Thanks Jarek. That looks like a nice improvement for sure.

> and I guess many people just cancelled

That feels like a personal attack haha!

Thanks & Regards,
Amogh Desai


On Tue, Oct 21, 2025 at 1:14 PM Jarek Potiuk <[email protected]> wrote:

> Also another - related QOL improvement/suggestion. I noticed that often
> when I push my change to my fork, I have many more files detected with
> `pre-push` enabled. This is because often `main` of my fork is not synced
> with the main of Airflow.
>
> The way how I solved that I created a small alias (with the help of `gh`)
> to sync my fork (origin is the one I use for my private fork)
>
> ```
> alias sync-repo='gh repo sync potiuk/airflow --branch main && git fetch
> origin'
> ```
>
> On Sun, Oct 19, 2025 at 2:43 AM Jarek Potiuk <[email protected]> wrote:
>
> > Replace airflow mypy with one of those of course :)
> >
> >
> > On Sun, Oct 19, 2025 at 2:42 AM Jarek Potiuk <[email protected]> wrote:
> >
> >> Oh absolutely. At last PyCon I met the Pyrefly team and we even ran it
> >> together on Airflow, and of course we know the team at Astral and ty.
> The
> >> issue at that time was that neither was close to handle Airflow (Pyrefly
> >> out of the box was >10 thousands issues) and ty was very early (stil is)
> >> but mid-term goal is to replace airflow with one of those.
> >>
> >> One of the problems we have is that some of our type-checking depends on
> >> custom mypy plugins and none of those has any support for it (did not
> check
> >> zuban -but it seems one-man show, which is a bit worrying for such a
> >> complex thing like Python typechecker).
> >>
> >> But yeah. If someone would like to give it a shot and see how far we are
> >> and maybe lead the effort of switching to one of those... Absolutely :)
> >>
> >> J.
> >>
> >> On Sun, Oct 19, 2025 at 2:34 AM Dev iL <[email protected]> wrote:
> >>
> >>> Thanks Jarek, I know this will definitely make a big difference for me!
> >>>
> >>> It might be a good opportunity to recommend to those of us who want
> >>> dev-time type checking to look into Astral's ty (
> >>> https://github.com/astral-sh/ty), Meta's pyrefly (
> >>> https://github.com/facebook/pyrefly), or David Halter's zuban (
> >>> https://github.com/zubanls/zuban/) - all of which are written in Rust
> >>> and
> >>> are much faster than mypy.
> >>>
> >>> On Sat, 18 Oct 2025, 23:13 Jarek Potiuk, <[email protected]> wrote:
> >>>
> >>> > Hello Everyone,
> >>> >
> >>> > I just merged something that might turn into quite a  QOL improvement
> >>> for
> >>> > all contributors (it looks like a significant QOL improvement for my
> >>> > workflows at least): https://github.com/apache/airflow/pull/56829
> >>> >
> >>> > This PR moves `mypy` checks to the "pre-push" stage of prek hoos from
> >>> > "pre-commit". You might want to run `prek install --refresh` now. to
> >>> take
> >>> > advantage of it. And follow up with `prek install --hook-stage
> >>> pre-push` to
> >>> > complete it (opt-in).
> >>> >
> >>> > I guess a number of people refrained from `prek install` so far
> because
> >>> > `mypy` checks were generally slow and required `breeze ci-image build
> >>> > --python 3.10` to be run not only once but also kept up to date.
> While
> >>> we
> >>> > have also other hooks that require `ci-image` - mypy is one that was
> >>> > triggered by pretty much any python file change - and I guess many
> >>> people
> >>> > just cancelled it or even disabled prek auto-hooks because of the
> >>> waiting
> >>> > time at commit time.
> >>> >
> >>> > With this change - mypy hooks are moved to `pre-push` stage - this
> >>> stage is
> >>> > not enabled when you run `prek install`, you need to explicitly
> enable
> >>> it
> >>> > by `prek install --hook-type pre-push`. So you might opt-in to it (I
> >>> did)
> >>> > while not impacting regular pre-commit stage hooks.
> >>> >
> >>> > What it really means for contributor's workflows:
> >>> >
> >>> > * If you did `prek install`, the `git commit` operation should be
> >>> faster
> >>> > now and will not run mypy checks, If you did not, good idea is to run
> >>> it
> >>> > now. I highly recommend doing so. Lots of things are auto-fixed when
> >>> you do
> >>> > and you save precious push -> fix -> push cycle.
> >>> >
> >>> > * if you did (or will do) `prek install --hook-type pre-push` - all
> >>> > pre-commit and mypy hooks will run at the "git push" time - but this
> is
> >>> > more opt-in now, You can always do `git push --no-verify` as with
> >>> commit to
> >>> > skip that step though
> >>> >
> >>> > * if you did not run `prek install` at all beforr, but keep on
> running
> >>> > `prek` manually, this will also speed up plain `prek` execution. The
> >>> > default for `prek` is to run `pre-comit` hook stage - so if you run
> >>> `prek`
> >>> > locally - it will run all the checks for your staged changes - but
> not
> >>> mypy
> >>> > any more. You will need to run `prek run --hook-stage pre-push` to
> run
> >>> also
> >>> > mypy checks or run "manual" (full folder) version of checks `prek run
> >>> > --hook stage manual` (optionally wiht --all-files to force full
> check).
> >>> >
> >>> > I hope this will improve QOL and iteration speed for a number of
> >>> > contributors. Also If there are any ideas, problems, obstacles,
> >>> > difficulties that the current setup causes - discussing it in
> devlist,
> >>> > #contributors channel in slack is a good idea. Also the CI/DEV stuff
> >>> is not
> >>> > as hard, and many people already contribute - regularly or casually,
> >>> and I
> >>> > think all of us in the ci/dev team are happy to get feedback and
> ideas
> >>> from
> >>> > everyone contributing.
> >>> >
> >>> > Just a side comment - honestly I have no idea why I had not thought
> >>> about
> >>> > such setup before with `pre-push` hooks for mypy. It seems pretty
> >>> "obvious"
> >>> > when you ask now, I think it's partially caused by blind-spot
> developed
> >>> > from years of doing stuff "this way".
> >>> >
> >>> > So any fresh and out-of-the box ideas are more than welcome and we
> >>> have now
> >>> > a strong team of CI/Dev peoople who will hear it and respond. I think
> >>> in
> >>> > the CI/DEV team we like to do stuff our ways, but we like even more
> if
> >>> we
> >>> > can learn new tricks (speaking as an Old Dog).
> >>> >
> >>> > J.
> >>> >
> >>>
> >>
>

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