these 4 derivations will be built:
  /nix/store/qlgk9l9w8g80ailj0zfymiradpd2xdb7-clan-runtime.drv
  /nix/store/4gvjn0wv72kib4p4j363fq5v44fz07im-clan-cli-source.drv
  /nix/store/mnd9aqw9hj2sgnycj0yhspx0ik5vmvl0-clan-cli.drv
  /nix/store/0nha2h8gkkkdb7mdr0ibm1sh1fbrnrxf-nix-shell.drv