these 4 derivations will be built:
  /nix/store/fhphn0c45p5bpqa1qvla4kvjc2pqgfrp-clan-runtime.drv
  /nix/store/vbcmlncvl8dl63jb278qw8gxqqwwr5l1-clan-cli-source.drv
  /nix/store/9xdkmpyb4i3sbnab3hm23ykxkaf24azi-clan-cli.drv
  /nix/store/whwjfmcyrlp511xxkdmy95ldab0mhd90-nix-shell.drv