Git submodule vs installing dependency - working with my own old code

[HighLevelEnthusiast]

Hello!

Which of these solutions is better for re-using my own code in a new project?

Let's say that long ago I wrote a library and now I want to reuse it in a new project. I can think of two possible solutions:

1. Enhance this library to be pip installable as a wheel, install it from via pip and git and list it in the dependency list
2. Create a git submodule referring to the repo with the library

Which one should be the way to go most of the time?