remove pydantic

[AviAvni]

Fix #55

[InternetOfTofu]

This PR won't work, the entire section related to LogLine needs to change when pydantic is removed:

        debug_log_line = LogLine(
            time=str(datetime.now().strftime("%Y-%m-%d %H:%M:%S")),
            level=logging.getLevelName(level),
            caller_file=caller_file,
            caller_name=caller_name,
            caller_line=caller_line,
            message=debug_message,
        )
        self.logger.log(
            level=level,
            msg=debug_log_line.json(),
        )

Without BaseModel, the class will not have a constructor. So the construction line will need to change to something like:

debug_log_line = LogLine()
debug_log_line.time  = ...
debug_log_line.level = ...
debug_log_line.caller_file = caller_file
...

This manually set all the attributes.

The .json() method from debug_log_line.json() is also from BaseModel class. This will need to change to json.dumps(vars(debug_log_line)). This will create an equivalent json to what would have been produced with BaseModel.json() method.

After this 2 changes this PR will work.

(sorry I can't submit a PR myself due to the complicated approval that I'll then need to go through 😢)

[AviAvni]

@sbrudz thanks for the review is this ready now?

[sbrudz]

@sbrudz thanks for the review is this ready now?

@AviAvni The fix you made looks good to me. I'm not a maintainer, though, so @LakshyAAAgrawal will need to answer your question.

[LakshyAAAgrawal]

@AviAvni Thank you so much for your PR!

Can you please have a look at the failed tests (https://github.com/microsoft/multilspy/actions/runs/13097207670/job/37418751364?pr=58)? Basically, "typing_extensions", which is a dependency of pydantic is still being used many places elsewhere in the repository. So we should try adding it back.

@gkorland, @wapiflapi, @camsteffen, @InternetOfTofu, @sbrudz - Thank you so much for your valuable feedback and comments!

[LakshyAAAgrawal]

Can you kindly undo the "<4.0" change?

[AviAvni]

as I wrote if I do it poetry lock command failed with
For jedi-language-server, a possible solution would be to set the python property to ">=3.8,<4.0"

[LakshyAAAgrawal]

@AviAvni, I am very sorry for being so picky on this, but I want to ensure multilspy can be runnable in as many configurations and environments as possible (which is why we are removing pydantic in the first place), so I apologize for being picky, and request you to make the changes as I requested above if you think they are right!

[sternj]

I also want to note that, at the moment, there's nothing except the .json() method that's distinct to Pydantic v1-- the deprecation warning indicates that it won't be removed until v3.0, so you could just expand the version range to make it work easier.

[LakshyAAAgrawal]

Dear @sternj, Thank you very much for bringing this to notice. Overall I think since we are already able to contain the usage of pydantic, it may be better to do away with a dependency?

[sternj]

@LakshyAAAgrawal Given that it's approved now that definitely makes more sense! I was just suggesting a quick and dirty fix to satiate our dependency resolvers while the maintainers put in place a real solution! There is one now, which is far better than my idea.

[LakshyAAAgrawal]

Thank you so much @AviAvni for the contribution, and to everyone for their comments and feedback!