Culmination of a great bit of effort Jarek! Great job!! 👏
--
Regards,
Aritra Basu

On Fri, 21 Mar 2025, 7:42 pm Vincent Beck, <vincb...@apache.org> wrote:

> It has never been simpler to contribute to Airflow! Awesome job Jarek :)
>
> On 2025/03/21 13:50:05 Jarek Potiuk wrote:
> > Quick additional info - if you have in your repo a 'tests` or 'airflow'
> > folder remaining in the root of the repo - because you had some extra
> files
> > in those (for example generated node_modules)  - you should delete those
> > two directories. They are now unused and any files remaining there can
> and
> > *SHOULD* be deleted
> >
> > pt., 21 mar 2025, 14:28 użytkownik Jarek Potiuk <ja...@potiuk.com>
> napisał:
> >
> > > Ok. Now the "airflow-core" change is merged.
> > >
> > > Most important - *please rebase all your work now to the latest main*.
> > > Most PR will have conflicts and will require to be rebased anyway, but
> you
> > > will do you a favour if you do it manually first.
> > >
> > > Most likely those rebases will not work from the UI (they will just ask
> > > you to do the rebase manual way and give some hints on how this can be
> done.
> > >
> > > If you have apache airflow repo set as remote, (I have 'apache'
> remote),
> > > this can be usually done with:
> > >
> > > git fetch apache
> > > git rebase --onto apache/main $(git merge-base)
> > >
> > > Of course you have to check it manually - but this one should take all
> the
> > > commits you locally committed when you worked on your PR and
> 'transplant'
> > > them on top of the main branch.
> > >
> > > Few things to take care of after:
> > >
> > > 1. Make sure to rebuild your breeze image:
> > >
> > > breeze ci-image build
> > >
> > > 2. Make sure to resync your uv .venv including reinstallation:
> > >
> > > uv self upgrade
> > > uv sync --reinstall
> > >
> > > This one will update your venv and make sure it gets reinstalled with
> the
> > > new packages and all necessary deps for core airflow.
> > >
> > > There are quite a few other variants of such sync you should be able to
> > > use from now on:
> > >
> > > *Syncing airflow core minimum dev dependencies *
> > >
> > > uv sync
> > >
> > > This one will (after this change) install airflow core + all optional
> > > dependencies of airflow + all pre installed providers locally (and
> their
> > > dependencies) . Which means that it should allow to run all
> `airflow-core`
> > > tests. In theory - we still have few tests in airflow that might
> require
> > > other providers - to be cleaned up later. I will modify our CI later to
> > > also run using those limited, isolated environments to keep it this
> way in
> > > the future.
> > >
> > > You should be also able to run tests after regular activation of your
> venv
> > > (. ./.ven/bin/activate) and this is where your IDE should also have
> your
> > > python interpreter set - but uv has this cool `uv run` feature that
> allows
> > > you to run any command with automated activation of the venv:
> > >
> > > uv run pytest airflow-core/tests/....
> > >
> > >
> > > Also this should work out of the box:
> > >
> > > uv run airflow
> > >
> > > Go figure :)
> > >
> > >
> > > *Syncing dependencies for particular provider (and other dependent
> > > providers)*
> > >
> > > In the root of Airflow repo
> > >
> > > uv sync --package apache-airflow-providers-amazon
> > >
> > > This will sync amazon and all necessary development deps + all the
> > > providers that amazon depends on, this way you **should** be able to
> run
> > > all amazon provider tests (including transfers and all others) - what
> > > Dennis asked about at the call yesterday.
> > >
> > > Similarly you can run your tests this way
> > >
> > > uv run --package apache-airflow-providers-amazon pytest
> > > providers/amazon/unit/....
> > >
> > > *Alternative way of syncing provider dependencies *
> > >
> > > cd providers/amazon
> > > uv sync
> > >
> > > In this case you should be able to also do this:
> > >
> > > uv run pytest tests/unit/
> > >
> > > You soon will be able to do the same in `airflow-core` - once the tests
> > > that are expecting providers are removed from "airflow-core".
