prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Python 3.10 cffi build fails
  <!--
  The issue tracker is a tool to address bugs NOT a support platform.
  Please use the Discord community or Stack Overflow for support questions,
  more information at https://github.com/kivy/python-for-android#support
  -->
  
  ### Checklist
  
  - [ x] the issue is indeed a bug and not a support request
  - [ x] issue doesn't already exist: https://github.com/kivy/python-for-android/issues
  - [ x] I have a short, runnable example that reproduces the issue
  - [x ] I reproduced the problem with the latest development version (`p4a.branch = develop`)
  - [ x] I used the grave accent (aka backticks) to format code or logs when appropriated
  
  ### Versions
  
  - Python: 2.10.6 (OS)
  - OS: Ubuntu 22.04.2
  - Kivy: 2.2.0
  - Cython: 0.29.33
  - OpenJDK:
  
  ### Description
  
  p4a v2023.5.21  build of cffi fails
  
  ### buildozer.spec
  
  
  Spec file:
  ```
  requirements = python3,kivy, cffi
  ```
  
  ### Logs
  
  ```
  /home/bobf/.buildozer/android/platform/android-ndk-r25b/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -target aarch64-linux-android21 -fomit-frame-pointer -march=armv8-a -fPIC -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -target aarch64-linux-android21 -fomit-frame-pointer -march=armv8-a -fPIC -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libffi/arm64-v8a__ndk_target_21/libffi/include -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Include -DANDROID -I/home/bobf/.buildozer/android/platform/android-ndk-r25b/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/python-installs/apptest/arm64-v8a/include/python3.1 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/hostpython3/desktop/hostpython3/Include -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/hostpython3/desktop/hostpython3/native-build -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.10/c/_cffi_backend.o
  c/_cffi_backend.c:407:23: error: expression is not assignable
          Py_REFCNT(ct) = 43;
          ~~~~~~~~~~~~~ ^
  c/_cffi_backend.c:410:23: error: expression is not assignable
          Py_REFCNT(ct) = 0;
          ~~~~~~~~~~~~~ ^
  
  ```
  
  
  </issue>
  <code>
  [start of pythonforandroid/recipes/cffi/__init__.py]
  1 import os
  2 from pythonforandroid.recipe import CompiledComponentsPythonRecipe
  3 
  4 
  5 class CffiRecipe(CompiledComponentsPythonRecipe):
  6     """
  7     Extra system dependencies: autoconf, automake and libtool.
  8     """
  9     name = 'cffi'
  10     version = '1.13.2'
  11     url = 'https://pypi.python.org/packages/source/c/cffi/cffi-{version}.tar.gz'
  12 
  13     depends = ['setuptools', 'pycparser', 'libffi']
  14 
  15     patches = ['disable-pkg-config.patch']
  16 
  17     # call_hostpython_via_targetpython = False
  18     install_in_hostpython = True
  19 
  20     def get_hostrecipe_env(self, arch=None):
  21         # fixes missing ffi.h on some host systems (e.g. gentoo)
  22         env = super().get_hostrecipe_env(arch)
  23         libffi = self.get_recipe('libffi', self.ctx)
  24         includes = libffi.get_include_dirs(arch)
  25         env['FFI_INC'] = ",".join(includes)
  26         return env
  27 
  28     def get_recipe_env(self, arch=None):
  29         env = super().get_recipe_env(arch)
  30         libffi = self.get_recipe('libffi', self.ctx)
  31         includes = libffi.get_include_dirs(arch)
  32         env['CFLAGS'] = ' -I'.join([env.get('CFLAGS', '')] + includes)
  33         env['CFLAGS'] += ' -I{}'.format(self.ctx.python_recipe.include_root(arch.arch))
  34         env['LDFLAGS'] = (env.get('CFLAGS', '') + ' -L' +
  35                           self.ctx.get_libs_dir(arch.arch))
  36         env['LDFLAGS'] += ' -L{}'.format(os.path.join(self.ctx.bootstrap.build_dir, 'libs', arch.arch))
  37         # required for libc and libdl
  38         env['LDFLAGS'] += ' -L{}'.format(arch.ndk_lib_dir_versioned)
  39         env['PYTHONPATH'] = ':'.join([
  40             self.ctx.get_site_packages_dir(arch),
  41             env['BUILDLIB_PATH'],
  42         ])
  43         env['LDFLAGS'] += ' -L{}'.format(self.ctx.python_recipe.link_root(arch.arch))
  44         env['LDFLAGS'] += ' -lpython{}'.format(self.ctx.python_recipe.link_version)
  45         return env
  46 
  47 
  48 recipe = CffiRecipe()
  49
  [end of pythonforandroid/recipes/cffi/__init__.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/pythonforandroid/recipes/cffi/__init__.py b/pythonforandroid/recipes/cffi/__init__.py
  --- a/pythonforandroid/recipes/cffi/__init__.py
  +++ b/pythonforandroid/recipes/cffi/__init__.py
  @@ -7,7 +7,7 @@
       Extra system dependencies: autoconf, automake and libtool.
       """
       name = 'cffi'
  -    version = '1.13.2'
  +    version = '1.15.1'
       url = 'https://pypi.python.org/packages/source/c/cffi/cffi-{version}.tar.gz'
   
       depends = ['setuptools', 'pycparser', 'libffi']
  
