Version Defines in Assembly Definition inside a Package not working

I have a package which depends on textmeshpro. I need a symbol defined for older versions of textmeshpro to make my package work with those old versions since textmeshpro's structure and classes have changed.

In my assembly definition I put a version define with my symbol name and the textmeshpro version I'm interested in.

This works if my scripts are under my Assets folder e.g. when I am developing the package. Once I import the package from UPM in a new project, the symbol is not defined and the package compiles as if the version define did not exist.

Is this the expected behavior? Is the "version defines" feature of assembly definitions only for project assembly definitions? The documentation is not clear on this.

 

Having the same problem from a package. Did you ever solve it?

 

I think this resolved as I updated my Unity Editor. I know it works now.