> > >
> > > cd airflow-core
> > > uv sync
> > >
> > > That's about it. All the rest should not change, Breeze tests,
> > > start-airflow etc. should work as usual.
> > >
> > >
> > > *Syncing all dependencies*
> > >
> > > This is equivalent to what `breeze` image has. I do not really
> recommend
> > > using it daily - syncing venv and swapping dependencies take
> sub-seconds
> > > with *uv, *also you should really treat the .venv in your repo as
> > > disposable and something you can easily resync any time.
> > >
> > > uv sync --all-packages
> > >
> > > This should allow you to run everything
> > >
> > > uv run --all-packages pytest ....
> > >
> > > Have fun!
> > >
> > > I am here and on slack `#contributors` later today. Shoot me with any
> > > questions and problems - happy to help (and encourage to help each
> other
> > > there too)
> > >
> > > *Bonus info*
> > >
> > > Actually you do not even need to do 'uv sync`. When you use uv run ,
> uv automatically
> > > runs uv sync under the hood (applying the --package switches as
> > > appropriate) and you get the latest env resynced automatically !
> > >
> > > Actually it's even more - you do not need python installed at all when
> you
> > > run `uv run` - uv will download and install (in seconds) the right
> version
> > > of Python for you automatically !
> > >
> > > So really:
> > >
> > > * Install uv
> > > * git clone
> > > * uv run pytest
> > >
> > > Is absolutely all you need to start contributing to Airflow.
> > >
> > > And I absolutely love it. This has been 4 years in the making and it's
> > > finally there!
> > >
> > > J
> > >
> > >
> > >
> > > On Thu, Mar 20, 2025 at 12:56 PM Jarek Potiuk <ja...@potiuk.com>
> wrote:
> > >
> > >> Ok. The PR https://github.com/apache/airflow/pull/47798 is "green"
> > >> (minus failing main issue with microsoft libraries solved separately
> and
> > >> randomly failing k8s tests that we are fighting with).
> > >>
> > >> I also added a description of the changes and happy to take any
> comments
> > >> and reviews. Would be great to get it merged **right** after the beta
> > >> release, to not disturb the release but also to get as many open PRs
> as
> > >> possible before the merge to minimize the number of conflicts YOU
> will have
> > >> to solve (at the expense of ME solving them :) ).
> > >>
> > >> I would like to have a small discussion afterwards on the exact way we
> > >> will treat `uv sync` and dependencies - including pre-installed
> providers,
> > >> but I would like to have this discussion later, I do not want to
> "muddy the
> > >> waters" right now. After we merge it and get some teething problems
> sorted
> > >> out, I will start a discussion thread about it. In short we can still
> > >> decide and move around thing such as - how many extras are installed
> by
> > >> default with `uv sync`, where we keep pre-installed providers
> definition -
> > >> is it in `airflow-core` or `airflow` and whether we want to keep with
> `pip`
> > >> way of doing things or can we entirely rely on `uv` for development
> (the
> > >> latter would simplify some of the hatch_build_* logic and allow us to
> have
> > >> more static dependency definition.
> > >>
> > >> But let's leave that discussion for next week. I will set the stage
> for
> > >> it today at the dev call, before I send the email with a more detailed
> > >> description of options and dependencies we have - but that should not
> stop
> > >> the "small :) " PR of mine to be merged:
> > >>
> > >> [image: image.png]
> > >>
> > >> J.
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> On Wed, Mar 19, 2025 at 9:12 PM Shahar Epstein <sha...@apache.org>
> wrote:
> > >>
> > >>> That's hardcore (pun intended) :D
> > >>> Great work and good luck merging it!
> > >>>
> > >>> On Fri, Mar 14, 2025 at 9:28 PM Jarek Potiuk <ja...@potiuk.com>
> wrote:
> > >>>
> > >>> > Hey here,
> > >>> >
> > >>> > I have a first (very draft and still requires a number of changes)
> PR
> > >>> for
> > >>> > the final step of big refactoring of our projects and using
> workspace.
