nvim/after/plugin/lsp.lua

local lsp = require("lsp-zero")

local cmp = require('cmp')
local cmp_select = {behavior = cmp.SelectBehavior.Select}
local cmp_mappings = lsp.defaults.cmp_mappings({
	['<C-k>'] = cmp.mapping.select_prev_item(cmp_select),
	['<C-j>'] = cmp.mapping.select_next_item(cmp_select),
	['<C-y>'] = cmp.mapping.confirm({select = true}),
	['<C-Space>'] = cmp.mapping.complete(),
})

cmp.setup({
	sources = {
		{name = 'path'},
		{name = 'nvim_lsp'},
		{name = 'nvim_lua'},
	},
	formatting = lsp.cmp_format(),
	mapping = cmp.mapping.preset.insert(cmp_mappings)
})

lsp.on_attach(function(client, bufnr)
	local opts = {buffer = bufnr, remap = false}
	
	vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
	vim.keymap.set("n", "K", function() vim.lsp.buf.hover() end, opts)
	vim.keymap.set("n", "<leader>vws", function() vim.lsp.buf.workspace_symbol() end, opts)
	vim.keymap.set("n", "<leader>vd", function() vim.diagnostic.open_float() end, opts)
	vim.keymap.set("n", "]d", function() vim.diagnostic.goto_next() end, opts)
	vim.keymap.set("n", "[d", function() vim.diagnostic.goto_prev() end, opts)
	vim.keymap.set("n", "<leader>vca", function() vim.lsp.buf.code_action() end, opts)
	vim.keymap.set("n", "<leader>vrr", function() vim.lsp.buf.references() end, opts)
	vim.keymap.set("n", "<leader>vrn", function() vim.lsp.buf.rename() end, opts)
	vim.keymap.set("i", "<C-h>", function() vim.lsp.buf.signature_help() end, opts)

end)

require'lspconfig'.gdscript.setup{}


require('mason').setup({})
require('mason-lspconfig').setup({
	ensure_installed = {'rust_analyzer', 'gopls'},
	handlers = {
		lsp.default_setup,
		lua_ls = function()
			local lua_opts = lsp.nvim_lua_ls()
			require('lspconfig').lua_ls.setup(lua_opts)
		end,
	}
})