this derivation will be built:
  /nix/store/2mllwy7mkgillcrizp6x6li8rhpc1x74-nix-shell.drv
this path will be fetched (0.0 KiB download, 20.3 MiB unpacked):
  /nix/store/yklaiw8h7l6diz5pqy3gwcfymi5c5fny-slack-cli-4.6.0