Buildozer: ImportError: cannot import name 'main'

Created on 8 Apr 2020 · 12Comments · Source: kivy/buildozer

Build failed while trying to install python dependancies :

[INFO]:    *** PYTHON PACKAGE / PROJECT INSTALL STAGE ***
[INFO]:    The requirements (certifi, gpxpy, oscpy, plyer) don't have recipes, attempting to install them with pip
[INFO]:    If this fails, it may mean that the module has compiled components and needs a recipe.
[INFO]:    -> directory context /home/user/hostcwd/.buildozer/android/platform/build-arm64-v8a/build
stty: 'standard input': Inappropriate ioctl for device
[INFO]:    -> running virtualenv --python=python3 venv
Exception in thread background thread for pid 38291:                                               
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 1540, in wrap
    fn(*args, **kwargs)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 2459, in background_thread
    handle_exit_code(exit_code)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 2157, in fn
    return self.command.handle_command_exit_code(exit_code)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 815, in handle_command_exit_code
    raise exc
sh.ErrorReturnCode_1: 

  RAN: /home/user/.local/bin/virtualenv --python=python3 venv

  STDOUT:
Traceback (most recent call last):
  File "/home/user/.local/bin/virtualenv", line 7, in <module>
    from virtualenv import main
ImportError: cannot import name 'main'


  STDERR:

Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 1212, in <module>
    main()
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/entrypoints.py", line 18, in main
    ToolchainCL()
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 680, in __init__
    getattr(self, args.subparser_name.replace('-', '_'))(args)
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 154, in wrapper_func
    build_dist_from_args(ctx, dist, args)
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 212, in build_dist_from_args
    args, "ignore_setup_py", False
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 603, in build_recipes
    ignore_setup_py=ignore_project_setup_py
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 773, in run_pymodules_install
    'venv'
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/logger.py", line 167, in shprint
    for line in output:
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 863, in next
    self.wait()
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 792, in wait
    self.handle_command_exit_code(exit_code)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 815, in handle_command_exit_code
    raise exc
sh.ErrorReturnCode_1: 

  RAN: /home/user/.local/bin/virtualenv --python=python3 venv

  STDOUT:
Traceback (most recent call last):
  File "/home/user/.local/bin/virtualenv", line 7, in <module>
    from virtualenv import main
ImportError: cannot import name 'main'

Versions

Python: The one use in the Dockerfile
OS: The one use in the Dockerfile
Buildozer: master

Description

git clone https://github.com/kivy/buildozer
cd buildozer
docker build --tag=buildozer .
mkdir test_buildozer
cd test_buildozer
docker run --volume "${HOME}/.buildozer":/home/user/.buildozer:Z --volume "${PWD}":/home/user/hostcwd:Z buildozer android debug

Logs

[INFO]:    Postbuilding kivy for arm64-v8a
[INFO]:    # Installing pure Python modules
[INFO]:    *** PYTHON PACKAGE / PROJECT INSTALL STAGE ***
[INFO]:    The requirements (certifi, gpxpy, oscpy, plyer) don't have recipes, attempting to install them with pip
[INFO]:    If this fails, it may mean that the module has compiled components and needs a recipe.
[INFO]:    -> directory context /home/user/hostcwd/.buildozer/android/platform/build-arm64-v8a/build
stty: 'standard input': Inappropriate ioctl for device
[INFO]:    -> running virtualenv --python=python3 venv
Exception in thread background thread for pid 38291:                                               
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 1540, in wrap
    fn(*args, **kwargs)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 2459, in background_thread
    handle_exit_code(exit_code)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 2157, in fn
    return self.command.handle_command_exit_code(exit_code)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 815, in handle_command_exit_code
    raise exc
sh.ErrorReturnCode_1: 

  RAN: /home/user/.local/bin/virtualenv --python=python3 venv

  STDOUT:
Traceback (most recent call last):
  File "/home/user/.local/bin/virtualenv", line 7, in <module>
    from virtualenv import main
ImportError: cannot import name 'main'


