Neovim/lua/plugins/lsp.lua

return {
    {
        "neovim/nvim-lspconfig",
        dependencies = {
            "williamboman/mason.nvim",
            "williamboman/mason-lspconfig.nvim",
        },
        opts = {
            diagnostics = {
                underline = true,
                update_in_insert = true,
                virtual_text = {
                    spacing = 4,
                    source = "if_many",
                    prefix = "●",
                },
                severity_sort = true,
                signs = {
                    text = {
                        [vim.diagnostic.severity.ERROR] = require("options").lsp.icons.Error,
                        [vim.diagnostic.severity.WARN] = require("options").lsp.icons.Warn,
                        [vim.diagnostic.severity.HINT] = require("options").lsp.icons.Hint,
                        [vim.diagnostic.severity.INFO] = require("options").lsp.icons.Info,
                    },
                },
            },
        },
        config = function(_, opts)
            local options = require("options")

            require("mason").setup()

            local handlers = {
                -- The first entry (without a key) will be the default handler
                -- and will be called for each installed server that doesn't have
                -- a dedicated handler.
                function(server_name) -- default handler (optional)
                    require("lspconfig")[server_name].setup({
                        on_attach = function(client, bufnr)
                            if client.server_capabilities["documentSymbolProvider"] then
                                require("nvim-navic").attach(client, bufnr)
                            end
                        end,
                    })
                end,
            }

            require("mason-lspconfig").setup({ handlers = handlers })

            -- set custom icons
            for name, icon in pairs(options.lsp.icons) do
                name = "DiagnosticSign" .. name
                vim.fn.sign_define(name, { text = icon, texthl = name, numhl = "" })
            end

            vim.diagnostic.config(vim.deepcopy(opts.diagnostics))

            require("lspconfig").gdscript.setup({})
        end,
    },
}