how to make python portable

https://chat.mistral.ai/chat/ab946d87-22e6-47d4-a99c-e8522c077347

```
wget https://www.python.org/ftp/python/3.13.7/Python-3.13.7.tgz
tar -xzf Python-3.13.7.tgz
rm Python-3.13.7.tgz
cd Python-3.13.7
./configure --enable-optimizations --with-ensurepip=install --prefix=$(pwd)/portable_python
make -j$(nproc)
make install
# now in portable_python install packages that are needed
./portable_python/bin/pip3 install bcrypt
./portable_python/bin/pip3 install radicale
cd ..
mv Python-3.13.7/portable_python portable_python
rm -rf Python-3.13.7 
cd ..
tar -czvf caldav.tar.gz caldav/
```


tar -xzf caldav.tar.gz