Description of problem:
Package python-nipy fails to build from source in Fedora Rawhide.

Version-Release number of selected component (if applicable):
0.6.1-1.fc42

Steps to Reproduce:
koji build --scratch f42 python-nipy-0.6.1-1.fc42.src.rpm

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/python-nipy

Reproducible: Always

Actual Results:  

[9/63] Generating 'nipy/algorithms/graph/_graph.cpython-313-x86_64-linux-gnu.so.p/_graph.c'
FAILED: nipy/algorithms/graph/_graph.cpython-313-x86_64-linux-gnu.so.p/_graph.c
/builddir/build/BUILD/python-nipy-0.6.1-build/nipy-0.6.0/nipy/_build_utils/cythoner.py ../nipy/algorithms/graph/_graph.pyx nipy/algorithms/graph/_graph.cpython-313-x86_64-linux-gnu.so.p/_graph.c
Error compiling Cython file:
------------------------------------------------------------
...
import numpy as np
cimport numpy as np
cimport cython
ctypedef np.float64_t DOUBLE
ctypedef np.int_t INT
         ^
------------------------------------------------------------
/builddir/build/BUILD/python-nipy-0.6.1-build/nipy-0.6.0/nipy/algorithms/graph/_graph.pyx:5:9: 'int_t' is not a type identifier
Traceback (most recent call last):
  File "/builddir/build/BUILD/python-nipy-0.6.1-build/nipy-0.6.0/nipy/_build_utils/cythoner.py", line 37, in <module>
    main()
    ~~~~^^
  File "/builddir/build/BUILD/python-nipy-0.6.1-build/nipy-0.6.0/nipy/_build_utils/cythoner.py", line 20, in main
    sbp.run(
    ~~~~~~~^
        [
        ^
    ...<10 lines>...
        check=True,
        ^^^^^^^^^^^
    )
    ^
  File "/usr/lib64/python3.13/subprocess.py", line 577, in run
    raise CalledProcessError(retcode, process.args,
                             output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['cython', '-3', '--fast-fail', '--output-file', '/builddir/build/BUILD/python-nipy-0.6.1-build/nipy-0.6.0/.mesonpy-11n2xx_m/nipy/algorithms/graph/_graph.cpython-313-x86_64-linux-gnu.so.p/_graph.c', '--include-dir', '/builddir/build/BUILD/python-nipy-0.6.1-build/nipy-0.6.0/.mesonpy-11n2xx_m', '/builddir/build/BUILD/python-nipy-0.6.1-build/nipy-0.6.0/nipy/algorithms/graph/_graph.pyx']' returned non-zero exit status 1.