these 3 derivations will be built:
  /nix/store/mrw7wyhzlxjdl95mxpm8vk2hxrrjbqc0-clan-cli-source.drv
  /nix/store/5idjacx4nf2vqcly9mynycn2vm68icm4-clan-cli.drv
  /nix/store/m8hhmk137bdm3wmpsl6c7sbzk9y6zd04-nix-shell.drv