Error while checking out the elpa branch

Error while checking out the elpa branch

[Tassilo Horn]

Hi all,

[I've started this mail as a question, but while writing I got aware
that the problem isn't my fault.  So no questions here, just "FYI".]

I've just wanted to setup the emacs dev workspace on some machine as
documented on http://emacswiki.org/emacs/BzrForEmacsDevs.  When checking
out the elpa branch, I got an assertion error in bzr.

--8<---------------cut here---------------start------------->8---
% bzr init-repo emacs
Shared repository with trees (format: 2a)
Location:
  shared repository: emacs
% cd emacs
% bzr branch bzr+ssh://tsdh@bzr.savannah.gnu.org/emacs/trunk trunk
Branched 110872 revisions.
% bzr branch bzr+ssh://tsdh@bzr.savannah.gnu.org/emacs/elpa elpa
bzr: ERROR: exceptions.AssertionError: ('not present: %r', StaticTuple('', '', 'TREE_ROOT'))

Traceback (most recent call last): ...
--8<---------------cut here---------------end--------------->8---

It turns out, the issue is known for more than a year.

  https://bugs.launchpad.net/bzr/+bug/830947

There's a patch available since a few months at

  http://bazaar.launchpad.net/~rrw/bzr/830947-tree-root-exception/revision/6538

Using that bzr version, I can get the elpa branch without errors.

The contents of the emacs/elpa directory seem to be identical between
the one checked out with bzr 2.5.1 with error, and the version checked
out with the bzr/830947-tree-root-exception branch.  However, there are
differences in emacs/.bzr/.

I've asked in the bug report if it's safe to work on the elpa branch
using bzr 2.5.1 once you've checked it out initially using the
830947-tree-root-exception branch.  (Maybe it's also ok to just ignore
the error.  Who knows...)

Oh, and Stefan also reported this bug in February:

  https://bugs.launchpad.net/bzr/+bug/937101
  Status: confirmed, Importance: Low

Low importance, seriously?  Am I a bit too sensitive in that this
doesn't really boost my trust in bzr?

I've added a link to the older report as Stefan's report seems to be a
duplicate.  And the older one is of High Importance with a fix (which
might or might not be correct), so hopefully it'll find it's way into
the mainline anytime soon.

Bye,
Tassilo

Re: Error while checking out the elpa branch

[Stefan Monnier]

> Oh, and Stefan also reported this bug in February:
>   https://bugs.launchpad.net/bzr/+bug/937101
>   Status: confirmed, Importance: Low
> Low importance, seriously?  Am I a bit too sensitive in that this
> doesn't really boost my trust in bzr?

I'm not happy about it either.

> duplicate.  And the older one is of High Importance with a fix (which
> might or might not be correct), so hopefully it'll find it's way into
> the mainline anytime soon.

Don't hold your breath.


        Stefan

Re: Error while checking out the elpa branch

[Juanma Barranquero]

On Mon, Nov 12, 2012 at 3:41 PM, Stefan Monnier
<monnier@iro.umontreal.ca> wrote:

> I'm not happy about it either.
[...]
> Don't hold your breath.

At which point (post-release) do we lose all faith and start looking
for alternatives? Yesterday's post by Alexander Belchenko and the many
replies it has generated (not!) isn't exactly reassuring.

    Juanma

Re: Error while checking out the elpa branch

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Mon, 12 Nov 2012 18:59:45 +0100
> Cc: emacs-devel@gnu.org
> 
> On Mon, Nov 12, 2012 at 3:41 PM, Stefan Monnier
> <monnier@iro.umontreal.ca> wrote:
> 
> > I'm not happy about it either.
> [...]
> > Don't hold your breath.
> 
> At which point (post-release) do we lose all faith and start looking
> for alternatives? Yesterday's post by Alexander Belchenko and the many
> replies it has generated (not!) isn't exactly reassuring.

I asked Richard to see what can be done.

Re: Error while checking out the elpa branch

[Dmitry Gutov]

Hi Eli,

Eli Zaretskii <eliz@gnu.org> writes:
>> From: Juanma Barranquero <lekktu@gmail.com>
>> Date: Mon, 12 Nov 2012 18:59:45 +0100
>> Cc: emacs-devel@gnu.org
>> 
>> On Mon, Nov 12, 2012 at 3:41 PM, Stefan Monnier
>> <monnier@iro.umontreal.ca> wrote:
>> 
>> > I'm not happy about it either.
>> [...]
>> > Don't hold your breath.
>> 
>> At which point (post-release) do we lose all faith and start looking
>> for alternatives? Yesterday's post by Alexander Belchenko and the many
>> replies it has generated (not!) isn't exactly reassuring.
>
> I asked Richard to see what can be done.

Any updates on this?

I hit this today, and it wasn't pleasant.

--Dmitry

Re: Error while checking out the elpa branch

[Eli Zaretskii]

> From: Dmitry Gutov <dgutov@yandex.ru>
> Cc: Juanma Barranquero <lekktu@gmail.com>,  monnier@iro.umontreal.ca,  emacs-devel@gnu.org
> Date: Mon, 24 Dec 2012 23:02:17 -0100
> 
> Hi Eli,
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> >> From: Juanma Barranquero <lekktu@gmail.com>
> >> Date: Mon, 12 Nov 2012 18:59:45 +0100
> >> Cc: emacs-devel@gnu.org
> >> 
> >> On Mon, Nov 12, 2012 at 3:41 PM, Stefan Monnier
> >> <monnier@iro.umontreal.ca> wrote:
> >> 
> >> > I'm not happy about it either.
> >> [...]
> >> > Don't hold your breath.
> >> 
> >> At which point (post-release) do we lose all faith and start looking
> >> for alternatives? Yesterday's post by Alexander Belchenko and the many
> >> replies it has generated (not!) isn't exactly reassuring.
> >
> > I asked Richard to see what can be done.
> 
> Any updates on this?

No.

Re: Error while checking out the elpa branch

[Stefan Monnier]

>> Any updates on this?
> No.

The latest update is that the error for "bzr co .../elpa" is not as
serious as it sounds: a subsequent "bzr update" gets you back on track.
Also there's a candidate patch for it (in the bug-report with which
mine was merged), but I don't know how good it is, and even if it's fine
it'll probably never be integrated, seeing how development has
completely stopped.


        Stefan

Re: Error while checking out the elpa branch

[joakim]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>> Any updates on this?
>> No.
>
> The latest update is that the error for "bzr co .../elpa" is not as
> serious as it sounds: a subsequent "bzr update" gets you back on track.
> Also there's a candidate patch for it (in the bug-report with which
> mine was merged), but I don't know how good it is, and even if it's fine
> it'll probably never be integrated, seeing how development has
> completely stopped.

Couldnt we simply bless a bzr branch of our own?
There are several useful patches floating around.

>
>         Stefan
>

-- 
Joakim Verona

Re: Error while checking out the elpa branch

[Stefan Monnier]

> Couldnt we simply bless a bzr branch of our own?
> There are several useful patches floating around.

Feel free to do that.  I have other things to attend to :-(


        Stefan