Tobias Geerinckx-Rice via Guix-patches via writes:

>
> …‘1’ means the project has released version 1 prior to this commit, or
> at least regards this commit as part of the ‘1’ series. I didn't spot
> any version number on the home page, NEWS file, git tags, …
>
> If there is no ‘1’ release, use ‘0.0.0’.
>
> The second field (REVISION) should be ‘0’, since this is the first
> *Guix* revision of this package.  The idea is that you increment the
> revision each time you change COMMIT, so Guix knows which commit is
> newer and can ‘guix package -u’ properly.
>
> Since the 2 should be updated together, bind them together:
>
>  (let ((commit "f00")
>        (revision "0")) …


Slight change to my follow up patch, version should be 0.1.0.