luajit2 VS pynvim

And Neovim is using OpenResty's branch of Luajit

Yea, LuaJIT can get near C speeds, as far as I'm aware. You can read more here: https://luajit.org/luajit.html

I also found this gtihub repo, this one is using luaJIT a just in time lua compiler, i dont know if you have any python expirience but this one, but from what i understand luaJIT makes lua a language that can be compiled and run in your terminal, it aperently also has a comminty made package/library manager called cherry.

openresty's LuaJIT2 has, and makes, regular releases (the last one was less than a month ago), and closely tracks development, including the extensions beyond Lua 5.1.

There is also the openresty fork of luajit which Neovim can be built with and provides their own releases.

luajit.org said

Remember, bad C++ code will certainly be slower than good code written in an interpreted language! That being said, Lua is very fast, one of the fastest scripting languages. See this thread, which talks about LuaJit.

https://github.com/openresty/luajit2

It has a few extras but they agree with the original luajit authors opinion that not every 5.2 feature can be made in jit.

In a python remote plugin using pynvim, you could write something like this.

I can't fully recommend one example posted in #520 (because it has some practices that are not quite recommendable IMHO) but you may want to take a look at it.

To my knowledge no, but looks this is a common problem on Windows. Please file an issue on https://github.com/neovim/pynvim/ (a reproduction step would be greatly appreciated) so we can track it.

That should be it https://github.com/neovim/pynvim

You managed to pick two languages I don't use, but I believe it would more than meet your criteria. Neovim has excellent LSP support, and there are several for C/C++/CMake and for Python. See the list here. There's intellisense like completion via coc. For debugging there's also nvim-dap. With something like pynvim you could even write plugins for neovim itself in python. (I've written some in lua myself because of its native lua interface, which is a nice alternative to vimscript.)

pynvim doc is not very good IMO I will gladly use nvim --remote now that the feature is available if I ever need something from python!

As a sidenote, I didn't see another option besides making it as a python remote plugin, since I really needed to use Python's jupyterclient library (basically the Jupyter protocol is pretty complicated, and jupyter-client is its official implementation). And that sucks, because pynvim is badly documented and has a few really weird bugs (e.g. https://github.com/neovim/pynvim/issues/386), which I then had to work around.

Maybe this or this

I'm trying to use pynvim to write tests for a plugin (since I'm a big fan of pytest). However I cannot seem to configure the nvim session through a lua file. I've created an issue but thought I would also post here to see if someone knows what's going on since I haven't had a reply in a few days.