greenlet can't build with python 3.14.0a7

[zzzeek]

hi greenlet -

greenlet was working for 3.14.0a5 and 3.14.0a6, but it looks like we're out of luck again for a7 just released today:

$ ~/.venv314/bin/pip install greenlet --force --no-cache
Collecting greenlet
  Downloading greenlet-3.1.1.tar.gz (186 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: greenlet
  Building wheel for greenlet (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for greenlet (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [209 lines of output]
      /tmp/pip-build-env-ywn3tht3/overlay/lib/python3.14/site-packages/setuptools/dist.py:759: SetuptoolsDeprecationWarning: License classifiers are deprecated.
      !!
      
              ********************************************************************************
              Please consider removing the following classifiers in favor of a SPDX license expression:
      
              License :: OSI Approved :: MIT License
      
              See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
              ********************************************************************************
      
      !!
        self._finalize_license_expression()
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/__init__.py -> build/lib.linux-x86_64-cpython-314/greenlet
      creating build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_weakref.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_version.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_tracing.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_throw.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_stack_saved.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_leaks.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_greenlet_trash.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_greenlet.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_generator_nested.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_generator.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_gc.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_extension_interface.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_cpp.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_contextvars.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/leakcheck.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_switch_two_greenlets.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_switch_three_greenlets2.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_switch_three_greenlets.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_slp_switch.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_initialstub_already_started.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_cpp_exception.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_clearing_run_switches.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/__init__.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      creating build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/__init__.py -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      running egg_info
      writing src/greenlet.egg-info/PKG-INFO
      writing dependency_links to src/greenlet.egg-info/dependency_links.txt
      writing requirements to src/greenlet.egg-info/requires.txt
      writing top-level names to src/greenlet.egg-info/top_level.txt
      reading manifest file 'src/greenlet.egg-info/SOURCES.txt'
      reading manifest template 'MANIFEST.in'
      warning: no previously-included files found matching 'benchmarks/*.json'
      no previously-included directories found matching 'docs/_build'
      warning: no files found matching '*.py' under directory 'appveyor'
      warning: no previously-included files matching '*.pyc' found anywhere in distribution
      warning: no previously-included files matching '*.pyd' found anywhere in distribution
      warning: no previously-included files matching '*.so' found anywhere in distribution
      warning: no previously-included files matching '.coverage' found anywhere in distribution
      adding license file 'LICENSE'
      adding license file 'LICENSE.PSF'
      adding license file 'AUTHORS'
      writing manifest file 'src/greenlet.egg-info/SOURCES.txt'
      copying src/greenlet/CObjects.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyGreenlet.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyGreenletUnswitchable.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyModule.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TBrokenGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TExceptionState.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TGreenlet.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TGreenletGlobals.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TMainGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TPythonState.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TStackState.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TThreadState.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TThreadStateCreator.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TThreadStateDestroy.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TUserGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet.h -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_allocator.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_compiler_compat.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_cpython_add_pending.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_cpython_compat.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_exceptions.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_internal.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_refs.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_slp_switch.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_thread_support.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/slp_platformselect.h -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/tests/_test_extension.c -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/_test_extension_cpp.cpp -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/platform/setup_switch_x64_masm.cmd -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_aarch64_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_alpha_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_amd64_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm32_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm32_ios.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm64_masm.asm -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm64_masm.obj -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm64_msvc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_csky_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_loongarch64_linux.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_m68k_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_mips_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc64_aix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc64_linux.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_aix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_linux.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_macosx.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_riscv_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_s390_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_sh_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_sparc_sun_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x32_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x64_masm.asm -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x64_masm.obj -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x64_msvc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x86_msvc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x86_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      running build_ext
