Re: Packages that failed to build with Python 3.11 (and what to do)

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Hello Mark,

I replied in the upstream issue. I also think that this error looks like a problem in Cython. Could you please open an upstream report?

Have a nice day.
Tomas

On Mon, Jun 20, 2022 at 10:11 PM Mark E. Fuller <fuller@xxxxxxxxxxxxxxxxx> wrote:
On 20/06/2022 14:45, Tomas Hrnciar wrote:
<snip>
 >
 > ## Where to get help
 >
 > Reply to this thread or find us (thrnciar, mhroncok) on
#fedora-python IRC channel (libera.chat)or Matrix
(#python:fedoraproject.org <http://fedoraproject.org>).
 >
 > ---
 >
 > Let us know if you have other questions.
 >
<snip>

Question: my error appears to be in a Python header.
Can someone take a look at this and giver me some quick feedback as to
whether this is a problem for my package or a bug I should report?
It doesn't seem to fall into one of the neat categories described by Tomas

```
/usr/bin/python3 -c "import Cython.Build;
Cython.Build.cythonize('build/python/cantera/_cantera.pyx')"
Compiling build/python/cantera/_cantera.pyx because it changed.
[1/1] Cythonizing build/python/cantera/_cantera.pyx
g++ -o build/temp-py/_cantera.os -c -std=c++11 -pthread -O3 -Wno-inline
-g -fPIC -DNDEBUG -Iinclude -I/usr/include/python3.11
-I/usr/lib64/python3.11/site-packages/numpy/core/include
-I/usr/include/eigen3 build/python/cantera/_cantera.cpp
In file included from
/usr/lib64/python3.11/site-packages/numpy/core/include/numpy/ndarraytypes.h:1960,
                  from
/usr/lib64/python3.11/site-packages/numpy/core/include/numpy/ndarrayobject.h:12,
                  from
/usr/lib64/python3.11/site-packages/numpy/core/include/numpy/arrayobject.h:5,
                  from build/python/cantera/_cantera.cpp:749:
/usr/lib64/python3.11/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:17:2:
warning: #warning "Using deprecated NumPy API, disable it with "
"#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp]
    17 | #warning "Using deprecated NumPy API, disable it with " \
       |  ^~~~~~~
In file included from /usr/include/python3.11/Python.h:38,
                  from build/python/cantera/_cantera.cpp:20:
/usr/include/python3.11/pyport.h: In instantiation of 'type
{anonymous}::_Py_CAST_impl(const expr_type&) [with type = _object*;
expr_type = int]':
build/python/cantera/_cantera.cpp:193144:9:   required from here
/usr/include/python3.11/pyport.h:47:24: error: invalid 'static_cast'
from type 'int' to type '_object*'
    47 |                 return static_cast<type>(const_cast<expr_type
&>(expr));
       | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
scons: *** [build/temp-py/_cantera.os] Error 1
scons: building terminated because of errors.
```

See: https://github.com/Cantera/cantera/issues/1325
Also: https://kojipkgs.fedoraproject.org/work/tasks/2453/88502453/build.log

Best,
-fuller

--
Mark E. Fuller, Ph.D.
HaShikma 19, Apt. 24
Nesher 3681219, Israel
+972 (0)53-872-6579
+49 (0)1577 1848188
+1 401-214-4266
mark.e.fuller@xxxxxxxxx
mark.e.fuller@xxxxxx
fuller@xxxxxxxxxxxxx
@fuller:one.ems.host
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