nvim-lspinstall VS vim-plug

A word of caution, I believe lspinstall has been deprecated in favor of nvim-lspinstall which itself has also been deprecated in favor of mason-lspconfig

kabouzeid/nvim-lspinstall will aide in installing lsp's if you want. I have chosen not to because I want to have my full setup scripted so when I setup any new machine I just run my ansible-playbook. This library is nice to just set things up quick and play with them.

nvim-lspinstall

I'm trying to edit a lua file, and got this error which I realize is because I didn't have the Lua language server installed. So using the LspInstall plugin, I did :LspInstall lua which was successful.

Once you have it installed, you can configure it following the configuration of this file: https://github.com/kabouzeid/nvim-lspinstall/wiki. The part that ia bellow the comment "-- lsp-install" works and it was what I used initially when I didn't really know much about configuring neovim.

I am using lspinstall to install language server. It uses this json-language-server. As the docs says jsonc is supported and it allows comments in jsonc filetypes but the lsp is not showing diagnostic if I make any other syntax error. On line 34 i have removed a comma and still lsp showing no diagnostic error in jsonc file.

You could try to use the instructions that nvim-lspinstall uses to install the tailwindcss language server: https://github.com/kabouzeid/nvim-lspinstall/blob/main/lua/lspinstall/servers/tailwindcss.lua (lines 4 - 12)

vim-plug

Did you really install VimTeX? Did you run :PlugInstall? Ensure you installed and set up vim-plug correctly (https://github.com/junegunn/vim-plug). If VimTeX is installed, it should be installed to '~/.vim/plugged', thus you can open a terminal, then cd ~/.vim/plugged/vimtex and you should find the files there.

If you're determined to use vim for some reason, I'd suggest checking out vim-plug: https://github.com/junegunn/vim-plug. Quite useful for installing and maintaining all of the plugins that you're going to need to get vim to provide even a subset of the features offered by modern editors.

I encourage you to add plugins to your vim (tip: use vim-plug). Use vimawesome.com for inspiration.

Personally, I like https://github.com/junegunn/vim-plug

But the plugin manager https://github.com/junegunn/vim-plug can also install from offline sources, without accessing Github:

To get started, simply install the plugin using your favorite plugin manager, such as vim-plug or packer.nvim. You can find detailed installation instructions in the README.

Not sure if Vundle did anything particularly fancy, but I'm using vim-plug [0] and have no complaints. It stays out of my way to the point that I had to look at my .vimrc just now to make sure that's what I was using.

[0] https://github.com/junegunn/vim-plug

I chose to move on to vim-plug and can report it was a simple switch from Vundle.