That is actually interesting. Anecdotally, here in Waterloo there is a
significant Chinese community and so there are actually many apartment
buildings which do not have a 13th floor due to the superstition. Of
course, the 13th floor exists, but it is given a different number.

I would say I'm not strictly against using 14.0.0 or even 15.0.0 (I see 14
is also unlucky in the Suse link) instead for the release. I don't think
any NuttX users have mentioned this issue on the 13.0.0 discussions before
though.

Matteo

On Thu, Feb 19, 2026 at 10:09 AM Alan C. Assis <[email protected]> wrote:

> Yes, I think we can postpone branching the release 13.0.0 to include the
> most important breaking changes on it (otherwise there is no need to
> increase the release digit if there are not significant changes).
>
>
>
> On Thu, Feb 19, 2026 at 12:02 PM Matteo Golin <[email protected]>
> wrote:
>
> > Hi all,
> >
> > May I provide an alternative view: 13 is a lucky number for Italians :)
> >
> > In all seriousness, I do agree that March 1 might be a bit early for the
> > 13.0.0 release. I know there are several other tasks on the issue tracker
> > for it, so I don't want to push it along with my changes here
> prematurely.
> > I'm not sure if the time representation getting pushed from 32b to 64b
> has
> > been merged, but I also wanted to tackle the empty apps docs and the
> > README.txt files for the big release. If we can bundle more breaking
> > changes in time for 13.0.0 that is better, I think. I don't mind
> > "maintaining" the init patch (since it's a moving target) as the other
> > changes are getting ready; I don't think it would be too involved.
> >
> > I think releasing a 13.0.0 is fine anyways. I honestly don't think very
> > many upstream patches from 12.x users are going to be affected. There
> > really aren't many crazy breaking changes to be in 13.0.0 yet, most APIs
> > are the same. I also agree that there is too much involved in having an
> LTS
> > or a separately maintained internal version. I would be in support of
> > delaying the release for a longer testing period given the major version
> > bump, but I don't think we should treat 13.0.0 too much differently from
> a
> > regular release.
> >
> > In terms of the actual change I'm making to the init, I think it is
> quite a
> > large benefit because it finally prevents all the NuttX boards from
> relying
> > on user space code (NSH/boardctl) to bring up the board. I encountered
> this
> > issue a few times myself when trying to make my own apps an entry point
> for
> > NuttX. It is definitely not the only thing that could be done for the
> boot
> > process, and I agree that we can also focus on documenting it better.
> But,
> > I don't think there is a reason to object to this change and it has been
> > discussed/desired by the community for a long time. I'm happy to explain
> > the change in more detail if my PR descriptions/the issue discussion
> aren't
> > clear enough!
> >
> > Question for Alin: what is the normal process for breaking changes in
> > releases? I'm wondering if its possible to merge into mainline and just
> > wait longer between the current version and 13.0.0 as other breaking
> > changes catch up in development. That way mainline is the "draft 13.0.0"
> > and doesn't need special maintenance. Of course, if this doesn't fit in
> the
> > usual release process, I am happy to maintain the patch branch until
> things
> > are ready!
> >
> > Best,
> > Matteo
> >
> > On Thu, Feb 19, 2026, 9:22 AM raiden00pl <[email protected]> wrote:
> >
> > > No one serious will avoid NuttX because it's version 13. Let's be
> > > serious, this
> > > is a community of engineers, not stock market traders. Don't waste time
> > > discussing superstitions, because it's starting to look like AI bots
> > > discussion ;)
> > >
> > > czw., 19 lut 2026 o 15:12 Alan C. Assis <[email protected]>
> napisał(a):
> > >
> > > > But it will make it difficult to get their patches integrated into
> the
> > > > mainline, since 12.x to 13.x will have a big difference.
> > > >
> > > > NuttX 12.0.0 was released on 2023-01-16, more than 3 years ago, so I
> > > > suppose if we follow the same logic, users that decided to use an old
> > > > version could be using a version from more than 3 years ago.
