[Python] 12.0.1 FTBFS w/ Cython-3 on Fedora 39/rawhide

[kalebskeithley]

I'm the maintainer of Apache Arrow on Fedora. To date, Arrow builds fine with cython 0.29. Fedora Rawhide has updated to Cython 3 and now the builds fail with:

 [ 16%] Built target _acero_pyx
  Error compiling Cython file:
  ------------------------------------------------------------
  ...
      cdef cppclass CFlightListing" arrow::flight::FlightListing":
          CResult[unique_ptr[CFlightInfo]] Next()
      cdef cppclass CSimpleFlightListing" arrow::flight::SimpleFlightListing":
          CSimpleFlightListing(vector[CFlightInfo]&& info)
                              ^
  ------------------------------------------------------------
  pyarrow/includes/libarrow_flight.pxd:175:28: Rvalue-reference as function argument not supported
  gmake[2]: Leaving directory '/builddir/build/BUILD/apache-arrow-12.0.1/python/build/temp.linux-aarch64-cpython-312'
  [ 16%] Built target _parquet_encryption_pyx
  gmake[2]: Leaving directory '/builddir/build/BUILD/apache-arrow-12.0.1/python/build/temp.linux-aarch64-cpython-312'
  [ 16%] Built target _parquet_pyx
  Error compiling Cython file:
  ------------------------------------------------------------
  ...
              # Text header values in gRPC (and HTTP/1, HTTP/2) are
              # required to be valid ASCII. Binary header values are
              # exposed as bytes.
              value = value.decode("ascii")
          headers.setdefault(header, []).append(value)
          postincrement(header_iter)
          ^
  ------------------------------------------------------------
  pyarrow/_flight.pyx:2312:8: No 'operator++(int)' declared for postfix '++' (operand type is 'const_iterator')

full build log at https://kojipkgs.fedoraproject.org/work/tasks/1880/103851880/build.log (it's a scratch build so the logs won't stick around for long)

Component(s)

Python

[kou]

Closed as duplicated of #36730
#36745 will fix this.