I think the proper way would be:
- clone the repo
- follow the instructions here to check out the PR (#259).
- Uninstall the Expire1 binding.
- You will find an “Expire” folder under community. Copy the contents of that folder to your /etc/openhab2 folder (it’s already organized the same as your automation folder.
There is no additional configuration required. It will pick up your existing Expire binding configs as written, though there are a few new features/bug fixes that are possible now including the ability to set an Item to UNDEF explicitly, you can set a String Item to an empty String, and you can set a String to the String “UNDEF”.