1 files changed, 2 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/python-language-server/default.nix b/nixpkgs/pkgs/development/python-modules/python-language-server/default.nix
index 09ded676b74f..54c5418ae677 100644
--- a/nixpkgs/pkgs/development/python-modules/python-language-server/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/python-language-server/default.nix
@@ -1,5 +1,5 @@
 { stdenv, buildPythonPackage, fetchFromGitHub, pythonOlder, isPy27
-, configparser, futures, future, jedi, pluggy, python-jsonrpc-server
+, backports_functools_lru_cache, configparser, futures, future, jedi, pluggy, python-jsonrpc-server
 , pytest, mock, pytestcov, coverage
 , # Allow building a limited set of providers, e.g. ["pycodestyle"].
   providers ? ["*"]
@@ -54,7 +54,7 @@ buildPythonPackage rec {
     ++ stdenv.lib.optional (withProvider "rope") rope
     ++ stdenv.lib.optional (withProvider "yapf") yapf
     ++ stdenv.lib.optional isPy27 configparser
-    ++ stdenv.lib.optional (pythonOlder "3.2") futures;
+    ++ stdenv.lib.optionals (pythonOlder "3.2") [ backports_functools_lru_cache futures ];
 
   meta = with stdenv.lib; {
     homepage = https://github.com/palantir/python-language-server;