  STDERR:


Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 1212, in <module>
    main()
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/entrypoints.py", line 18, in main
    ToolchainCL()
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 680, in __init__
    getattr(self, args.subparser_name.replace('-', '_'))(args)
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 154, in wrapper_func
    build_dist_from_args(ctx, dist, args)
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 212, in build_dist_from_args
    args, "ignore_setup_py", False
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 603, in build_recipes
    ignore_setup_py=ignore_project_setup_py
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/build.py", line 773, in run_pymodules_install
    'venv'
  File "/home/user/hostcwd/.buildozer/android/platform/python-for-android/pythonforandroid/logger.py", line 167, in shprint
    for line in output:
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 863, in next
    self.wait()
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 792, in wait
    self.handle_command_exit_code(exit_code)
  File "/home/user/.local/lib/python3.6/site-packages/sh.py", line 815, in handle_command_exit_code
    raise exc
sh.ErrorReturnCode_1: 

  RAN: /home/user/.local/bin/virtualenv --python=python3 venv

  STDOUT:
Traceback (most recent call last):
  File "/home/user/.local/bin/virtualenv", line 7, in <module>
    from virtualenv import main
ImportError: cannot import name 'main'


  STDERR:

# Command failed: /usr/bin/python3 -m pythonforandroid.toolchain create --dist_name=ohmy --bootstrap=sdl2 --requirements=plyer,kivy,requests,openssl,certifi,gpxpy,oscpy,android --arch arm64-v8a --copy-libs --color=always --storage-dir="/home/user/hostcwd/.buildozer/android/platform/build-arm64-v8a" --ndk-api=26
# ENVIRONMENT:
#     PATH = '/home/user/.buildozer/android/platform/apache-ant-1.9.4/bin:/home/user/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
#     HOSTNAME = '5755fc8b672b'
#     P4A_RELEASE_KEYSTORE = '/home/user/hostcwd/google_keystore.jks'
#     P4A_RELEASE_KEYSTORE_PASSWD = 'xxxx'
#     P4A_RELEASE_KEYALIAS_PASSWD = 'xxxx'
#     P4A_RELEASE_KEYALIAS = 'ohmy'
#     USER = 'user'
#     HOME_DIR = '/home/user'
#     WORK_DIR = '/home/user/hostcwd'
#     SRC_DIR = '/home/user/src'
#     LANG = 'en_US.UTF-8'
#     LANGUAGE = 'en_US.UTF-8'
#     LC_ALL = 'en_US.UTF-8'
#     HOME = '/home/user'
#     PACKAGES_PATH = '/home/user/.buildozer/android/packages'
#     ANDROIDSDK = '/home/user/.buildozer/android/platform/android-sdk'
#     ANDROIDNDK = '/home/user/.buildozer/android/platform/android-ndk-r19b'
#     ANDROIDAPI = '29'
#     ANDROIDMINAPI = '26'
# 
# Buildozer failed to execute the last command
# The error might be hidden in the log above this error
# Please read the full log, and search for it before
# raising an issue with buildozer itself.
# In case of a bug report, please add a full log with log_level = 2

bug

Source

brvier

👍1

Most helpful comment

Hi @pasteurjr, are you compiling with buildozer's docker image or by your own installation ?
If you build with docker please pull the latest image

docker pull kivy/buildozer

Then recreate your buildozer's container
If it's your own installation, please update pip and virtual env

pip install --upgrade pip virtualenv

If you have both python3 and python2 installed, be sure to upgrade python3 environment with

python3 -m pip install --upgrade pip virtualenv

Hope this will help you !

