these 5 derivations will be built:
  /nix/store/82jckmf43qyxir1yd0rnlgm15qkwl0v1-nix-copy-closure.drv
  /nix/store/8aiwzylpx480r1zb1yqm3vpvlr9p7wrh-ssh.drv
  /nix/store/gf2xx7i509glk0557j67blpa37ng2klx-remote-commands.drv
  /nix/store/cyksjp6sv84c016vyzshvac74sxar52r-runtime-references.drv
  /nix/store/8m37b348mgfs7kwnsalw7v2qwpv6c0wv-effects-lib-ssh.drv
this path will be fetched (73.6 KiB download, 273.1 KiB unpacked):
  /nix/store/lxra5fkapsdbdjqi6wa205s7vmqh1vxb-hello-2.12.3