Breaks Pillow webp support

Installed Nuitka via pip3, Pillow via apt from debian repos.

$ nuitka3 --version
0.8.4
Commercial: None
Python: 3.10.5 (main, Jun  8 2022, 09:26:22) [GCC 11.3.0]
Flavor: Debian Python
Executable: /usr/bin/python3
OS: Linux
Arch: x86_64
Distribution: Debian sid

Pillow v9.1.1. My wish is to make Pillow code faster and produce single python-independent binary. AppImage is ok for me. Consider following example:

#!/usr/bin/env python3

from PIL import Image

def main():
    Image.open("in.jpg").save("out.webp")

if __name__ == "__main__":
    main()

Compiling with nuitka and executing:

$ CCFLAGS='-march=native' nuitka3 --quiet --onefile --follow-stdlib --follow-imports --remove-output --enable-plugin=numpy --enable-plugin=pyqt5 -j3 webp.py

produces binary webp.bin

$ ./webp.bin
Traceback (most recent call last):
  File "/tmp/.mount_webp.bzy6UMM/webp.py", line 10, in <module>
    main()
  File "/tmp/.mount_webp.bzy6UMM/webp.py", line 7, in main
    Image.open("in.jpg").save("out.webp")
  File "/tmp/.mount_webp.bzy6UMM/PIL/Image.py", line 2280, in save
ValueError: unknown file extension: .webp

So no WebP support, unfortunate. Replacing out.webp with e.g. out.png leads to working program, but I need WebP for my specific purpose. UPD0: Simplified command: $ nuitka3 --onefile --full-compat --remove-output --enable-plugin=numpy --enable-plugin=pyqt5 webp.py doesn’t work either.

[kayhayen]

Part of the of current pre-release, and will be part of 0.9 release.

[kayhayen]

Part of the 0.9 release that I just made.