This is a very valid point. I think it would not mean breaking change. We already have a "rule" that changing/upgrading dependencies is not a breaking change on it's own. We might choose a different route for Python and K8S being rather "big" dependencies and only drop them with the major version upgrade of Airflow, but I honestly think we should treat it the same way.
Both K8S and Python have shifted their release schedule to much faster gears than they used to, and they make all the effort to make them backwards compatible with Semver - still maintaining a reasonably long support schedule. I think if we drop support for all Python 3.* series or K8S 1.* series - yes that would be a backwards-incompatible change. But since the users can very easily now migrate to python 3.n with predictable 3.5 years of support, I think we should simply follow the suite. For example if we decide to support python 3.6 beyond Dec 2021 it means that there will be no critical security fixes released any more then - and it means that we would have to somehow monitor and mitigate them. I think. I think following the schedule of Python/K8S would help the community as a whole. WDYT ? Others? J. On Wed, Apr 14, 2021 at 2:47 PM Ash Berlin-Taylor <[email protected]> wrote: > I guess it wasn't quite clear what "finish" means, particularly how it > interacts with SemVer and Airflow releases. > > Lets take Python 3.6 as a concrete example -- it is end of life at the end > of this year, 23rd Dec, 202 1 <https://endoflife.date/python> > > Does dropping support for Python 3.6, even if it is not supported count as > a breaking change to Airflow, needing a 3.0? > > -ash > > On Tue, 13 Apr, 2021 at 19:44, Jarek Potiuk <[email protected]> wrote: > > On Tue, Apr 13, 2021 at 2:35 PM Ash Berlin-Taylor <[email protected]> wrote: > >> This sounds good to me. >> >> > The next question this leads me to is: when do we _drop_ support for a >> version of Python or Kubernetes? >> > > I believe that's the first point in the proposal ("finish" = "drop"). If > that's not clear, I will change it to drop > Or maybe you mean some other form of "dropping support? > > 1. We finish support for Python and K8S versions when they reach EOL (For >> Python >> 3.6 it means that we will remove it from being supported on 23.12.2021, >> for K8S >> the 1.19 version supports end in September 2021). >> >> > -- > +48 660 796 129 > > -- +48 660 796 129
