Cannot build app with `supabase` dependency (because of `pydantic`/`pydantic-core`)

[kacper-the-programmer]

Description
I tried to build apk file from app that uses pyrebase and supabase modules but building app just stops, packaging stage freezes on installing python packages

Code example to reproduce the issue:

import flet as ft


def main(page: ft.Page):
    page.add(ft.SafeArea(ft.Text("Hello, Flet!")))


ft.app(main)

Describe the results you received:

Describe the results you expected:

Additional information you deem important (e.g. issue happens only occasionally):
building app for windows are outputting errors but building .exe is successful

Flet version (pip show flet):

Version: 0.19.0

Operating system:
Windows 11

[FeodorFitsner]

Could you paste the log as a text please?

[kacper-the-programmer]

Flutter bootstrap directory: C:\Users\HP\AppData\Local\Temp\flet_flutter_build_ynjwxcvsug
Creating Flutter bootstrap project...OK
Customizing app icons and splash images...Copying C:\Users\HP\Desktop\testlib\assets\icon.png to C:\Users\HP\AppData\Local\Temp\flet_flutter_build_ynjwxcvsug\images
OK
Generating app icons...Resolving dependencies in C:\Users\HP\AppData\Local\Temp\flet_flutter_build_ynjwxcvsug... (5.7s)
Got dependencies in C:\Users\HP\AppData\Local\Temp\flet_flutter_build_ynjwxcvsug.
Building package executable... (7.6s)
Built flutter_launcher_icons:flutter_launcher_icons.
════════════════════════════════════════════
FLUTTER LAUNCHER ICONS (v0.13.1)
════════════════════════════════════════════

• Creating default icons Android
• Overwriting the default Android launcher icon with a new icon
• Overwriting default iOS launcher icon with new icon
Creating Icons for Web...
Creating Icons for Windows...
Creating Icons for MacOS...

✓ Successfully generated launcher icons
OK
Generating splash screens...Building package executable... (8.4s)
Built flutter_native_splash:create.
[Android] Creating default splash images
[Android] Creating dark mode splash images
[Android] Creating default android12splash images
[Android] Creating dark mode android12splash images
[Android] Updating launch background(s) with splash image path...
[Android] - android/app/src/main/res/drawable/launch_background.xml
[Android] - android/app/src/main/res/drawable-night/launch_background.xml
[Android] - android/app/src/main/res/drawable-v21/launch_background.xml
[Android] - android/app/src/main/res/drawable-night-v21/launch_background.xml
[Android] Updating styles...
[Android] - android/app/src/main/res/values-v31/styles.xml
[Android] No android/app/src/main/res/values-v31/styles.xml found in your Android project
[Android] Creating android/app/src/main/res/values-v31/styles.xml and adding it to your Android project
[Android] - android/app/src/main/res/values-night-v31/styles.xml
[Android] No android/app/src/main/res/values-night-v31/styles.xml found in your Android project
[Android] Creating android/app/src/main/res/values-night-v31/styles.xml and adding it to your Android project
[Android] - android/app/src/main/res/values/styles.xml
[Android] - android/app/src/main/res/values-night/styles.xml
[iOS] Creating images
[iOS] Creating dark mode images
[iOS] Updating ios/Runner/Info.plist for status bar hidden/visible
[Web] Creating images
[Web] Creating images
[Web] Creating background images
[Web] Creating CSS
[Web] Updating index.html
╔════════════════════════════════════════════════════════════════════════════╗
║ NEED A GREAT FLUTTER DEVELOPER? ║
╠════════════════════════════════════════════════════════════════════════════╣
║ ║
║ I am available! Find me at https://www.linkedin.com/in/hansonjon/ ║
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╚════════════════════════════════════════════════════════════════════════════╝

✅ Native splash complete.
Now go finish building something awesome! 💪 You rock! 🤘🤩
Like the package? Please give it a 👍 here: https://pub.dev/packages/flutter_native_splash

