Installation with GRIB broken for Python > 3.10

[johannesbulin]

What happened?

At the moment, installing with GRIB support (e.g. pip install .[grib]) fails for Python > 3.10 like this:

     src/pygrib/_pygrib.pyx:377:46: undeclared name not builtin: long
      Compiling src/pygrib/_pygrib.pyx because it changed.
      [1/1] Cythonizing src/pygrib/_pygrib.pyx
      Traceback (most recent call last):
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/venv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/venv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/venv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 251, in build_wheel
          return _build_backend().build_wheel(wheel_directory, config_settings,
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 441, in build_wheel
          return _build(['bdist_wheel', '--dist-info-dir', str(metadata_directory)])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 429, in _build
          return self._build_with_temp_dir(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 410, in _build_with_temp_dir
          self.run_setup()
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 520, in run_setup
          super().run_setup(setup_script=setup_script)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/build_meta.py", line 317, in run_setup
          exec(code, locals())
        File "<string>", line 113, in <module>
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/__init__.py", line 117, in setup
          return distutils.core.setup(**attrs)  # type: ignore[return-value]
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 186, in setup
          return run_commands(dist)
                 ^^^^^^^^^^^^^^^^^^
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 202, in run_commands
          dist.run_commands()
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 1000, in run_commands
          self.run_command(cmd)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/dist.py", line 1107, in run_command
          super().run_command(command)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 1019, in run_command
          cmd_obj.run()
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/command/bdist_wheel.py", line 370, in run
          self.run_command("build")
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/cmd.py", line 341, in run_command
          self.distribution.run_command(command)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/dist.py", line 1107, in run_command
          super().run_command(command)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 1019, in run_command
          cmd_obj.run()
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/command/build.py", line 135, in run
          self.run_command(cmd_name)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/cmd.py", line 341, in run_command
          self.distribution.run_command(command)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/dist.py", line 1107, in run_command
          super().run_command(command)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 1019, in run_command
          cmd_obj.run()
        File "<string>", line 19, in run
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/command/build_ext.py", line 367, in run
          self.build_extensions()
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/command/build_ext.py", line 483, in build_extensions
          self._build_extensions_serial()
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/setuptools/_distutils/command/build_ext.py", line 509, in _build_extensions_serial
          self.build_extension(ext)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/Cython/Distutils/build_ext.py", line 131, in build_extension
          new_ext = cythonize(
                    ^^^^^^^^^^
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/Cython/Build/Dependencies.py", line 1153, in cythonize
          cythonize_one(*args)
        File "/etc/ecmwf/ssd/ssd1/tmpdirs/dijb.879073.20260521_122035.157/pip-build-env-6galfyj4/overlay/lib/python3.11/site-packages/Cython/Build/Dependencies.py", line 1297, in cythonize_one
          raise CompileError(None, pyx_file)
      Cython.Compiler.Errors.CompileError: src/pygrib/_pygrib.pyx
      [end of output]

This is probably caused by using a fixed pygrib version used to circumvent issues like #41.

What are the steps to reproduce the bug?

pip install "ifsbench @ git+https://github.com/ecmwf-ifs/ifsbench.git" with Python > 3.10

Version

0.2.2

Platform (OS and architecture)

Relevant log output

Accompanying data

No response

Organisation

No response