Creating executable for 3 different OS

The app needs to read/write from serial. Build in macOS Catalina. Error due to version sucks.

Electron

• Was able to read serial using nodejs serialport
• Versioning error when trying to read the serial from electron
• Fix the version to the older ones from here:

    "electron": "5.0.11",
    "electron-rebuild": "1.8.6"
    "serialport": "^7.1.5"
  

• How to read and write to serial from the html

PyInstaller

• pyserial is supported by PyInstaller
• Tried with the python3 default from Catalina, does not work OSError: Python library not found: libpython3.7.dylib, libpython3.7m.dylib, Python, .Python
• While searching, found that people uses pyenv to get the library, so

    # Install pyenv
    brew update
    brew install pyenv
  
    # Set up pyenv in bash
    git clone https://github.com/pyenv/pyenv.git ~/.pyenv
    echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bash_profile
    echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile
    echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n  eval "$(pyenv init -)"\nfi' >> ~/.bash_profile
  
    # Install python
    env PYTHON_CONFIGURE_OPTS="--enable-shared" pyenv install 3.7.3
    which python        # will return ~/.pyenv/shims/python not the default python anymore
    pyenv versions      # will list out different python installed in the system
    pyenv global 3.7.3  # uses python version 3.7.3
  
    # Install packages
    pip -V              # check if it comes from pyenv
    pip install pyinstaller pyserial
  

• Make the executable by python -m PyInstaller test.py, running pyinstaller directly didn’t work. This will create a folder with a bunch of libraries inside. The first launch is slow, but consequent launch is fast.
• To generate one executable, python -m PyInstaller -c --clean --onefile test.py. However, the launch is slow…