return {
  -- lang server management
  {
    "neovim/nvim-lspconfig",
    dependencies = {
      "williamboman/mason-lspconfig.nvim",
      {
        "mrcjkb/rustaceanvim",
        version = "^6",
        lazy = false,
      },
      {
        "hrsh7th/cmp-nvim-lsp",
        config = function()
          Capabilities = require("cmp_nvim_lsp").default_capabilities()
          Capabilities.textDocument.foldingRange = {
            dynamicRegistration = false,
            lineFoldingOnly = true,
          }
        end,
      },
    },
    config = function()
      require("mason-lspconfig").setup({
        automatic_setup = true,
        ensure_installed = {
          "bashls",
          "clangd",
          "dockerls",
          "gopls",
          "html",
          "jsonls",
          "lemminx",
          "ltex",
          "lua_ls",
          "marksman",
          "nimls",
          "pyright",
          "r_language_server",
          "sqlls",
          "texlab",
          -- "tsserver",
          "yamlls",
        },
      })

      local servers = {
        lua_ls = {
          lua = {
            diagnostics = {
              globals = { "vim" },
            },
            telemetry = { enable = false },
          },
        },
        ltex = {
          ltex = {
            -- language = "de-DE",
            enabled = { "latex" },
            dictionary = Dictionaries,
          },
        },
      }
      local default = {
        __index = function()
          return {}
        end,
      }
      setmetatable(servers, default)
      -- require("mason-lspconfig").setup_handlers({
      --   function(server_name)
      --     require('lspconfig')[server_name].setup({
      --       on_attach = Attach_func,
      --       capabilities = Capabilities,
      --       flags = {
      --         debounce_text_changes = 150
      --       },
      --       settings = servers[server_name]
      --     })
      --   end
      -- })
    end,
  },
}