this derivation will be built:
  /nix/store/0dsg8zaavz6q0gl8i147ym92w4rl2428-nix-shell.drv
this path will be fetched (2.0 MiB download, 4.9 MiB unpacked):
  /nix/store/7myigx4c7gvdmy66z82v4gsca1y6rcsg-just-1.58.0