these 3 derivations will be built:
  /nix/store/mrpf87salnfkyj8vrysv2dhx41xia0rx-clan-cli-source.drv
  /nix/store/1dmfi1pw4dign3zqi2jw2smx3kijj2wq-clan-cli.drv
  /nix/store/bg5b79f0vxsa2jjid36pjsrr19cp1fcs-nix-shell.drv