Please tag a new release
Author: C0rn3jCreated Mar 15, 2026Updated Sep 4, 2026
Software Versions
- Python: 3.14
- OS: Arch Linux
- Kivy: 2.3.1
- Kivy installation method:
buildozer -v android debug
Describe the bug Kivy won't build due to an undefined long error - this seems fixed in master long time ago, but a new release hasn't been made, could one be please tagged?
Expected behavior It builds.
Code and Logs and screenshots
[INFO]: kivy first build failed (as expected)
[INFO]: Running cython where appropriate
[INFO]: Cythonize kivy/_event.pyx
[DEBUG]: -> running python3 -cimport sys; from Cython.Compiler.Main import setuptools_main; sys.exit(setuptools_main()); ./kivy/_event.pyx
[INFO]: Cythonize kivy/properties.pyx
[DEBUG]: -> running python3 -cimport sys; from Cython.Compiler.Main import setuptools_main; sys.exit(setuptools_main()); ./kivy/properties.pyx
[INFO]: Cythonize kivy/weakproxy.pyx
[DEBUG]: -> running python3 -cimport sys; from Cython.Compiler.Main import setuptools_main; sys.exit(setuptools_main()); ./kivy/weakproxy.pyx
[DEBUG]:
[DEBUG]: Error compiling Cython file:
[DEBUG]: ------------------------------------------------------------
[DEBUG]: ...
[DEBUG]:
[DEBUG]: def __int__(self):
[DEBUG]: return int(self.__ref__())
[DEBUG]:
[DEBUG]: def __long__(self):
[DEBUG]: return long(self.__ref__())
[DEBUG]: ^
[DEBUG]: ------------------------------------------------------------
[DEBUG]: kivy/weakproxy.pyx:257:15: undeclared name not builtin: long
Exception in thread background thread for pid 570157:
Traceback (most recent call last):
File "/usr/lib/python3.14/threading.py", line 1082, in _bootstrap_inner
self._context.run(self.run)
~~~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/lib/python3.14/threading.py", line 1024, in run
self._target(*self._args, **self._kwargs)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/sh.py", line 1642, in wrap
fn(*rgs, **kwargs)
~~^^^^^^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/sh.py", line 2647, in background_thread
handle_exit_code(exit_code)
~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/sh.py", line 2338, in fn
return self.command.handle_command_exit_code(exit_code)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/sh.py", line 823, in handle_command_exit_code
raise exc
sh.ErrorReturnCode_1:
RAN: /usr/bin/python3 '-cimport sys; from Cython.Compiler.Main import setuptools_main; sys.exit(setuptools_main());' ./kivy/weakproxy.pyx
STDOUT:
Error compiling Cython file:
------------------------------------------------------------
...
def __int__(self):
return int(self.__ref__())
def __long__(self):
return long(self.__ref__())
^
------------------------------------------------------------
kivy/weakproxy.pyx:257:15: undeclared name not builtin: long
STDERR:
Traceback (most recent call last):
File "<frozen runpy>", line 198, in _run_module_as_main
File "<frozen runpy>", line 88, in _run_code
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 1256, in <module>
main()
~~~~^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/entrypoints.py", line 18, in main
ToolchainCL()
~~~~~~~~~~~^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 685, in __init__
getattr(self, command)(args)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 104, in wrapper_func
build_dist_from_args(ctx, dist, args)
~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 163, in build_dist_from_args
build_recipes(build_order, python_modules, ctx,
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
getattr(args, "private", None),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...<2 lines>...
),
^^
)
^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 504, in build_recipes
recipe.build_arch(arch)
~~~~~~~~~~~~~~~~~^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py", line 1030, in build_arch
self.build_cython_components(arch)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py", line 1055, in build_cython_components
self.cythonize_build(env=env)
~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/recipes/kivy/__init__.py", line 38, in cythonize_build
super().cythonize_build(env, build_dir=build_dir)
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py", line 1103, in cythonize_build
self.cythonize_file(env, build_dir, join(root, filename))
~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/recipes/kivy/__init__.py", line 59, in cythonize_file
super().cythonize_file(env, build_dir, filename)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/recipe.py", line 1092, in cythonize_file
shprint(python_command, "-c"
~~~~~~~^^^^^^^^^^^^^^^^^^^^^
"import sys; from Cython.Compiler.Main import setuptools_main; sys.exit(setuptools_main());",
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
filename, *self.cython_args, _env=cyenv)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/ user/Projects/Tauon/.buildozer/android/platform/python-for-android/pythonforandroid/logger.py", line 167, in shprint
for line in output:
^^^^^^
File "/usr/lib/python3.14/site-packages/sh.py", line 879, in __next__
self.wait()
~~~~~~~~~^^
File "/usr/lib/python3.14/site-packages/sh.py", line 796, in wait
self.handle_command_exit_code(exit_code)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/sh.py", line 823, in handle_command_exit_code
raise exc
sh.ErrorReturnCode_1:
RAN: /usr/bin/python3 '-cimport sys; from Cython.Compiler.Main import setuptools_main; sys.exit(setuptools_main());' ./kivy/weakproxy.pyx
STDOUT:
Error compiling Cython file:
------------------------------------------------------------
...
def __int__(self):
return int(self.__ref__())
def __long__(self):
return long(self.__ref__())
^
------------------------------------------------------------
kivy/weakproxy.pyx:257:15: undeclared name not builtin: long
Additional context Add any other context about the problem here.
EDIT: This issue seems fixed by https://github.com/kivy/kivy/commit/5a1b27d7d3bdee6cedb55440bfae9c4e66fb3c68 from 10 months ago, changing this to a new release plea then...
Source: kivy/kivy