mason-lspconfig.nvim VS lsp-zero.nvim

https://github.com/hrsh7th/nvim-cmp This is an autocompletion engine https://github.com/nvim-treesitter/nvim-treesitter This allows NeoVim to install parsing scripts so NeoVim can do things like code highlighting. https://github.com/williamboman/mason.nvim Not strictly necessary, but allows you to access a repo of LSP, install them, and configure them for without you actively messing about in config files. https://github.com/neovim/nvim-lspconfig Also not strictly necessary, but vastly simplifies LSP setup. https://github.com/williamboman/mason-lspconfig.nvim This lets the above two plugins talk to each other more easily.

pylsp offers an option to install flake8 as an optional plugin and Mason offers a command to install pylsp plugins. I could then install flake8-pytest-style via pip. Then pylsp and flake8 would live in the same Mason environment and flake8-pytest-style would live in my project's environment. I don't know if/how they will communicate with each other.

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.

Have you set up https://github.com/williamboman/mason-lspconfig.nvim as well?

You can also use https://github.com/williamboman/mason-lspconfig.nvim with nvim-lspconfig to make language server installation closer to installing a vscode extension, in that you just install a language server through mason and it'll be automatically configured for you.

https://github.com/williamboman/mason-lspconfig.nvim - Mason plugin to manage your LSP servers.

I found this GitHub issue: https://github.com/williamboman/mason-lspconfig.nvim/issues/224 I think it could be related, but I'm not sure.

LSP: lspconfig & mason-lspconfig.nvim"

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.