Sirfanas on 14 Apr 2020

👍4

All 12 comments

Thanks @brvier for reproducing the bug with docker in master. I'll try to look into it this week

AndreMiras on 8 Apr 2020

Wheels dependancy seems missing in the Dockerfile too :)

brvier on 8 Apr 2020

p4a.fork = kivy
p4a.branch = release-2020.04.01

Same error using older p4a repository, so probably not related to p4a changes :)
EDIT : oups i believe it was YYYY-DD-MM ... so that the newer not the older :)

brvier on 8 Apr 2020

Hi,
I got the same problem, after cloning buildozer repo's I was able to fix by changing the Dockerfile at line 78

As @brvier said, wheel was missing so I add it and I upgrade virtualenv

...
RUN pip3 install --user wheel Cython==0.28.6 ${SRC_DIR}
RUN python3 -m pip install -U pip virtualenv
...

The first one add wheel, the command will failed at the end because of 'bdist_wheel' error
The second will apply previous change without failing and will upgrade virtualenv

After building it I was able to create my apk !

Hope it will help you

PS: @AndreMiras Isn't it possible to make tag on Docker hub ? So we could just pull the previous image and use it to compile ? For eg in this case, even if I used a previous commit to build, it still crash because it was a venv dep's problem, so have a "fixed" image may help ?

Sirfanas on 8 Apr 2020

I also get the same error for python 2.7 (compiling Pillow)
Opening another pull request for python2.7

Sirfanas on 8 Apr 2020

I confirm the workaround.

brvier on 8 Apr 2020

Hello,
I tried using android runtime permissions, as suggested by @AndreMiras, but buildozer logcat still returns the error message:

 from virtualenv import main ImportError: cannot import name 'main'

Buildozer.spec :
requirements: python3, kivy, pyjnius
android.add_aars = support-compat-27.0.0.aar

main.py

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from permissions.location import check_permission, ask_permission

class ExampleRoot(BoxLayout):

def check_fine_location_permission(self):
    check_permission("android.permission.ACCESS_FINE_LOCATION")

def request_fine_location_permission(self):
    ask_permission("android.permission.ACCESS_FINE_LOCATION")

class ExampleApp(App):
def build(self):
return ExampleRoot()

if __name__ == '__main__':
ExampleApp().run()

permissions/location.py

from jnius import autoclass
from kivy.logger import Logger

PythonActivity = autoclass("org.kivy.android.PythonActivity").mActivity
Context = autoclass('android.content.Context')
ContextCompat = autoclass('android.support.v4.content.ContextCompat')

def check_permission(permission, activity=PythonActivity):
permission_status = ContextCompat.checkSelfPermission(activity,
permission)

Logger.info(permission_status)
permission_granted = 0 == permission_status
Logger.info("Permission Status: {}".format(permission_granted))
return permission_granted

def ask_permission(permission, activity=PythonActivity):
PythonActivity.requestPermissions([permission])

Any suggestion to fix this error?

Thanks a lot

pasteurjr on 14 Apr 2020

Hi @pasteurjr, are you compiling with buildozer's docker image or by your own installation ?
If you build with docker please pull the latest image

docker pull kivy/buildozer

Then recreate your buildozer's container
If it's your own installation, please update pip and virtual env

pip install --upgrade pip virtualenv

If you have both python3 and python2 installed, be sure to upgrade python3 environment with

python3 -m pip install --upgrade pip virtualenv

Hope this will help you !

Sirfanas on 14 Apr 2020

👍4

Thanks a lot @Sirfanas , it worked for me!

pasteurjr on 15 Apr 2020

@Sirfanas worked for me as well with Linux subsystem on Windows! Thank you.

dresber on 16 Apr 2020

Thanks @Sirfanas

crlqjx on 19 Apr 2020

When I’m building Kivy project into android app, I meet such problem:
——————————————————————
——————————————————————

System information:

Ubuntu18.04.4LTS
Python3.6.9(system)

pip3 list: pip(20.1) wheel(0.30.0) cython(0.29.17) certifi(2018.1.18) buildozer(1.0.1.dev0)

Plz help me

leonidas-timefly on 1 May 2020

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