this derivation will be built:
  /nix/store/dxbqaj9gms7ly310f0vxdhb2msjcfhcm-nix-shell.drv
this path will be fetched (2.2 MiB download, 5.7 MiB unpacked):
  /nix/store/4q0ksvaggh0zb50jmff9vr929b0z3r6f-just-1.55.1