OK
Packaging Python app...Building package executable... (4.2s)
Built serious_python:main.
Running package command
Creating asset directory: C:\Users\HP\AppData\Local\Temp\flet_flutter_build_ynjwxcvsug\app
Copying Python app from C:\Users\HP\Desktop\testlib to C:\Users\HP\AppData\Local\Temp\serious_python_temp1b8455a
Configured mobile platform with sitecustomize.py at C:\Users\HP\AppData\Local\Temp\serious_python_sitecustomizef05194fd\sitecustomize.py
Installing dependencies [flet-embed, supabase] with pip command to C:\Users\HP\AppData\Local\Temp\serious_python_temp1b8455a_pypackages_
Extracting Python distributive from C:\Users\HP\AppData\Local\Temp\cpython-3.11.6+20231002-x86_64-pc-windows-msvc-shared-install_only.tar.gz to C:\Users\HP\AppData\Local\Temp\hostpython3.11_ed741f4
VERBOSE: C:\Users\HP\AppData\Local\Temp\hostpython3.11_ed741f4\python\python.exe -m pip install --isolated --upgrade --target C:\Users\HP\AppData\Local\Temp\serious_python_temp1b8455a_pypackages_ flet-embed supabase
VERBOSE: Collecting flet-embed
VERBOSE: Obtaining dependency information for flet-embed from https://files.pythonhosted.org/packages/ad/d1/a6b49f4fae4611d8b083da1f95afd78e38ffb3898290ffc8dcec73324bf6/flet_embed-0.19.0-py3-none-any.whl.metadata
VERBOSE: Using cached flet_embed-0.19.0-py3-none-any.whl.metadata (1.1 kB)
VERBOSE: Collecting supabase
VERBOSE: Obtaining dependency information for supabase from https://files.pythonhosted.org/packages/64/31/2dffb58f9c6cd87464a46f828dfb93fb68deb71f0cae50315b9318e6c006/supabase-2.3.4-py3-none-any.whl.metadata
VERBOSE: Using cached supabase-2.3.4-py3-none-any.whl.metadata (8.5 kB)
VERBOSE: Collecting flet-runtime==0.19.0 (from flet-embed)
VERBOSE: Obtaining dependency information for flet-runtime==0.19.0 from https://files.pythonhosted.org/packages/dd/19/d0954189bf43dfdf5f9d059f5eb73d3374a13d5d4626a14f24fe35b55b43/flet_runtime-0.19.0-py3-none-any.whl.metadata
VERBOSE: Using cached flet_runtime-0.19.0-py3-none-any.whl.metadata (1.2 kB)
VERBOSE: Collecting flet-core==0.19.0 (from flet-runtime==0.19.0->flet-embed)
VERBOSE: Obtaining dependency information for flet-core==0.19.0 from https://files.pythonhosted.org/packages/cc/cc/520c8a7650b57c615a8be1679c5199a7f57ba59639d76cc7ea0a76bda19f/flet_core-0.19.0-py3-none-any.whl.metadata
VERBOSE: Using cached flet_core-0.19.0-py3-none-any.whl.metadata (1.1 kB)
VERBOSE: Collecting httpx<0.25.0,>=0.24.1 (from flet-runtime==0.19.0->flet-embed)
VERBOSE: Obtaining dependency information for httpx<0.25.0,>=0.24.1 from https://files.pythonhosted.org/packages/ec/91/e41f64f03d2a13aee7e8c819d82ee3aa7cdc484d18c0ae859742597d5aa0/httpx-0.24.1-py3-none-any.whl.metadata
VERBOSE: Using cached httpx-0.24.1-py3-none-any.whl.metadata (7.4 kB)
VERBOSE: Collecting oauthlib<4.0.0,>=3.2.2 (from flet-runtime==0.19.0->flet-embed)
VERBOSE: Using cached oauthlib-3.2.2-py3-none-any.whl (151 kB)
VERBOSE: Collecting repath<0.10.0,>=0.9.0 (from flet-core==0.19.0->flet-runtime==0.19.0->flet-embed)
VERBOSE: Using cached repath-0.9.0-py3-none-any.whl (4.7 kB)
VERBOSE: Collecting gotrue<3.0,>=1.3 (from supabase)
VERBOSE: Obtaining dependency information for gotrue<3.0,>=1.3 from https://files.pythonhosted.org/packages/bd/9f/3f7fc69b8d1111846f4990b3a063a06c61d6af17a58424b5c4b321972e3e/gotrue-2.1.0-py3-none-any.whl.metadata
VERBOSE: Using cached gotrue-2.1.0-py3-none-any.whl.metadata (5.9 kB)
VERBOSE: Collecting postgrest<0.16.0,>=0.10.8 (from supabase)
VERBOSE: Obtaining dependency information for postgrest<0.16.0,>=0.10.8 from https://files.pythonhosted.org/packages/17/d9/a377da91d54b43d9bd2ea97a29a858bd646f5b2e5ba0521046c95a0ac4e4/postgrest-0.15.0-py3-none-any.whl.metadata
VERBOSE: Using cached postgrest-0.15.0-py3-none-any.whl.metadata (5.1 kB)
VERBOSE: Collecting realtime<2.0.0,>=1.0.0 (from supabase)
VERBOSE: Obtaining dependency information for realtime<2.0.0,>=1.0.0 from https://files.pythonhosted.org/packages/2e/c0/b0be23f55642d0018a5c1e3c5e6aeda11fe5e18e24b5f969636b10fc34a5/realtime-1.0.2-py3-none-any.whl.metadata
VERBOSE: Using cached realtime-1.0.2-py3-none-any.whl.metadata (2.6 kB)
VERBOSE: Collecting storage3<0.8.0,>=0.5.3 (from supabase)
VERBOSE: Obtaining dependency information for storage3<0.8.0,>=0.5.3 from https://files.pythonhosted.org/packages/fd/c9/6add986d87c11eab4e8e1a3db1d5b4778abb7dcb3637a4e0a86b10cba185/storage3-0.7.0-py3-none-any.whl.metadata
VERBOSE: Using cached storage3-0.7.0-py3-none-any.whl.metadata (1.9 kB)
VERBOSE: Collecting supafunc<0.4.0,>=0.3.1 (from supabase)
VERBOSE: Obtaining dependency information for supafunc<0.4.0,>=0.3.1 from https://files.pythonhosted.org/packages/e6/5f/efb275d649845e6fe3a65c08e8c1e424d56dbc14016b89dca83055ec656e/supafunc-0.3.3-py3-none-any.whl.metadata
