.0 MiB download, 4.9 MiB unpacked):
  /nix/store/2y1l8ipy3yjqsvvbdnvvwycr817in21n-just-1.58.0
  /nix/store/v08whib549mw16cmgfadqpdg7wbviybs-nix-shell