WIP: Python3 Support

[mkg20001]

ToDos:

• Upgrade gevent and toolchains
• https://github.com/HelloZeroNet/ZeroNet-kivy/blob/master/buildozer.spec#L44 Update requirements
• Upgrade ZeroNet and fix all remaining bugs
• Allow custom patches for ZeroNet and implement all the patches for mobile
• Prepare release

[mkg20001]

Compiling '/home/data/.buildozer/android/app/zero/plugins/Zeroname/updater/zeroname_updater.py'...
***   File "/home/data/.buildozer/android/app/zero/plugins/Zeroname/updater/zeroname_updater.py", line 13
    print "* Signing and Publishing..."
                                      ^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print("* Signing and Publishing...")?

[mkg20001]

@shortcutme The zeroname plugin needs to be converted to py3, after that I can release a beta of zn-kivy for py3

[mkg20001]

03-24 08:28:17.757 20460 20479 I zn      : [ERROR  ] [Unhandled exception] The 'greenlet>=0.4.14' distribution was not found and is required by the application

Added greenlet, it still complains

[mkg20001]

06-09 21:11:09.479 29301 29315 I zn      : - Starting ZeroNet...
06-09 21:11:09.484 29301 29315 I zn      : [ERROR  ] [Unhandled exception] No module named 'main'
06-09 21:11:09.484 29301 29315 I zn      : Traceback (most recent call last):
06-09 21:11:09.484 29301 29315 I zn      :   File "/home/data/.buildozer/android/app/zero/zeronet.py", line 18, in main
06-09 21:11:09.484 29301 29315 I zn      : ModuleNotFoundError: No module named 'main'
06-09 21:11:09.990 29301 29315 I zn      :  Traceback (most recent call last):
06-09 21:11:09.992 29301 29315 I zn      :    File "/home/data/.buildozer/android/app/zero/zeronet.py", line 18, in main
06-09 21:11:09.993 29301 29315 I zn      :  ModuleNotFoundError: No module named 'main'
06-09 21:11:09.994 29301 29315 I zn      :  
06-09 21:11:09.994 29301 29315 I zn      :  During handling of the above exception, another exception occurred:
06-09 21:11:09.995 29301 29315 I zn      :  
06-09 21:11:09.995 29301 29315 I zn      :  Traceback (most recent call last):
06-09 21:11:09.996 29301 29315 I zn      :    File "/home/data/.buildozer/android/app/platform_android.py", line 53, in wrapSentry
06-09 21:11:09.997 29301 29315 I zn      :    File "/home/data/.buildozer/android/app/service.py", line 61, in main
06-09 21:11:09.997 29301 29315 I zn      :    File "/home/data/.buildozer/android/app/zero/zeronet.py", line 28, in main
06-09 21:11:09.998 29301 29315 I zn      :  ModuleNotFoundError: No module named 'Config'
06-09 21:11:10.086 29301 29315 I python  : Python for android ended.
06-09 21:11:10.164 29089 29090 I adbd    : initializing functionfs

Now I'm stuck here

[HelloZeroNet]

There was a change recently and the main() entry point modified to start() (to be able to have update entry point beside the main), so I think you need to change zeronet.main() to zeronet.start() here:

ZeroNet-kivy/src/service.py

Line 61 in 2dc2421

zeronet.main()

[mkg20001]

@HelloZeroNet Applied it, but I think it will still fail because of the issue of not being able to find greenlet
It does install it via a custom recipe script and not via the standard way using pip, so some metadata seems to be missing and it can't load it
On the other hand when forcing a version it does install correctly via pip, but uses a precompiled greenlet which isn't compiled for arm

Any idea how to fix that? That would be (presumably) on of the last bugs to fix before I could do a release, or at least move py3 to master.

Edit: If you've got the time, you could jump through the different nightlies for ZeroNetN3 on F-Droid and see if you can make any sense of those errors. If you need help ripping apart the APK - it's partly non-standard what python-kivy does - to get the files, just ping me

[mkg20001]

This is where I'm stuck currently:

assets/_python_bundle/site-packages/greenlet-0.4.15.dist-info/ is missing in python-for-android recipe build
Without using recipe (using specific parameter), it fails to compile for the correct architecture. (This could either be missing cross-compile support in setup.py, or because it uses a wheel)

CompiledComponentsRecipe, which it currently is using, fails to generate that dist-info
Recipe recipe seems to do the same
Would have to try with CpythonRecipe, although I should test if it uses right py4a first

Really this is ANNOYING! Since this bit of files is what's missing until it FINALLY works!

[mkg20001]

/me throws out a 10$ bounty for who-ever manges to get this dependency/recipe issue resolved

#63

[saber28]

Hi, time flies! Two years passed and now we are working on py3 version on android. Thank you again for dev the new APK! I noticed you are facing problem of greenlet on kivy, I suggest putting greenlet before gevent in buildozer.spec#L44, because the order counts and greenlet is required by gevent. I am not sure it will solve the problem but anyway you could try it. After putting them in right order you can try downgrade greenlet or gevent again if it still doesn't work.

[mkg20001]

@saber28 Thanks, will try later this week

[mkg20001]

@saber28 Sadly this didn't fix it

[mkg20001]

Ok, this is taking forever
Merging this into master, since py3 is now default

[mkg20001]

For everyone watching this pr: feel free to chime in on https://t.me/zeronet_android while testing