VERBOSE: Using cached supafunc-0.3.3-py3-none-any.whl.metadata (1.2 kB)
VERBOSE: Collecting pydantic<3,>=1.10 (from gotrue<3.0,>=1.3->supabase)
VERBOSE: Obtaining dependency information for pydantic<3,>=1.10 from https://files.pythonhosted.org/packages/dd/b7/9aea7ee6c01fe3f3c03b8ca3c7797c866df5fecece9d6cb27caa138db2e2/pydantic-2.5.3-py3-none-any.whl.metadata
VERBOSE: Using cached pydantic-2.5.3-py3-none-any.whl.metadata (65 kB)
VERBOSE: Collecting certifi (from httpx<0.25.0,>=0.24.1->flet-runtime==0.19.0->flet-embed)
VERBOSE: Obtaining dependency information for certifi from https://files.pythonhosted.org/packages/64/62/428ef076be88fa93716b576e4a01f919d25968913e817077a386fcbe4f42/certifi-2023.11.17-py3-none-any.whl.metadata
VERBOSE: Using cached certifi-2023.11.17-py3-none-any.whl.metadata (2.2 kB)
VERBOSE: Collecting httpcore<0.18.0,>=0.15.0 (from httpx<0.25.0,>=0.24.1->flet-runtime==0.19.0->flet-embed)
VERBOSE: Obtaining dependency information for httpcore<0.18.0,>=0.15.0 from https://files.pythonhosted.org/packages/94/2c/2bde7ff8dd2064395555220cbf7cba79991172bf5315a07eb3ac7688d9f1/httpcore-0.17.3-py3-none-any.whl.metadata
VERBOSE: Using cached httpcore-0.17.3-py3-none-any.whl.metadata (18 kB)
VERBOSE: Collecting idna (from httpx<0.25.0,>=0.24.1->flet-runtime==0.19.0->flet-embed)
VERBOSE: Obtaining dependency information for idna from https://files.pythonhosted.org/packages/c2/e7/a82b05cf63a603df6e68d59ae6a68bf5064484a0718ea5033660af4b54a9/idna-3.6-py3-none-any.whl.metadata
VERBOSE: Using cached idna-3.6-py3-none-any.whl.metadata (9.9 kB)
VERBOSE: Collecting sniffio (from httpx<0.25.0,>=0.24.1->flet-runtime==0.19.0->flet-embed)
VERBOSE: Using cached sniffio-1.3.0-py3-none-any.whl (10 kB)
VERBOSE: Collecting deprecation<3.0.0,>=2.1.0 (from postgrest<0.16.0,>=0.10.8->supabase)
VERBOSE: Using cached deprecation-2.1.0-py2.py3-none-any.whl (11 kB)
VERBOSE: Collecting strenum<0.5.0,>=0.4.9 (from postgrest<0.16.0,>=0.10.8->supabase)
VERBOSE: Obtaining dependency information for strenum<0.5.0,>=0.4.9 from https://files.pythonhosted.org/packages/81/69/297302c5f5f59c862faa31e6cb9a4cd74721cd1e052b38e464c5b402df8b/StrEnum-0.4.15-py3-none-any.whl.metadata
VERBOSE: Using cached StrEnum-0.4.15-py3-none-any.whl.metadata (5.3 kB)
VERBOSE: Collecting python-dateutil<3.0.0,>=2.8.1 (from realtime<2.0.0,>=1.0.0->supabase)
VERBOSE: Using cached python_dateutil-2.8.2-py2.py3-none-any.whl (247 kB)
VERBOSE: Collecting typing-extensions<5.0.0,>=4.2.0 (from realtime<2.0.0,>=1.0.0->supabase)
VERBOSE: Obtaining dependency information for typing-extensions<5.0.0,>=4.2.0 from https://files.pythonhosted.org/packages/b7/f4/6a90020cd2d93349b442bfcb657d0dc91eee65491600b2cb1d388bc98e6b/typing_extensions-4.9.0-py3-none-any.whl.metadata
VERBOSE: Using cached typing_extensions-4.9.0-py3-none-any.whl.metadata (3.0 kB)
VERBOSE: Collecting websockets<12.0,>=11.0 (from realtime<2.0.0,>=1.0.0->supabase)
VERBOSE: Using cached websockets-11.0.3-py3-none-any.whl (118 kB)
VERBOSE: Collecting packaging (from deprecation<3.0.0,>=2.1.0->postgrest<0.16.0,>=0.10.8->supabase)
VERBOSE: Obtaining dependency information for packaging from https://files.pythonhosted.org/packages/ec/1a/610693ac4ee14fcdf2d9bf3c493370e4f2ef7ae2e19217d7a237ff42367d/packaging-23.2-py3-none-any.whl.metadata
VERBOSE: Using cached packaging-23.2-py3-none-any.whl.metadata (3.2 kB)
VERBOSE: Collecting h11<0.15,>=0.13 (from httpcore<0.18.0,>=0.15.0->httpx<0.25.0,>=0.24.1->flet-runtime==0.19.0->flet-embed)
VERBOSE: Using cached h11-0.14.0-py3-none-any.whl (58 kB)
VERBOSE: Collecting anyio<5.0,>=3.0 (from httpcore<0.18.0,>=0.15.0->httpx<0.25.0,>=0.24.1->flet-runtime==0.19.0->flet-embed)
VERBOSE: Obtaining dependency information for anyio<5.0,>=3.0 from https://files.pythonhosted.org/packages/bf/cd/d6d9bb1dadf73e7af02d18225cbd2c93f8552e13130484f1c8dcfece292b/anyio-4.2.0-py3-none-any.whl.metadata
VERBOSE: Using cached anyio-4.2.0-py3-none-any.whl.metadata (4.6 kB)
VERBOSE: Collecting annotated-types>=0.4.0 (from pydantic<3,>=1.10->gotrue<3.0,>=1.3->supabase)
VERBOSE: Obtaining dependency information for annotated-types>=0.4.0 from https://files.pythonhosted.org/packages/28/78/d31230046e58c207284c6b2c4e8d96e6d3cb4e52354721b944d3e1ee4aa5/annotated_types-0.6.0-py3-none-any.whl.metadata
VERBOSE: Using cached annotated_types-0.6.0-py3-none-any.whl.metadata (12 kB)
VERBOSE: Collecting pydantic-core==2.14.6 (from pydantic<3,>=1.10->gotrue<3.0,>=1.3->supabase)
VERBOSE: Using cached pydantic_core-2.14.6.tar.gz (360 kB)
VERBOSE: Installing build dependencies: started
VERBOSE: Installing build dependencies: finished with status 'error'

