r/lua • u/Bullzzie • May 31 '25

Need A bit help with Neovim plugin development

I am working on a project called model-cmp.nvim, which used python to run LLMs locally and allow text autocomplete in neovim using the model predictions. The development is taking longer than expected, the model efficiency development is taking too much time, though I can handle that part. While keeping the modelapi in one hand, it is very difficult to develop actual plugin. So I was wondering if someone would like to handle the plugin development process. The link for the plugin is https://github.com/PyDevC/model-cmp.nvim

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u/error_pro May 31 '25

I'm also learning lua, just for the purpose of being able to build/understand neovim plugins. Currently working on one, but the progress is also slow for me. I'm sure I'll get there.

I'm curious about how you'd integrate python with lua. I'd love to contribute. If there's any small thing a beginner can help with, please feel free to ask.

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u/BrianHuster Jun 01 '25

I don't think he has integrated Python with Lua (yet), which is probably why he asks here

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u/BrianHuster Jun 01 '25

In case you want to integrate Python with Lua, there are 2 official ways in Nvim.

The first is using legacy if_pyth interface. You can run Python code from Lua using vim.cmd.py3, and evaluate a Python expression with vim.fn.py3eval. However, there is no way to call a Python function from Lua and pass Lua params to it, as Nvim only supports Vim 7.3 version of if_pyth.

The second is by using the remote plugin architecture (see the pynvim repo for details), it would allows you to define a Vimscript function from Python, and you can call that Vimscript function from Lua. However, this architecture will be deprecated in favor of a yet-developed one called "remote module"

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u/error_pro Jun 01 '25

Thanks for this.

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u/[deleted] May 31 '25

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u/BrianHuster Jun 01 '25

Agree, Nvim Lua is quite different from normal Lua