Recipe for argon2-cffi by Arjun-Somvanshi · Pull Request #2398 · kivy/python-for-android

Arjun-Somvanshi · 2021-01-03T13:42:16Z

What have I done so far?

In my code I have been using the pycryptodome lib which already has a recipe in p4a, since it seemed to have the same dependencies as argon2-cffi, that being: cffi and setuptools, I decided to use it's code for argon2's recipe. After I did the fork I added the dependency in my spec file. It is visible that it got downloaded (but probably is not getting built properly) but always fails when I run the app. This is the error I got on a logcat after the build was done:

      `working: Traceback (most recent call last):                                             �[0m
       working:   File "setup.py", line 13, in <module>                                        �[0m
       working:     from setuptools import find_packages, setup                                �[0m
       working: ModuleNotFoundError: No module named 'setuptools'                              �[0m

Command failed: /usr/bin/python3 -m pythonforandroid.toolchain create --dist_name=reminiscor --bootstrap=sdl2 --requirements=python3,kivy,pycryptodome,argon2-cffi --arch armeabi-v7a --copy-libs --color=always --storage-dir="/home/kivy/Reminiscor/.buildozer/android/platform/build-armeabi-v7a" --ndk-api=21

inclement · 2021-01-03T13:46:00Z

Try using a CompiledComponentsPythonRecipe - you'll need to do something like this to get the argon C components to build.

Arjun-Somvanshi · 2021-01-03T14:04:18Z

I tried to look into what is a CompiledComponentsPythonRecipe but this is what it says in the documentation:

Using a CompiledComponentsPythonRecipe

This is similar to a CythonRecipe but is intended for modules like numpy which include compiled but non-cython components. It uses a similar mechanism to compile with the right environment.

This isn’t documented yet because it will probably be changed so that CythonRecipe inherits from it (to avoid code duplication).

Arjun-Somvanshi · 2021-01-03T14:15:23Z

Is this link relevant to what you think I should look for : (https://askpythonquestions.com/2020/12/13/kivy-python-for-android-how-to-create-custom-recipes/)

obfusk · 2021-01-03T14:15:42Z

You may (also) need to set call_hostpython_via_targetpython = False; e.g.

from pythonforandroid.recipe import CompiledComponentsPythonRecipe


class Argon2Recipe(CompiledComponentsPythonRecipe):
    version = '20.1.0'
    url = 'https://github.com/hynek/argon2-cffi/archive/master.zip'
    depends = ['setuptools', 'cffi']
    call_hostpython_via_targetpython = False


recipe = Argon2Recipe()

obfusk · 2021-01-03T14:37:55Z

pythonforandroid/recipes/argon2-cffi/__init__.py

+    url = 'https://github.com/hynek/argon2-cffi/archive/master.zip'
+    depends = ['setuptools', 'cffi']
+    call_hostpython_via_targetpython = False
+


flake8 requires an extra blank line here.

it doesn't like the fact that the "blank line" contains whitespace.

Arjun-Somvanshi · 2021-01-03T15:36:28Z

From what I understand it's still not able to compile the c?

Arjun-Somvanshi · 2021-01-03T15:42:18Z

From what I understand it's still not able to compile the c?

It can't find the argon.h file do I need to include the c code somehow?

obfusk · 2021-01-03T15:46:06Z

It can't find the argon.h file do I need to include the c code somehow?

Looks like it uses a git submodule for the extras/libargon2 directory, which is not included in the .zip.

obfusk · 2021-01-03T15:50:44Z

Try using url = 'git+https://github.com/hynek/argon2-cffi@{version}'. I think that will include submodules.

Arjun-Somvanshi · 2021-01-03T15:50:47Z

It can't find the argon.h file do I need to include the c code somehow?

Looks like it uses a git submodule for the extras/libargon2 directory, which is not included in the .zip.

shall I make my own zip with the other repo included inside this one from: https://github.com/p-h-c/phc-winner-argon2/tree/62358ba2123abd17fccf2a108a301d4b52c01a7c

Arjun-Somvanshi · 2021-01-03T15:51:33Z

Try using url = 'git+https://github.com/hynek/argon2-cffi@{version}'.

okay, sorry I typed my thing before seeing your comment

obfusk · 2021-01-03T15:54:23Z

Try using url = 'git+https://github.com/hynek/argon2-cffi@{version}'. I think that will include submodules.

Actually, I think that should just be url = 'git+https://github.com/hynek/argon2-cffi'.

