completion in kha based project stopped working

[sh-dave]

IRC log

9:43:13 AM - B: <Gama11> @ dave what kind of file paths are in completion requests with verbose mode enabled (https://github.com/vshaxe/vshaxe/wiki/Troubleshooting)?
9:43:43 AM - B: <Gama11> do they look like they exist?
9:49:36 AM - dave: yes, paths look ok. each one is listed twice though
9:55:07 AM - dave: hm, the --display argument might be wrong though. `--cwd` is set to `/xxx/build` and `--display` is `src/Main.hx` where it should be `../src/Main.hx` or `/xxx/src/Main.hx`?
9:58:21 AM - dave: (well --display is actually `src/Main.hx@0@diagnostics` in case the `@` matters)
10:05:11 AM - B: <Gama11> yes, I made some changes to cwd / handling of paths to fix a bunch of other issues..
10:05:43 AM - B: <Gama11> ironically `--cwd` is one of the things that was buggy.. 😃
10:07:11 AM - B: <Gama11> that's a bit awkward, maybe the language server needs to look for `--cwd` to find the correct relative paths of display files... :/
10:08:03 AM - B: <Gama11> this is one of the issues that was fixed https://github.com/vshaxe/vshaxe/issues/248
10:17:50 AM - B: <Gama11> I'm actually not sure there's a good fix for this in the general case, so maybe I'll end up having to revert the changes entirely 😦