The main issue with these annotations is that there are so many
providers. It's so bad that tooling just now look for names like
@NonNull _without considering the package name_, so there is no limit
as to how much you end up with :-(

On Mon, Dec 2, 2024 at 1:58 PM Matt Sicker <m...@musigma.org> wrote:
>
> I’m alright with the JSpecify dependency assuming it has accumulated the 
> momentum we expected. Also, I thought annotations didn’t have to exist at 
> runtime anyways as long as you weren’t using reflection on them.
>
> > On Nov 22, 2024, at 03:52, Piotr P. Karwasz <pi...@mailing.copernik.eu> 
> > wrote:
> >
> > Hi all,
> >
> > On 19.10.2024 09:28, Piotr P. Karwasz wrote:
> >> PS: Regarding annotations, can you take a look at issue #3110[4].
> >> Users are regularly reporting issues for annotations with a `provided`
> >> scope. This is due to the `classfile` option to `-Xlint`, which
> >> basically only covers missing annotations (of both `CLASS` and
> >> `RUNTIME` retention) that occur at **compile time**. I would like to
> >> take a per-annotation approach here: some annotations like JSpecify or
> >> Error Prone's `@InlineMe` can be really useful to users, so we can:
> >>
> >> * add 3819 bytes of JSpecify dependency to the `compile` scope of all
> >> artifacts. In the near future nullability annotations will be all over
> >> the place and JSpecify (compared to the other 13 kinds of annotations
> >> there) have some strong supporters[5].
> >> * keep the current _status quo_ for some annotations (e.g. `@InlineMe`
> >> and those OSGi versioning annotations that are not mirrored in the
> >> Manifest),
> >> * write a tool that removes the other annotations from the class files.
> >>
> >> [5]https://jspecify.dev/about/
> >
> > I decided to start implementing this proposal and I created PR #3228 to add 
> > JSpecify as `compile` dependency. The PR still allows users (include OSGi 
> > and JPMS users) to manually exclude the dependency, but I doubt anyone will 
> > do it.
> >
> > Are you OK with this change? IIRC the main argument against having 
> > non-optional dependencies in `log4j-api` and `log4j-core` was that we don't 
> > control them. The argument still stands, but it is micro dependency that is 
> > controlled by a large group of vendors, so its evolution is pretty much 
> > under control.
> >
> > Piotr
> >
> > [1] https://github.com/apache/logging-log4j2/pull/3228
>

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