Normally, you should include {version} in the url, but the @{version} syntax for git urls is for pip, whereas p4a seems to use the recipe's .version instead (and check out that tag/branch).

obfusk · 2021-01-03T15:56:10Z

pythonforandroid/recipes/argon2-cffi/__init__.py

 class Argon2Recipe(CompiledComponentsPythonRecipe):
    version = '20.1.0'
-    url = 'https://github.com/hynek/argon2-cffi/archive/master.zip'
+    url = 'url = 'git+https://github.com/hynek/argon2-cffi@{version}'


that doesn't look quite right :)

this is my first pr ever, sorry if it's a bit shabby.

np. though you may want to do a rebase and squash all those intermediate commits when it's working.

yeah okay I will do that

obfusk · 2021-01-03T16:07:15Z

pythonforandroid/recipes/argon2-cffi/__init__.py

+
+class Argon2Recipe(CompiledComponentsPythonRecipe):
+    version = '20.1.0'
+    url = 'git+https://github.com/hynek/argon2-cffi@{version}'


I think you need to remove the @{version} here. Sorry.

np. I didn't see you edited that message.

Arjun-Somvanshi · 2021-01-03T17:26:17Z

Okay, I don't quite understand what the issue is now? It seemed like it almost passed it this time though

obfusk · 2021-01-03T19:03:50Z

I think the problem is that p4a calls setup_ext but not setup_clib.
Try adding build_cmd = 'build' to the recipe. That should call both.

Arjun-Somvanshi · 2021-01-04T13:58:53Z

You may (also) want to try building the recipe on your own computer instead.
With buildozer, you can use e.g.
p4a.branch = develop
p4a.local_recipes = ./my-p4a-recipes

I don't understand how the p4a.local_recipes works, this is what I have so far:

# (str) python-for-android fork to use, defaults to upstream (kivy)
p4a.fork = Arjun-Somvanshi

# (str) python-for-android branch to use, defaults to master
p4a.branch = develop

# (str) python-for-android git clone directory (if empty, it will be automatically cloned from github)
#p4a.source_dir =

# (str) The directory in which python-for-android should look for your own build recipes (if any)
#p4a.local_recipes =

If I am using my own fork, then why does it need the local_recipes thing?

Arjun-Somvanshi · 2021-01-04T13:59:52Z

Incase you are wondering if I have done a build with those settings above in me .spec file, here is the output
build_output.txt

obfusk · 2021-01-04T14:09:40Z

If I am using my own fork, then why does it need the local_recipes thing?

In that case it doesn't :)
I'm using it so that I don't need to use a fork (and keep it up to date) just to have an extra recipe.

Arjun-Somvanshi · 2021-01-04T14:14:33Z

Incase you are wondering if I have done a build with those settings above in me .spec file, here is the output
build_output.txt

Oh okay, so if I use a local recipe do I still need to specify the package in the requirement field? Also what do you think of that build output I uploaded, is that some mistake on my part?

obfusk · 2021-01-04T20:42:08Z

This recipe seems to work:

from pythonforandroid.recipe import CompiledComponentsPythonRecipe


class Argon2Recipe(CompiledComponentsPythonRecipe):
    version = '20.1.0'
    url = 'git+https://github.com/hynek/argon2-cffi'
    depends = ['setuptools', 'cffi']
    call_hostpython_via_targetpython = False
    build_cmd = 'build'

    def get_recipe_env(self, arch):
        env = super().get_recipe_env(arch)
        env['ARGON2_CFFI_USE_SSE2'] = '0'
        return env


recipe = Argon2Recipe()

obfusk · 2021-01-04T21:49:22Z

You may run into #2400 when testing that locally.

AndreMiras

Thanks for the PR and the follow up changes with the help of @inclement and @obfusk
Looking good, will merge after the CI builds green

pythonforandroid/recipes/argon2-cffi/__init__.py

Arjun-Somvanshi · 2021-01-05T04:15:37Z

i'll do a rebase and squash the commits

Arjun-Somvanshi · 2021-01-05T06:03:17Z

I just added the change in the url

Arjun-Somvanshi · 2021-01-05T06:36:01Z

yeah, so as I thought, the libargon2 is missing hence we used that url from before, so this time I am gonna make the changes, squash the commits, and force push.

