this derivation will be built:
  /nix/store/q9bf5zwibygbfm2q087s360yqk758ccp-nix-shell.drv
this path will be fetched (1.9 MiB download, 4.8 MiB unpacked):
  /nix/store/ank1rvxdg1r21v885zm7k8q2sqx285x5-just-1.58.0