      building 'greenlet._greenlet' extension
      creating build/temp.linux-x86_64-cpython-314/src/greenlet
      g++ -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -fPIC -I/home/classic/.venv314/include -I/opt/python-3.14.0a7/include/python3.14 -c src/greenlet/greenlet.cpp -o build/temp.linux-x86_64-cpython-314/src/greenlet/greenlet.o
      In file included from src/greenlet/greenlet.cpp:31:
      src/greenlet/TGreenlet.cpp: In member function ‘void greenlet::Greenlet::expose_frames()’:
      src/greenlet/TGreenlet.cpp:626:29: error: aggregate ‘_PyInterpreterFrame iframe_copy’ has incomplete type and cannot be defined
        626 |         _PyInterpreterFrame iframe_copy;
            |                             ^~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:627:65: error: invalid application of ‘sizeof’ to incomplete type ‘_PyInterpreterFrame’
        627 |         this->stack_state.copy_from_stack(&iframe_copy, iframe, sizeof(*iframe));
            |                                                                 ^~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:628:14: error: ‘_PyFrame_IsIncomplete’ was not declared in this scope
        628 |         if (!_PyFrame_IsIncomplete(&iframe_copy)) {
            |              ^~~~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:654:24: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        654 |             if (!iframe->frame_obj) {
            |                        ^~
      In file included from /opt/python-3.14.0a7/include/python3.14/pyframe.h:19,
                       from /opt/python-3.14.0a7/include/python3.14/Python.h:104,
                       from src/greenlet/greenlet.cpp:16:
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:656:37: error: aggregate ‘_PyInterpreterFrame dummy_iframe’ has incomplete type and cannot be defined
        656 |                 _PyInterpreterFrame dummy_iframe;
            |                                     ^~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:661:38: error: ‘FRAME_OWNED_BY_GENERATOR’ was not declared in this scope
        661 |                 dummy_iframe.owner = FRAME_OWNED_BY_GENERATOR;
            |                                      ^~~~~~~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:686:45: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        686 |                 memcpy(&last_complete_iframe->frame_obj->_f_frame_data[0],
            |                                             ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:687:45: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        687 |                        &last_complete_iframe->previous, sizeof(void *));
            |                                             ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:688:37: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        688 |                 last_complete_iframe->previous = iframe;
            |                                     ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:705:37: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        705 |         memcpy(&last_complete_iframe->frame_obj->_f_frame_data[0],
            |                                     ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:706:37: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        706 |                &last_complete_iframe->previous, sizeof(void *));
            |                                     ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TGreenlet.cpp:707:29: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        707 |         last_complete_iframe->previous = nullptr;
            |                             ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      In file included from src/greenlet/greenlet.cpp:36:
      src/greenlet/TPythonState.cpp: In member function ‘void greenlet::PythonState::unexpose_frames()’:
      src/greenlet/TPythonState.cpp:179:51: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        179 |         _PyInterpreterFrame *prev_exposed = iframe->previous;
            |                                                   ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TPythonState.cpp:181:23: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        181 |         memcpy(&iframe->previous, &iframe->frame_obj->_f_frame_data[0],
            |                       ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      src/greenlet/TPythonState.cpp:181:42: error: invalid use of incomplete type ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
        181 |         memcpy(&iframe->previous, &iframe->frame_obj->_f_frame_data[0],
            |                                          ^~
      /opt/python-3.14.0a7/include/python3.14/cpython/pyframe.h:25:8: note: forward declaration of ‘_PyInterpreterFrame’ {aka ‘struct _PyInterpreterFrame’}
         25 | struct _PyInterpreterFrame;
            |        ^~~~~~~~~~~~~~~~~~~
      error: command '/usr/bin/g++' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for greenlet
Failed to build greenlet
ERROR: Failed to build installable wheels for some pyproject.toml based projects (greenlet)

[jamadden]

Thanks for the report. I don't normally try to keep up with alpha releases, but I'll see if I can find time to take a look at this.

[zzzeek]

OK, I've been trying to lobby internally for some of the usual suspects but so far no replies :(

do you think a pep to have greenlet included in Python would ever have a chance? since this is annual exercise is getting tedious

[jamadden]

HEAD will now compile and run correctly on 3.14a7.

do you think a pep to have greenlet included in Python would ever have a chance? since this is annual exercise is getting tedious

I thoroughly agree, and as the internals of CPython are getting more and more complex with every release, I expect the pain to only get worse.

