使用 pyinstaller 在 10.14 環境下打包的程式，在 10.10 上會顯示錯誤：
In Mac OS X, components from one version of the OS are usually compatible with later versions, but they may not work with earlier versions.
The only way to be certain your app supports an older version of Mac OS X is to run PyInstaller in the oldest version of the OS you need to support.
For example, to be sure of compatibility with “Snow Leopard” (10.6) and later versions, you should execute PyInstaller in that environment. You would create a copy of Mac OS X 10.6, typically in a virtual machine. In it, install the desired level of Python (the default Python in Snow Leopard was 2.6, which PyInstaller no longer supports), and install PyInstaller, your source, and all its dependencies. Then build your app in that environment. It should be compatible with later versions of Mac OS X.
How to create simple Mac apps from shell scripts