verification_info: {"golden_diff": "diff --git a/pythonforandroid/recipes/cffi/__init__.py b/pythonforandroid/recipes/cffi/__init__.py\n--- a/pythonforandroid/recipes/cffi/__init__.py\n+++ b/pythonforandroid/recipes/cffi/__init__.py\n@@ -7,7 +7,7 @@\n     Extra system dependencies: autoconf, automake and libtool.\n     \"\"\"\n     name = 'cffi'\n-    version = '1.13.2'\n+    version = '1.15.1'\n     url = 'https://pypi.python.org/packages/source/c/cffi/cffi-{version}.tar.gz'\n \n     depends = ['setuptools', 'pycparser', 'libffi']\n", "issue": "Python 3.10 cffi build fails\n<!--\r\nThe issue tracker is a tool to address bugs NOT a support platform.\r\nPlease use the Discord community or Stack Overflow for support questions,\r\nmore information at https://github.com/kivy/python-for-android#support\r\n-->\r\n\r\n### Checklist\r\n\r\n- [ x] the issue is indeed a bug and not a support request\r\n- [ x] issue doesn't already exist: https://github.com/kivy/python-for-android/issues\r\n- [ x] I have a short, runnable example that reproduces the issue\r\n- [x ] I reproduced the problem with the latest development version (`p4a.branch = develop`)\r\n- [ x] I used the grave accent (aka backticks) to format code or logs when appropriated\r\n\r\n### Versions\r\n\r\n- Python: 2.10.6 (OS)\r\n- OS: Ubuntu 22.04.2\r\n- Kivy: 2.2.0\r\n- Cython: 0.29.33\r\n- OpenJDK:\r\n\r\n### Description\r\n\r\np4a v2023.5.21  build of cffi fails\r\n\r\n### buildozer.spec\r\n\r\n\r\nSpec file:\r\n```\r\nrequirements = python3,kivy, cffi\r\n```\r\n\r\n### Logs\r\n\r\n```\r\n/home/bobf/.buildozer/android/platform/android-ndk-r25b/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -target aarch64-linux-android21 -fomit-frame-pointer -march=armv8-a -fPIC -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -target aarch64-linux-android21 -fomit-frame-pointer -march=armv8-a -fPIC -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/libffi/arm64-v8a__ndk_target_21/libffi/include -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/python3/arm64-v8a__ndk_target_21/python3/Include -DANDROID -I/home/bobf/.buildozer/android/platform/android-ndk-r25b/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/python-installs/apptest/arm64-v8a/include/python3.1 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/hostpython3/desktop/hostpython3/Include -I/home/bobf/ex/hello/.buildozer/android/platform/build-arm64-v8a/build/other_builds/hostpython3/desktop/hostpython3/native-build -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.10/c/_cffi_backend.o\r\nc/_cffi_backend.c:407:23: error: expression is not assignable\r\n        Py_REFCNT(ct) = 43;\r\n        ~~~~~~~~~~~~~ ^\r\nc/_cffi_backend.c:410:23: error: expression is not assignable\r\n        Py_REFCNT(ct) = 0;\r\n        ~~~~~~~~~~~~~ ^\r\n\r\n```\r\n\n", "before_files": [{"content": "import os\nfrom pythonforandroid.recipe import CompiledComponentsPythonRecipe\n\n\nclass CffiRecipe(CompiledComponentsPythonRecipe):\n    \"\"\"\n    Extra system dependencies: autoconf, automake and libtool.\n    \"\"\"\n    name = 'cffi'\n    version = '1.13.2'\n    url = 'https://pypi.python.org/packages/source/c/cffi/cffi-{version}.tar.gz'\n\n    depends = ['setuptools', 'pycparser', 'libffi']\n\n    patches = ['disable-pkg-config.patch']\n\n    # call_hostpython_via_targetpython = False\n    install_in_hostpython = True\n\n    def get_hostrecipe_env(self, arch=None):\n        # fixes missing ffi.h on some host systems (e.g. gentoo)\n        env = super().get_hostrecipe_env(arch)\n        libffi = self.get_recipe('libffi', self.ctx)\n        includes = libffi.get_include_dirs(arch)\n        env['FFI_INC'] = \",\".join(includes)\n        return env\n\n    def get_recipe_env(self, arch=None):\n        env = super().get_recipe_env(arch)\n        libffi = self.get_recipe('libffi', self.ctx)\n        includes = libffi.get_include_dirs(arch)\n        env['CFLAGS'] = ' -I'.join([env.get('CFLAGS', '')] + includes)\n        env['CFLAGS'] += ' -I{}'.format(self.ctx.python_recipe.include_root(arch.arch))\n        env['LDFLAGS'] = (env.get('CFLAGS', '') + ' -L' +\n                          self.ctx.get_libs_dir(arch.arch))\n        env['LDFLAGS'] += ' -L{}'.format(os.path.join(self.ctx.bootstrap.build_dir, 'libs', arch.arch))\n        # required for libc and libdl\n        env['LDFLAGS'] += ' -L{}'.format(arch.ndk_lib_dir_versioned)\n        env['PYTHONPATH'] = ':'.join([\n            self.ctx.get_site_packages_dir(arch),\n            env['BUILDLIB_PATH'],\n        ])\n        env['LDFLAGS'] += ' -L{}'.format(self.ctx.python_recipe.link_root(arch.arch))\n        env['LDFLAGS'] += ' -lpython{}'.format(self.ctx.python_recipe.link_version)\n        return env\n\n\nrecipe = CffiRecipe()\n", "path": "pythonforandroid/recipes/cffi/__init__.py"}]}