Is there a chance of greenlet being made part of CPython? I have no idea, but it sure would be nice. PyPy bundles it so there's precedent.

[zzzeek]

doh it was just two header files. OK, I thought they rearranged the stackframes again

[vstinner]

HEAD will now compile and run correctly on 3.14a7.

Alright, greenlet was fixed by commit cf7f854: PR #442.

Can this issue be closed, or do you want to make a new release first?

[zzzeek]

OK 3.14.0b1 is out, time for me to test again

[zzzeek]

OOOkkk sorry, this is a fail again

3.14.0a7 successfully builds with current master

$ /opt/python-3.14.0a7/bin/pip3 wheel git+https://github.com/python-greenlet/greenlet/
Collecting git+https://github.com/python-greenlet/greenlet/
  Cloning https://github.com/python-greenlet/greenlet/ to /tmp/pip-req-build-x1a6tzqt
  Running command git clone --filter=blob:none --quiet https://github.com/python-greenlet/greenlet/ /tmp/pip-req-build-x1a6tzqt
  Resolved https://github.com/python-greenlet/greenlet/ to commit 91958284124f30d056f111ee345cc4a379d6ebff
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: greenlet
  Building wheel for greenlet (pyproject.toml) ... done
  Created wheel for greenlet: filename=greenlet-3.2.2.dev0-cp314-cp314-linux_x86_64.whl size=659178 sha256=b1d3e3b8499c1bd3604d271f622bfcbdb4afc3f45510679aa53570875d724e20
  Stored in directory: /tmp/pip-ephem-wheel-cache-7izccyq7/wheels/c2/b5/1d/07a14c7daabdf497d1ee5d5e5d525a9d12a50fcffbf7f4cd9d
Successfully built greenlet

