Bug#948458: sympy breaks octave-symbolic autopkgtest: unsupported operand type(s) for +: 'Singleton' and 'FiniteSet'

[Paul Gevers]

Source: sympy, octave-symbolic
Control: found -1 sympy/1.5-1
Control: found -1 octave-symbolic/2.8.0-1
Severity: serious
Tags: sid bullseye
X-Debbugs-CC: debian-ci at lists.debian.org
User: debian-ci at lists.debian.org
Usertags: breaks needs-update

Dear maintainers,

With a recent upload of sympy the autopkgtest of octave-symbolic fails
in testing when that autopkgtest is run with the binary packages of
sympy from unstable. It passes when run with only packages from testing.
In tabular form:
                       pass            fail
sympy                  from testing    1.5-1
octave-symbolic        from testing    2.8.0-1
all others             from testing    from testing

I copied some of the output at the bottom of this report.

Currently this regression is blocking the migration of sympy to testing
[1]. Due to the nature of this issue, I filed this bug report against
both packages. Can you please investigate the situation and reassign the
bug to the right package?

More information about this bug and the reason for filing it can be found on
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

Paul

[1] https://qa.debian.org/excuses.php?package=sympy

https://ci.debian.net/data/autopkgtest/testing/amd64/o/octave-symbolic/3915708/log.gz

***** test
 e = finiteset();
 s = finiteset(sym(1));
 s2 = e + s;
 assert (isequal (s, s2))
!!!!! test failed
Python exception: TypeError: unsupported operand type(s) for +:
'Singleton' and 'FiniteSet'
    occurred at line 8 of the Python code block:
    return x + y
3 tests, 2 passed, 0 known failure, 0 skipped

[...]

Some tests failed.  Giving up...
Summary: 2300 tests, 2268 passed, 25 known failures, 0 skipped

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