Bug#1056531: cython 3.x (for Python 3.12)

[Julian Gilbey]

On Mon, Dec 11, 2023 at 04:34:17PM +0100, Matthias Klose wrote:
> On 11.12.23 16:19, Julian Gilbey wrote:
> > On Mon, Dec 11, 2023 at 08:09:31AM +0100, Matthias Klose wrote:
> > > [...]
> > > You could package a non-conflicting cython-legacy, however that would
> > > require more changes, also how to build it.
> > 
> > Hi Matthias,
> > 
> > Unfortunately, at least some of cython3-legacy doesn't currently work
> > with Python 3.12, and is the primary cause of (at least) #1056531.
> > cython3 provides the pyximport module, and that uses the imp module
> > which has been removed from Python 3.12.
> > 
> > Two possible ways forward on this particular bug:
> > 
> > - Disable all of the cython tests for this package for the time being,
> >    until cython 3.x migrates to testing - this is simple and effective.
> > 
> > - Patch cython3-legacy to use importlib rather than imp.  This is
> >    probably a good thing to do anyway.  (It may also be good to do this
> >    with cython3 version 0.x currently in testing/unstable until cython
> >    3.x is able to be uploaded to unstable.)  Then have my package's
> >    autopkgtest depend on cython3-legacy (unless cython3 0.x is also
> >    patched).
> 
> I won't working on this. Have you tried to depend on the python3-zombie-imp
> instead?

Excellent - I didn't know about that.  Are you OK for me to upload
versions of cython and cython-legacy which depend on this to fix the
Python 3.12 breakage?

Best wishes,

   Julian