3.14.0b1 does not

$ /opt/python-3.14.0b1/bin/pip3 wheel git+https://github.com/python-greenlet/greenlet/
Collecting git+https://github.com/python-greenlet/greenlet/
  Cloning https://github.com/python-greenlet/greenlet/ to /tmp/pip-req-build-u_qlukuv
  Running command git clone --filter=blob:none --quiet https://github.com/python-greenlet/greenlet/ /tmp/pip-req-build-u_qlukuv
  Resolved https://github.com/python-greenlet/greenlet/ to commit 91958284124f30d056f111ee345cc4a379d6ebff
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: greenlet
  Building wheel for greenlet (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for greenlet (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [129 lines of output]
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/__init__.py -> build/lib.linux-x86_64-cpython-314/greenlet
      creating build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_weakref.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_version.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_tracing.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_throw.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_stack_saved.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_leaks.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_greenlet_trash.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_greenlet.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_generator_nested.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_generator.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_gc.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_extension_interface.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_cpp.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/test_contextvars.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/leakcheck.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_switch_two_greenlets.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_switch_three_greenlets2.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_switch_three_greenlets.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_slp_switch.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_initialstub_already_started.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_cpp_exception.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/fail_clearing_run_switches.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/__init__.py -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      creating build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/__init__.py -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      running egg_info
      writing src/greenlet.egg-info/PKG-INFO
      writing dependency_links to src/greenlet.egg-info/dependency_links.txt
      writing requirements to src/greenlet.egg-info/requires.txt
      writing top-level names to src/greenlet.egg-info/top_level.txt
      reading manifest file 'src/greenlet.egg-info/SOURCES.txt'
      reading manifest template 'MANIFEST.in'
      warning: no previously-included files found matching 'benchmarks/*.json'
      no previously-included directories found matching 'docs/_build'
      warning: no files found matching '*.py' under directory 'appveyor'
      warning: no previously-included files matching '*.pyc' found anywhere in distribution
      warning: no previously-included files matching '*.pyd' found anywhere in distribution
      warning: no previously-included files matching '*.so' found anywhere in distribution
      warning: no previously-included files matching '.coverage' found anywhere in distribution
      adding license file 'LICENSE'
      adding license file 'LICENSE.PSF'
      writing manifest file 'src/greenlet.egg-info/SOURCES.txt'
      copying src/greenlet/CObjects.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyGreenlet.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyGreenletUnswitchable.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/PyModule.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TBrokenGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TExceptionState.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TGreenlet.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TGreenletGlobals.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TMainGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TPythonState.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TStackState.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TThreadState.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TThreadStateCreator.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TThreadStateDestroy.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/TUserGreenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet.cpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet.h -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_allocator.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_compiler_compat.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_cpython_compat.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_exceptions.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_internal.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_refs.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_slp_switch.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/greenlet_thread_support.hpp -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/slp_platformselect.h -> build/lib.linux-x86_64-cpython-314/greenlet
      copying src/greenlet/tests/_test_extension.c -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/tests/_test_extension_cpp.cpp -> build/lib.linux-x86_64-cpython-314/greenlet/tests
      copying src/greenlet/platform/setup_switch_x64_masm.cmd -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_aarch64_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_alpha_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_amd64_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm32_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm32_ios.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm64_masm.asm -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm64_masm.obj -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_arm64_msvc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_csky_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_loongarch64_linux.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_m68k_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_mips_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc64_aix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc64_linux.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_aix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_linux.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_macosx.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_ppc_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_riscv_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_s390_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_sh_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_sparc_sun_gcc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x32_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x64_masm.asm -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x64_masm.obj -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x64_msvc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x86_msvc.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      copying src/greenlet/platform/switch_x86_unix.h -> build/lib.linux-x86_64-cpython-314/greenlet/platform
      running build_ext
      building 'greenlet._greenlet' extension
      creating build/temp.linux-x86_64-cpython-314/src/greenlet
      g++ -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O3 -Wall -fPIC -I/opt/python-3.14.0b1/include/python3.14 -c src/greenlet/greenlet.cpp -o build/temp.linux-x86_64-cpython-314/src/greenlet/greenlet.o
      In file included from src/greenlet/greenlet.cpp:36:
      src/greenlet/TPythonState.cpp: In member function ‘void greenlet::PythonState::operator<<(const PyThreadState*)’:
      src/greenlet/TPythonState.cpp:137:31: error: ‘Py_C_RECURSION_LIMIT’ was not declared in this scope
        137 |     this->c_recursion_depth = Py_C_RECURSION_LIMIT - tstate->c_recursion_remaining;
            |                               ^~~~~~~~~~~~~~~~~~~~
      src/greenlet/TPythonState.cpp:137:62: error: ‘const PyThreadState’ {aka ‘const struct _ts’} has no member named ‘c_recursion_remaining’; did you mean ‘py_recursion_remaining’?
        137 |     this->c_recursion_depth = Py_C_RECURSION_LIMIT - tstate->c_recursion_remaining;
            |                                                              ^~~~~~~~~~~~~~~~~~~~~
            |                                                              py_recursion_remaining
      src/greenlet/TPythonState.cpp: In member function ‘void greenlet::PythonState::operator>>(PyThreadState*)’:
      src/greenlet/TPythonState.cpp:212:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘c_recursion_remaining’; did you mean ‘py_recursion_remaining’?
        212 |     tstate->c_recursion_remaining = Py_C_RECURSION_LIMIT - this->c_recursion_depth;
            |             ^~~~~~~~~~~~~~~~~~~~~
            |             py_recursion_remaining
      src/greenlet/TPythonState.cpp:212:37: error: ‘Py_C_RECURSION_LIMIT’ was not declared in this scope
        212 |     tstate->c_recursion_remaining = Py_C_RECURSION_LIMIT - this->c_recursion_depth;
            |                                     ^~~~~~~~~~~~~~~~~~~~
      error: command '/usr/bin/g++' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for greenlet
Failed to build greenlet
ERROR: Failed to build one or more wheels

[zzzeek]

@jamadden want to reopen here?

[vstinner]

I wrote #445 to port greenlet to Python 3.14 beta 1.

[jamadden]

Thank you @vstinner! I'd been tagged on the CPython issue where that changed, I just hadn't had a chance to get to it yet.