> > >>> This
> > >>> > is to let you know about the changes coming (so please take a look
> at
> > >>> the
> > >>> > consequences to not be surprised).
> > >>> >
> > >>> > This is the most *scary* one -> moving all airflow code to
> > >>> > "airflow-core". And I have  draft version of it in
> > >>> > https://github.com/apache/airflow/pull/47798
> > >>> >
> > >>> > And it's not for the faint of heart :)
> > >>> >
> > >>> > [image: image.png]
> > >>> >
> > >>> > Note! It's not yet complete and unless you have some general
> comments,
> > >>> > it's likely not worth pointing to individual changes (yet) - it's
> more
> > >>> to
> > >>> > take a look at how things will look like eventually. I will work
> in the
> > >>> > next two days to get it to  reviewable state, and will keep it
> rebased
> > >>> and
> > >>> > running till mid next-week. I would like to have it ready
> (including
> > >>> the
> > >>> > release process) for the fourth (and final?) beta).
> > >>> >
> > >>> > Some resulting packaging changes:
> > >>> >
> > >>> > *FOR DEVELOPMENT:*
> > >>> >
> > >>> > * the pyproject.toml in the "root" of Airflow is still
> "apache-airflow"
> > >>> > package - but this will be an empty "meta" package that will
> install
> > >>> > together "apache-airflow-core", "apache-airflow-task-sdk" and
> > >>> optionally
> > >>> > providers (via extras)
> > >>> >
> > >>> > * the airflow-core is a new "apache-airflow-core" distribution,
> where
> > >>> only
> > >>> > airflow dependencies and airflow "core" extras are configured
> (smtp/
> > >>> otel,
> > >>> > pandas,rabbitmq etc) - I will likely cleanup some of those as well,
> > >>> some of
> > >>> > them are not needed. the nice thing is that this package has all
> > >>> > dependencies static (no hatch_build.py - everything is in
> > >>> pyproject.toml) -
> > >>> > which is pretty cool and allow us to better use dependabot for
> security
> > >>> > upgrades and notifications
> > >>> >
> > >>> > The airflow-core structure is pretty standard:
> > >>> >
> > >>> > airflow-core  # <- this is folder where airflow-core distribution
> is
> > >>> >             \- src
> > >>> >             |     \ airflow # <- This is airflow package
> > >>> >             |             \- api
> > >>> >             |             |- api_fastapi
> > >>> >             |             |- assets
> > >>> >             |             ...
> > >>> >             |- tests
> > >>> >             |       \- always
> > >>> >             |       |- api
> > >>> >             |       ...
> > >>> >             |- docs
> > >>> >             |
> > >>> >             |- pyproject.toml
> > >>> >             |- README.md
> > >>> >
> > >>> >
> > >>> > * for development - i will describe later the `pypi` way, but with
> `uv`
> > >>> > things get simpler and we have a few new options (Dennis - this is
> > >>> > continuation of discussion on the uv sync commands, so it's worth
> to
> > >>> > look closely:
> > >>> >
> > >>> > There are a number of ways you will be (eventually able to interact
> > >>> with
> > >>> > venv. After you checkout Airflow. You can change working directory
> and
> > >>> work
> > >>> > on different packages and depending on which directory you run `uv
> > >>> sync` -
> > >>> > uv (using workspace feature) will sync the **expected**
> dependencies.
> > >>> >
> > >>> > It's best to get used to the fact that instead of one airflow
> project
> > >>> we
> > >>> > will have ~100 pretty independent projects, and while you can
> continue
> > >>> > working with all of them as a single huge "workspace", it is
> generally
> > >>> way
> > >>> > more convenient to change directory to the "distribution" you are
> > >>> working
> > >>> > on currently and do everything there - with isolated set of
> > >>> dependencies
> > >>> > required only for that "distribution" - "airflow-core", "task-sdk",
> > >>> > "providers/amazon", "providers/mongo" - those are all separate
> > >>> > distributions, and more and more we will be able to treat them as
> > >>> > independent projects (but we will conveniently keep the option to
> > >>> develop
> > >>> > and run tests in a joined "workspace" environment at the top of the
> > >>> project
> > >>> > where we can install and test everything together - that's a bit
> of `uv
> > >>> > workspace` magic in play.
