these 3 derivations will be built:
  /nix/store/x1bifp4ik7s32j8c14v2qz5haw7pcvm2-clan-cli-source.drv
  /nix/store/j531s522nz67ar7ipn5z2l3qy4yfbm8b-clan-cli.drv
  /nix/store/dcw6zw23559is4pbb522x7sg54iy1nmq-nix-shell.drv