> > > >
> > > > We already have many issues in the project to worry about, having
> users
> > > > avoiding using NuttX just because it has a 13.x release is something
> I
> > > > think we can skip, we can avoid! :-)
> > > >
> > > > BR,
> > > >
> > > > Alan
> > > >
> > > > On Thu, Feb 19, 2026 at 11:00 AM Alin Jerpelea <[email protected]>
> > > wrote:
> > > >
> > > > > Hi all,
> > > > >
> > > > > such separation will be hard to maintain and will produce confusion
> > > > >
> > > > > I think that it is better to have 13.xx.xx released on the normal
> > cycle
> > > > and
> > > > > let users decide if they use the "stable 12.xx.xx releases" or the
> > "new
> > > > > 13.xx.xx"
> > > > > I can add a Note to the release notes to clarify that 13.0.0 may
> need
> > > > some
> > > > > releases to shine
> > > > >
> > > > > Best regards
> > > > > Alin
> > > > >
> > > > >
> > > > > On Thu, Feb 19, 2026 at 2:45 PM Alan C. Assis <[email protected]>
> > > wrote:
> > > > >
> > > > > > Yes, I think LTS is not the way to go.
> > > > > >
> > > > > > But I agree with Tomek to keep version 13 as internal usage only,
> > not
> > > > for
> > > > > > final users and companies.
> > > > > >
> > > > > > BR,
> > > > > >
> > > > > > Alan
> > > > > >
> > > > > > On Thu, Feb 19, 2026 at 10:28 AM Alin Jerpelea <
> [email protected]
> > >
> > > > > wrote:
> > > > > >
> > > > > > > Hi all,
> > > > > > >
> > > > > > > With the resources available we can not start a LTS track
> > > > > > > I propose that we continue using, for now, the same release
> > > procedure
> > > > > > >
> > > > > > > Best regards
> > > > > > > Alin
> > > > > > >
> > > > > > >
> > > > > > > On Thu, Feb 19, 2026 at 1:57 PM raiden00pl <
> [email protected]
> > >
> > > > > wrote:
> > > > > > >
> > > > > > > > LTS was discussed on this list earlier, and the conclusion
> was
> > > that
> > > > > the
> > > > > > > > project
> > > > > > > > didn't have the resources to maintain LTS release. I don't
> > think
> > > > > > anything
> > > > > > > > has
> > > > > > > > changed since then in terms of resources available (or
> should I
> > > say
> > > > > > it's
> > > > > > > > worse now?),
> > > > > > > > so bringing LTS release idea into this discussion doesn't
> make
> > > much
> > > > > > > sense.
> > > > > > > >
> > > > > > > > czw., 19 lut 2026 o 13:44 Tomek CEDRO <[email protected]>
> > > > napisał(a):
> > > > > > > >
> > > > > > > > > Or we could resemble FreeBSD organization to match
> > progressive
> > > > and
> > > > > > > > > conservative crowd:
> > > > > > > > > 1. CURRENT is the master experimental branch (i.e.
> > 13-CURRENT).
> > > > > > > > > 2. STABLE is well tested and not breaking branch (i.e.
> > > > 12-STABLE).
> > > > > > > > > 3. RELEASE is snapshot of STABLE in time marked with number
> > > > branch
> > > > > > > > > (i.e. 12.12-RELEASE).
> > > > > > > > >
> > > > > > > > > When CURRENT gets mature it goes STABLE (branch), bumps
> > number
> > > > and
> > > > > > > > > starts experimenting (branch) again. STABLE gets updates
> and
> > > > fixes
> > > > > > > > > from CURRENT, but it also serves as source for RELEASE
> > (branch)
> > > > > from
> > > > > > > > > time to time. If you need some fix from STABLE but you use
> > > > RELEASE
> > > > > > you
> > > > > > > > > can build it safely.. except release is also tied to some
> > tools
> > > > > > > > > packages etc. Stability here in terms of API. Plus "compat"
> > > layer
> > > > > > that
> > > > > > > > > provides cross-version ABI compatibility (i.e. 10.0 binary
> > > works
> > > > > fine
> > > > > > > > > on 14.3).
> > > > > > > > >
> > > > > > > > > https://www.freebsd.org/releng/
> > > > > > > > > https://docs.freebsd.org/en/articles/freebsd-releng/
> > > > > > > > >
> > > > > > > > > It may sound fun but still a lot of maintenance work for a
> > > small
> > > > > > > > > team.. maybe too much.. or just some inspiration :-)
> > > > > > > > >
> > > > > > > > > --
> > > > > > > > > CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
> > > > > > > > >
> > > > > > > > > On Thu, Feb 19, 2026 at 1:17 PM Alan C. Assis <
> > > [email protected]
> > > > >
> > > > > > > wrote:
> > > > > > > > > >
> > > > > > > > > > That is a good idea!
> > > > > > > > > >
> > > > > > > > > > The number 13 could be like a transition (passage)
> version,
> > > it
> > > > > > could
> > > > > > > be
> > > > > > > > > > considered a breaking version, before the final version
> > > > release.