Arjun-Somvanshi · 2021-01-05T08:24:20Z

I am getting a lot of merge conflicts even though I followed the steps to a git rebase properly

AndreMiras · 2021-01-05T08:39:10Z

Thanks for giving it a try 👍
Weird for the rebase. I can't think of what would have made conflicts, but that's fine we'll try to deal without.
FYI what I would have tried is:

git fetch --all --prune
# squashing
git reset --soft HEAD~17
git commit --amend
# rebasing
git rebase upstream/develop # given the remote is called upstream

I'll try to at least squash from the GitHub interface at least because it allows to

Arjun-Somvanshi · 2021-01-05T08:58:38Z

Thanks for giving it a try 👍
Weird for the rebase. I can't think of what would have made conflicts, but that's fine we'll try to deal without.
FYI what I would have tried is:
git fetch --all --prune
# squashing
git reset --soft HEAD~17
git commit --amend
# rebasing
git rebase upstream/develop # given the remote is called upstream
I'll try to at least squash from the GitHub interface at least because it allows to
I'm sorry, I was trying to post the comment and closed the pr by mistake, the issue I think is that I mixed up the commits, I did a few directly from github instead of the command line

Arjun-Somvanshi · 2021-01-05T09:46:55Z

okay tests passed, no more commits now. Just gotta squash the commits from before.

Arjun-Somvanshi · 2021-01-05T09:56:20Z

@AndreMiras I tried the git commands you suggested the git log on my local repo gives the 17 commits even after running those commands

AndreMiras · 2021-01-05T11:44:03Z

No problem, thanks again for trying 👍

AndreMiras

All good thanks!

obfusk · 2021-01-05T15:37:40Z

git fetch --all --prune
# squashing
git reset --soft HEAD~17
git commit --amend
# rebasing
git rebase upstream/develop # given the remote is called upstream

Using an interactive rebase to squash always works for me:

git fetch --all
git rebase -i upstream/develop

obfusk · 2021-01-05T16:20:42Z

yeah, so as I thought, the libargon2 is missing hence we used that url from before, so this time I am gonna make the changes, squash the commits, and force push.

An alternative solution would be to add a separate recipe for libargon2 and depend on that.
This might be a good idea anyway, since that can then be updated separately (and shared by other recipes).

Arjun-Somvanshi · 2021-01-05T16:31:40Z

@obfusk just give me a few days, I am in the middle of my semester exams, I will get back to this and clean it up as well as try and do this the right way. :) Thanks a lot for your help.

obfusk · 2021-01-05T16:52:45Z

just give me a few days, I am in the middle of my semester exams

np. There's no hurry :) Good luck!

I will get back to this and clean it up

The current version is squashed and merged. So it's already fine :)

as well as try and do this the right way.

There's nothing "wrong" now. Using a separate libargon2 recipe would just be a nice improvement IMHO. And should be a separate PR.

* testing argon2-cffi * Using CompiledComponentsPythonRecipe * argon2-cffi recipe

Arjun-Somvanshi and others added 4 commits December 29, 2020 11:14

testing argon2-cffi

d5d8944

retrying argon2-cffi test

1f6c5f4

Update __init__.py

d3a2710

Update __init__.py

50de293

Arjun-Somvanshi added 2 commits January 3, 2021 19:51

Using CompiledComponentsPythonRecipe

06720ee

Using CompiledComponentsPythonRecipe

10e6bca

obfusk reviewed Jan 3, 2021

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Arjun-Somvanshi added 4 commits January 3, 2021 20:09

Update __init__.py

e23be18

Update __init__.py

bc05d83

adding the extra lines

8fbb4cd

removing whitespace from line 10 (jeez)

a396f06

url change cause the extras of argon2 were excluded

1c2fb73

obfusk reviewed Jan 3, 2021

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Update __init__.py

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obfusk reviewed Jan 3, 2021

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remove @Version

981c01b

added build_cmd

ff3f43f

Update __init__.py

f5146fd

AndreMiras previously approved these changes Jan 5, 2021

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pythonforandroid/recipes/argon2-cffi/__init__.py Show resolved Hide resolved

Recipe for argon2-cffi

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Arjun-Somvanshi dismissed AndreMiras’s stale review via 5b37ba7 January 5, 2021 06:02

Arjun-Somvanshi added 2 commits January 5, 2021 13:42

argon2-cffi recipe

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argon2-cffi recipe final changes

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Arjun-Somvanshi closed this Jan 5, 2021

Arjun-Somvanshi reopened this Jan 5, 2021

AndreMiras approved these changes Jan 5, 2021

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AndreMiras merged commit aadcfc4 into kivy:develop Jan 5, 2021

vesellov pushed a commit to vesellov/python-for-android that referenced this pull request Feb 10, 2021

Recipe for argon2-cffi (kivy#2398)

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* testing argon2-cffi * Using CompiledComponentsPythonRecipe * argon2-cffi recipe

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Arjun-Somvanshi commented Jan 3, 2021

What have I done so far?

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