[FeodorFitsner]

and what command are you running?

[kacper-the-programmer]

flet build apk

[1mrnewton]

Having the same issue. I think it's related to the pydantic_core installation.

[kacper-the-programmer]

it for sure is related to pydantic_core but it should show error like "error with installing pydantic_core" not just freeze

[kacper-the-programmer]

I looked into pydantic_core code but I really don't know why it doesn't work

[FeodorFitsner]

Will take a look.

[FeodorFitsner]

Well, the issue guys is in pydantic-core library (you see it in the original log to this issue) which pydantic depends on. pydantic-core is "Core validation logic for pydantic written in rust", so it's a native library and has to be compiled for Android/iOS.

[1mrnewton]

Thanks for taking a look at it. Will there be a solution soon or any workaround?
There are lots of libraries using Pydantic, so automatically, we can't use them. I tried to use OpenAI (same issue)

[kacper-the-programmer]

now I'm just thinking about how to fix it, I just think I could try compiling rust to C but I have to find out how to do that

[FeodorFitsner]

We need recipe for p4a: https://github.com/kivy/python-for-android/tree/develop/pythonforandroid/recipes
...or compile pydantic-core to .so for Android manually.

[kacper-the-programmer]

I will take look into that

[kacper-the-programmer]

one question, do I have to add rust program to folder or just this:

from pythonforandroid.recipe import PythonRecipe

class PydanticcoreRecipe(PythonRecipe):
    version = '2.16.0'
    url = 'https://files.pythonhosted.org/packages/2f/ae/b230a03d5500bfce92d556b993dd6911ac0463b2468d345fb1b3b05eae79/pydantic_core-{version}.tar.gz'
    call_hostpython_via_targetpython = False
    install_in_hostpython = True


recipe = PydanticcoreRecipe()

will work ?