these 4 derivations will be built:
  /nix/store/rg2bdifimjz2p32nqbrd4lxrhc21rn69-clan-runtime.drv
  /nix/store/jacfh1im28w1j917zqp8iyyj7411ir62-clan-cli-source.drv
  /nix/store/2v3q7x4j6cqfsw00wp6w5c0mj5f132nd-clan-cli.drv
  /nix/store/9nkzn74x4xjvpdadq1fy17v6n6k2xr99-nix-shell.drv