return {
  {
    "neovim/nvim-lspconfig",
    opts = {
      servers = {
        -- Lua
        lua_ls = {},
        -- Nix
        nil_ls = {},
        -- Typescript
        vtsls = {},
        -- Haskell
        hls = {},
      },
      codelens = {
        enable = true,
      },
    },
  },
}