this derivation will be built:
  /nix/store/0nsy0cww5i01ydllpak90b0h1wvjz173-nix-shell.drv
this path will be fetched (2.0 MiB download, 4.9 MiB unpacked):
  /nix/store/kcyk3qjxrxbqv110yz408277m1i55faf-just-1.58.0