[istallation/manual] dub --single main.d # command does not work, --single unrecognized option

[ubuntu-repo]

The manual (README) says:

[Usage]

1. ...
2. ...
3. Build and run by running: dub --single main.d

ERROR:
Unknown command line flags: --single

[jacob-carlborg]

It's working fine for me with Dub version 1.7.1 and 1.2.1. Which version are you using?