> > > > > > > > > >
> > > > > > > > > > In this version we will have the chance to improve the
> boot
> > > > > > > > > initialization
> > > > > > > > > > and other things, i.e.: currently we have the common
> boards
> > > > that
> > > > > > have
> > > > > > > > > > drivers shared in the same chip family, but it is
> possible
> > to
> > > > > > extend
> > > > > > > > this
> > > > > > > > > > idea to have these drivers working for all chips.
> > > > > > > > > >
> > > > > > > > > > +1
> > > > > > > > > >
> > > > > > > > > > BR,
> > > > > > > > > >
> > > > > > > > > > Alan
> > > > > > > > > >
> > > > > > > > > > On Thu, Feb 19, 2026 at 9:07 AM Tomek CEDRO <
> > > [email protected]>
> > > > > > > wrote:
> > > > > > > > > >
> > > > > > > > > > > Well I also know some people in person that avoid 13 at
> > all
> > > > > cost
> > > > > > it
> > > > > > > > is
> > > > > > > > > > > quite funny.. but for me 13 is kinda lucky even if in a
> > > > > different
> > > > > > > > > > > way.. we may consider 13 internal testing and then just
> > go
> > > > 14..
> > > > > > > > > > > whatever :D :D :D
> > > > > > > > > > >
> > > > > > > > > > > --
> > > > > > > > > > > CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
> > > > > > > > > > >
> > > > > > > > > > > On Thu, Feb 19, 2026 at 12:44 PM Alan C. Assis <
> > > > > > [email protected]>
> > > > > > > > > wrote:
> > > > > > > > > > > >
> > > > > > > > > > > > I agree! Also we need to decide whether to use the
> > number
> > > > 13
> > > > > or
> > > > > > > > will
> > > > > > > > > skip
> > > > > > > > > > > > it! :-)
> > > > > > > > > > > >
> > > > > > > > > > > > Historically it is proved that this number is not
> good
> > > > luck,
> > > > > > even
> > > > > > > > > NASA
> > > > > > > > > > > when
> > > > > > > > > > > > tried to insist on it (what could go wrong, NASA has
> > the
> > > > > > smartest
> > > > > > > > > people
> > > > > > > > > > > on
> > > > > > > > > > > > the planet), that resulted in a catastrophic event
> that
> > > > > almost
> > > > > > > > ended
> > > > > > > > > up
> > > > > > > > > > > > with the life of 3 persons.
> > > > > > > > > > > >
> > > > > > > > > > > > Ok, maybe I'll writing it as a joke, but imagine
> > someone
> > > > > > > > considering
> > > > > > > > > to
> > > > > > > > > > > use
> > > > > > > > > > > > NuttX, if they have any doubt they will not use NuttX
> > 13
> > > > for
> > > > > > > sure!
> > > > > > > > > :-D
> > > > > > > > > > > >
> > > > > > > > > > > > So, I vote for NuttX 14 :-D
> > > > > > > > > > > >
> > > > > > > > > > > > BR,
> > > > > > > > > > > >
> > > > > > > > > > > > Alan
> > > > > > > > > > > >
> > > > > > > > > > > > On Thu, Feb 19, 2026 at 8:22 AM Tomek CEDRO <
> > > > > [email protected]>
> > > > > > > > > wrote:
> > > > > > > > > > > >
> > > > > > > > > > > > > I would not rush with the 13 and keep it for time
> > when
> > > > most
> > > > > > > > > breaking
> > > > > > > > > > > > > things are settled and we could call it first LTS
> > > > release,
> > > > > > > until
> > > > > > > > > then
> > > > > > > > > > > > > stick to 12 and small improvements in minor
> releases,
> > > > but I
> > > > > > > will
> > > > > > > > > > > > > follow the community voice :-)
> > > > > > > > > > > > >
> > > > > > > > > > > > > --
> > > > > > > > > > > > > CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
> > > > > > > > > > > > >
> > > > > > > > > > > > > On Thu, Feb 19, 2026 at 7:23 AM Alin Jerpelea <
> > > > > > > > [email protected]>
> > > > > > > > > > > wrote:
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Hi Matteo,
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > I will fork the next release branch on 1st of
> March
> > > so
> > > > > that
> > > > > > > we
> > > > > > > > > have 1
> > > > > > > > > > > > > month
> > > > > > > > > > > > > > to test the release.
