these 3 derivations will be built:
  /nix/store/2lqdqyx28daiaspsq877x692pl26n0b7-clan-cli-source.drv
  /nix/store/y6sfqwyj21zwdn4n8hbn3irxy7pllqrc-clan-cli.drv
  /nix/store/gqz1xs4z0kqbbq39yzp1lwa5hbdn8ga3-nix-shell.drv