neovim-config/lua/plugins/configs/lspconfig.lua

require("plugins.configs.others").lsp_handlers()

local function on_attach(_, bufnr)
   local function buf_set_option(...)
      vim.api.nvim_buf_set_option(bufnr, ...)
   end

   -- Enable completion triggered by <c-x><c-o>
   buf_set_option("omnifunc", "v:lua.vim.lsp.omnifunc")

   require("core.mappings").lspconfig()
end

local capabilities = vim.lsp.protocol.make_client_capabilities()

-- requires a file containing user's lspconfigs
local addlsp_confs = require("core.utils").load_config().plugins.options.lspconfig.setup_lspconf

if #addlsp_confs ~= 0 then
   require(addlsp_confs).setup_lsp(on_attach, capabilities)
end