this derivation will be built:
  /nix/store/ncilrcd2rw6k9lwy80agqv0g726mzy5w-repl-completion.drv
these 2 paths will be fetched (185.7 KiB download, 1.5 MiB unpacked):
  /nix/store/8mhq2lnjdyrw48mryi4d9ch2pwf8540p-expect-5.45.4
  /nix/store/wn3pxs0d7cz5jqskpvqs2f82dfww65ya-expect-5.45.4-dev