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > I propose that we name this release 13.0.0 and we
> > put
> > > > all
> > > > > > > > planned
> > > > > > > > > > > > > breacking
> > > > > > > > > > > > > > changes in the new release
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Best regards
> > > > > > > > > > > > > > Alin
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > On Thu, 19 Feb 2026, 06:47 Matteo Golin, <
> > > > > > > > [email protected]
> > > > > > > > > >
> > > > > > > > > > > wrote:
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > > Hello everyone,
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > I have decided to work on tackling this issue:
> > > > > > > > > > > > > > > https://github.com/apache/nuttx/issues/11321
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > The crux of it is: many boards rely on NSH to
> > > > > initialize
> > > > > > > > > > > > > > > peripherals/board-level systems. This is done
> > > through
> > > > > the
> > > > > > > > > > > user-space
> > > > > > > > > > > > > call
> > > > > > > > > > > > > > > to boardctl(BOARDIOC_INIT). However,
> > > > > > BOARD_LATE_INITIALIZE
> > > > > > > > also
> > > > > > > > > > > does
> > > > > > > > > > > > > the
> > > > > > > > > > > > > > > same thing. This is confusing for many users
> and
> > > also
> > > > > > > results
> > > > > > > > > in
> > > > > > > > > > > boards
> > > > > > > > > > > > > > > having out-of-sync init methods (i.e. late_init
> > > does
> > > > > > > > something
> > > > > > > > > > > > > different
> > > > > > > > > > > > > > > than app_init, but they shouldn't). To simplify
> > the
> > > > > > > > > initialization
> > > > > > > > > > > and
> > > > > > > > > > > > > > > reduce user confusion, the suggestion was to
> > > > completely
> > > > > > > > remove
> > > > > > > > > > > > > > > BOARDIOC_INIT/board_app_initialize and
> > NSH_ARCHINIT
> > > > in
> > > > > > > favour
> > > > > > > > > of
> > > > > > > > > > > > > > > BOARD_LATE_INITIALIZE. This is a massive
> breaking
> > > > > change
> > > > > > > and
> > > > > > > > > was
> > > > > > > > > > > put
> > > > > > > > > > > > > on the
> > > > > > > > > > > > > > > to-do list for 13.0.0 but it hadn't been picked
> > up
> > > > yet
> > > > > > and
> > > > > > > > > we're
> > > > > > > > > > > still
> > > > > > > > > > > > > in
> > > > > > > > > > > > > > > time for 13.0.0.
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > I have a draft PR open here to the kernel with
> > most
> > > > of
> > > > > > the
> > > > > > > > > boards
> > > > > > > > > > > > > adhering
> > > > > > > > > > > > > > > to the new changes:
> > > > > > > > https://github.com/apache/nuttx/pull/18408
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > And here to the apps repo removing references
> to
> > > > > > > > BOARDIOC_INIT
> > > > > > > > > and
> > > > > > > > > > > > > > > NSH_ARCHINIT:
> > > > > > > https://github.com/apache/nuttx-apps/pull/3405
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > These PRs are large, introduce breaking
> changes,
> > > and
> > > > > > touch
> > > > > > > > many
> > > > > > > > > > > > > different
> > > > > > > > > > > > > > > boards (not all of which I am able to test on
> my
> > > > > limited
> > > > > > > > > hardware
> > > > > > > > > > > > > set). I
> > > > > > > > > > > > > > > would appreciate eyes on these PRs to see if
> > there
> > > > are
> > > > > > any
> > > > > > > > > flaws
> > > > > > > > > > > in my
> > > > > > > > > > > > > > > initial approach and also in case anyone would
> > like
> > > > to
> > > > > > > > > volunteer to
> > > > > > > > > > > > > test
> > > > > > > > > > > > > > > the changes on some hardware (I don't own
> > anything
> > > > with
> > > > > > an
> > > > > > > > > STM32
> > > > > > > > > > > for
> > > > > > > > > > > > > > > instance).
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > The CI is also going to report a lot of errors
> > due
> > > to
> > > > > the
> > > > > > > > > changes
> > > > > > > > > > > being
> > > > > > > > > > > > > > > across both repositories (and they will be out
> of
> > > > sync
> > > > > > with
> > > > > > > > > each
> > > > > > > > > > > other
> > > > > > > > > > > > > in
> > > > > > > > > > > > > > > the CI runs), hence the importance of testing
> :)
> > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > Thanks for your feedback in advance (and maybe
> > your
> > > > > time
> > > > > > > > > testing
> > > > > > > > > > > if you
> > > > > > > > > > > > > > > can!)
> > > > > > > > > > > > > > > Matteo
> > > > > > > > > > > > > > >
> > > > > > > > > > > > >
> > > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

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