> > >>> >
> > >>> > Here are typical patterns:
> > >>> >
> > >>> > 1) Installing all development dependencies for everything (I.e
> complete
> > >>> > environment like in breeze)  -- allows to run all tests for all
> > >>> airflow and
> > >>> > all providers
> > >>> >
> > >>> > cd .
> > >>> > uv sync --all-packages
> > >>> >
> > >>> > 2) installing just airflow core with required dependencies (ready
> for
> > >>> most
> > >>> > core tests)
> > >>> >
> > >>> > cd airflow-core
> > >>> > uv sync
> > >>> >
> > >>> > 3) installing airflow core with optional dependencies (should
> allow to
> > >>> run
> > >>> > all core tests - including for the optional core features such as
> otel
> > >>> etc).
> > >>> >
> > >>> > cd airflow-core
> > >>> > uv sync --all-extras
> > >>> >
> > >>> > 4) installing individual provider dependencies (say amazon) - this
> > >>> allows
> > >>> > to run all tests of the provider you are working on - including
> > >>> installing
> > >>> > all dependencies from cross-provider dependencies (i.e. if you have
> > >>> google
> > >>> > tests in amazon provider, it will also install necessary google
> > >>> > dependencies).
> > >>> >
> > >>> > cd providers/amazon
> > >>> > uv sync
> > >>> >
> > >>> > Generally speaking - "airflow-core" will become (eventually) a
> truly
> > >>> > airflow-only distribution. It will have a few dependencies to
> > >>> "standard"
> > >>> > and "fab" providers - but I hope we will be able to get rid of
> those
> > >>> during
> > >>> > the resulting cleanup.
> > >>> >
> > >>> > The IDE (IntelliJ) setting will just require "airflow-core/src" and
> > >>> > "airflow-core/tests" to be source/test roots as usual for other
> > >>> > distributions.
> > >>> >
> > >>> > I will update the docs after I complete the PR, there are some
> small
> > >>> > variations on when to install which extras and I will play a bit to
> > >>> get to
> > >>> > the best developer experience and least surprises.
> > >>> >
> > >>> > *FOR USERS*
> > >>> >
> > >>> > For "installable" airflow (i.e. user's experience) - the changes
> will
> > >>> be
> > >>> > pretty much 100% transparent. When user will install
> "apache-airflow"
> > >>> or
> > >>> > "apache-airflow[google]" - things will work as they did before -
> only
> > >>> > instead of one "apache-airflow" distribution, they will have
> > >>> > "apache-airflow", "apache-airflow-core" and
> "apache-airflow-task-sdk"
> > >>> > installed.
> > >>> >
> > >>> > Regarding version numbers etc., I will start a separate discussion
> -
> > >>> later
> > >>> > next week after we see how those packages will interact
> > >>> ("apache-airflow"
> > >>> > will only contain extras, but for compatibility reasons we likely
> want
> > >>> to
> > >>> > pin both "apache-airflow" and "apache-airflow-core" to each other,
> so
> > >>> that
> > >>> > users will be able to upgrade "core" by upgrading "apache-airflow"
> -
> > >>> we do
> > >>> > not want to change those habits likely.
> > >>> >
> > >>> > The "apache-airflow-task-sdk" will be versioned separately.
> > >>> >
> > >>> > Please take a look - also at the PR, see if you have any big
> > >>> > issues/questions/doubts - let's start discussion here - I am happy
> to
> > >>> > answer all general questions and adapt the PR to respond to
> > >>> > questions/suggestions.
> > >>> >
> > >>> > In the meantime I will be working on making the PR green and adding
> > >>> > missing bits and pieces for the release process.
> > >>> >
> > >>> > J.
> > >>> >
> > >>> >
> > >>> >
> > >>> >
> > >>>
> > >>
> >
>
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