these 3 derivations will be built:
  /nix/store/qmz44a10l0qbxwwjvas7znzvrmzn5nxc-clan-cli-source.drv
  /nix/store/ppd48afg5gxbyncdmcw3m6q0nq46rncx-clan-cli.drv
  /nix/store/j0l48v27syxa4vxcln6i4asd1ff46il1-nix-shell.drv