Control: tags -1 + confirmed upstream
Thanks for this bug report, Santiago. As usual, your mass rebuilds are very
useful for tracking subtle and unexpected failures due to changes in the
package dependencies.
The current issue seems to be caused by a recent upgrade in the python3 package.
Using octave 11.3.0-1, octave-symbolic 3.2.2-1, python3-sympy 1.14.0-4, and
python 3.14.6-1, I have:
###########################################################################
$ octave -q
octave:1> pkg load symbolic
octave:2> test pycall_sympy__
Symbolic pkg v3.2.2: Python communication link active, SymPy v1.14.0.
**********************************************************************
Some deliberate AttributeError and ValueError may appear next
v v v v v v v v v v v v v v v v v v v v v v v v
Traceback (most recent call last):
File "<stdin>", line 4, in <module>
_ins.append(S.This_is_supposed_to_make_an_exception)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/sympy/core/singleton.py", line 143, in
__getattr__
raise AttributeError(
"Attribute '%s' was not installed on SymPy registry %s" % (
name, self))
AttributeError: Attribute 'This_is_supposed_to_make_an_exception' was not
installed on SymPy registry S
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
octoutput_drv(_outs)
~~~~~~~~~~~~~^^^^^^^
File "<stdin>", line 12, in octoutput_drv
octoutput(x, xroot)
~~~~~~~~~^^^^^^^^^^
File "<stdin>", line 96, in octoutput
raise ValueError("octoutput does not know how to export type " +
str(type(x)))
ValueError: octoutput does not know how to export type <class 'type'>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
End of deliberate errors!
You should see "46/46" or "Passes 46 out of 46 tests" below
**********************************************************************
warning: test: file /usr/share/octave/packages/symbolic-3.2.2/pycall_sympy__.m
leaked file descriptors
PASSES 46 out of 46 tests
###########################################################################
However, with the same versions of octave, otave-symbolic, python3-sympy, but
with python3 3.14.7-1, I get:
###########################################################################
$ octave -q
octave:1> pkg load symbolic
octave:2> test pycall_sympy__
Symbolic pkg v3.2.2: Python communication link active, SymPy v1.14.0.
**********************************************************************
Some deliberate AttributeError and ValueError may appear next
v v v v v v v v v v v v v v v v v v v v v v v v
Traceback (most recent call last):
File "<stdin>", line 4, in <module>
_ins.append(S.This_is_supposed_to_make_an_exception)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/sympy/core/singleton.py", line 143, in
__getattr__
raise AttributeError(
"Attribute '%s' was not installed on SymPy registry %s" % (
name, self))
AttributeError: Attribute 'This_is_supposed_to_make_an_exception' was not
installed on SymPy registry S
Waiting...................................................................................................
###########################################################################
and it hangs forever.
I do not know whether the problem is with python3, pythoh3-sympy, or
octave-symbolic. I will start by forwarding this bug report to the
octave-symbolic upstream authors.
Best,
Rafael Laboissière
* Santiago Vila <[email protected]> [2026-08-24 09:49]:
> Package: src:octave-symbolic
> Version: 3.2.2-1
> Severity: serious
> Tags: ftbfs forky sid
>
> Dear maintainer:
>
> During a rebuild of all packages in unstable, this package failed to build.
>
> The build never ended and the process had to be killed by hand,
> which means not even sbuild's built-in timeout mechanism worked this time.
>
> This used to work ok on 2026-08-03 and it already failed on 2026-08-22,
> but I don't have intermediate data.
>
> Below you will find the last part of the build log (probably the most
> relevant part, but not necessarily). If required, the full build log
> is available here:
>
> https://people.debian.org/~sanvila/build-logs/202608/
>
> About the archive rebuild: The build was made on virtual machines from AWS,
> using sbuild and a reduced chroot with only build-essential packages.
>
> If you cannot reproduce the bug please contact me privately, as I
> am willing to provide ssh access to a virtual machine where the bug is
> fully reproducible.
>
> If this is really a bug in one of the build-depends, please use
> reassign and add an affects on src:octave-symbolic, so that this is still
> visible in the BTS web page for this package.
>
> Thanks.
>
> --------------------------------------------------------------------------------
> [...]
> ***** test
> % return empty string (was https://bugs.python.org/issue25270)
> assert (isempty (pycall_sympy__ ('return ""')))
> ***** test
> % return nothing (via an empty list)
> % note distinct from 'return [],'
> pycall_sympy__ ('return []')
> ***** test
> % return nothing (because no return command)
> pycall_sympy__ ('dummy = 1')
> ***** test
> % return nothing (because no command)
> pycall_sympy__ ('')
> ***** test
> % return nothing (because no command)
> pycall_sympy__ ({})
> ***** error <AttributeError>
> % python exception while passing variables to python
> % This tests the "INTERNAL_PYTHON_ERROR" path.
> % FIXME: this is a very specialized test, relies on internal octsympy
> % implementation details, and may need to be adjusted for changes.
> disp('')
>
> disp('**********************************************************************')
> disp('')
> disp(' Some deliberate AttributeError and ValueError may appear next')
> disp('')
> disp('v v v v v v v v v v v v v v v v v v v v v v v
> v')
> b = sym([], 'S.This_is_supposed_to_make_an_exception', [1 1], 'Test',
> 'Test', 'Test');
> c = b + 1;
>
> **********************************************************************
>
> Some deliberate AttributeError and ValueError may appear next
>
> v v v v v v v v v v v v v v v v v v v v v v v v
> Traceback (most recent call last):
> File "<stdin>", line 4, in <module>
> _ins.append(S.This_is_supposed_to_make_an_exception)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> File "/usr/lib/python3/dist-packages/sympy/core/singleton.py", line 143, in
> __getattr__
> raise AttributeError(
> "Attribute '%s' was not installed on SymPy registry %s" % (
> name, self))
> AttributeError: Attribute 'This_is_supposed_to_make_an_exception' was not
> installed on SymPy registry S
> Waiting.......................................................................................................................................................................................................................................................................................................................................................................................................................
> --------------------------------------------------------------------------------
>
