formatter.nvim VS python-lsp-server

Can anyone explain why someone would use null-ls if you're using the modern lsp setup (say, from kickstart.nvim). I see comments mentioning formatting. I see formatters mentioned several times. Why not just use https://github.com/mhartington/formatter.nvim?

I use null-ls (https://github.com/jose-elias-alvarez/null-ls.nvim), I haven't tried it for python, but haven't had trouble with lua, js, ts or rust. You can also look into formatter.nvim (https://github.com/mhartington/formatter.nvim).

I use formatter.nvim for formatting

For formatting, formatter.nvim is a good choice and has similar setup to nvim-lint.

I finally installed this formatter plugin and configured it to execute de clang-format command like this

mhartington/formatter.nvim is used for automatic code formatting. Its configuration also shows how to use nvim_create_augroup and nvim_create_autocmd from Lua.

This might have something to do with extmarks being clobbered when the new text is written. For example, here is a GitHub issue describing the problem: https://github.com/mhartington/formatter.nvim/issues/22 This is for formatter.nvim, but this would likely apply to any process that rewrites the whole buffer.

i have always had trouble with lsp formatting and null-ls (may just be me, i'm not super clued in) so i use formatter.nvim https://github.com/mhartington/formatter.nvim/

Take a look at formatter.nvim

I've had really good experience with formatter-nvim.

Python LSP Server works great, is easier to install and even offers some optional extensions.

https://github.com/python-lsp/python-lsp-server

I suggest looking for blog posts about this, you're gunnuh wanna pick out a plugin manager and stuff. It's kind of like a package manager for neovim. You can install everything manually but usually you manually install a plugin manager and it gives you commands to manage the rest of your plugins.

These two plugins are the bare minimum in my view.

https://github.com/nvim-treesitter/nvim-treesitter

Treesitter gives you much better syntax highlighting based on a parser for a given language.

https://github.com/neovim/nvim-lspconfig

This plugin helps you connect to a given language LSP quickly with sensible defaults. You more or less pick your language from here and copy paste a snippet, and then install the relevant LSP:

https://github.com/neovim/nvim-lspconfig/blob/master/doc/ser...

For Python you'll want pylsp. For JavaScript it will depend on what frontend framework you're using, I probably can't help you there.

pylsp itself takes some plugins and you'll probably want them. https://github.com/python-lsp/python-lsp-server

Best of luck! Happy hacking.

I came at the tail end of https://github.com/python-lsp/python-lsp-server/issues/195. The possibility of me sponsoring a fix came up, and I’m on board with it, but the other contributor never replied.

I haven't used pylint, but I find mypy with python-lsp-server extremely easy to use with nvim-lspconfig, especially on Arch linux.

Whatever you use, make sure you have syntax highlighting, completion and error checking! I'm using pylsp and shellcheck in emacs, but those or similar options should work in any IDE, replacing much of what made IDEs unique in former times.

Perhaps unrelated, from my experience, pylsp is better than pyright, see https://github.com/python-lsp/python-lsp-server/.

I am finally starting to use lsp for python development. I am using pylsp as LS.

I'm talking about this python LSP server (the command is pylsp that's why).

Another example, you can setup python-lsp-server with nvim-lspconfig (lsp server also needs to be installed globally or in virtualenv) and they have a plugin for black which you can then install in the same virtualenv and just use lsp to format the code instead of formatter.nvim.

Do you use any lsp (like pylsp or pyright)? If yes, did you setup it to use proper python / did you activate venv?