nvim-config-local VS lsp-zero.nvim

it's been undeprecated recently, but if you would prefer to use a plugin, I use this one

The next version of neovim (and currently, nightly) re-enables support for exec, which sounds close to what you want. In the meantime check out https://github.com/klen/nvim-config-local. These both do a single file, but once you're running some code it's easy enough to get that file to source more.

I just use nvim-config-local, which is basically just souped up :h 'exrc'. And then from there I typically set makeprg and a custom "run" command if I want, along with any other settings I might want in the project. I tried using some custom runner type plugins in the past but I think this method has provided me with the most flexibility, and I don't have to learn anything new because it's just the same as what i do in my init.lua.

I took inspiration from nvim-config-local and added an integrity check, to force the user to review the settings file at least once. It's on by default, but is optional. The file can be safe to use if you don't expose any option that allows for arbitrary code execution.

nvim-config-local

I'm using lsp-zero and i followed this tutorial https://github.com/VonHeikemen/lsp-zero.nvim/blob/v2.x/doc/md/guides/setup-with-nvim-jdtls.md and i have essentially just copy pasted the code from there into ~/.config/nvim/lua/plugin/jdtls.lua

Personally, i think nvim-lint is the best alternative currently, specially so because it has no dependencies on external binaries. This guide assumes you already have your LSP set up with nvim-lspconfig (or an alternative like lsp-zero). You should also have an way to install the linters you are gonna need, i highly recommend Mason with mason-lspconfig.

For those new to neovim, the documentation in lsp-zero has a tutorial that shows a configuration from scratch. It shows how to get a plugin a manager, a colorscheme, and setup lsp-zero.

Try https://github.com/VonHeikemen/lsp-zero.nvim, a great introduction and it is pretty usable without any further config

For neovim, you can still use the same extensions; however there's also a built-in LSP client. The downside of using the built-in is you'll need to have more extensions installed/configured to get all the features out of the box...BUT projects do exist to help simplify that, like lsp-zero.

lap-zero.nvim - default config for nvim-lspconfig, mason.nvim, nvim-cmp.

In version v2.x the keybindings you set on the "global" on_attach of lsp-zero should work without any extra config. v2.x also has a tutorial on how to work with nvim-jdtls: setup with nvim-jdtls

Creator of lsp-zero suggested a complete solution to use ray-x/lsp_signature in this issue: https://github.com/VonHeikemen/lsp-zero.nvim/issues/69.