diff --git a/pkgs/development/python-modules/xcffib/default.nix b/pkgs/development/python-modules/xcffib/default.nix
index a248a55453c1..b4def14ff47c 100644
--- a/pkgs/development/python-modules/xcffib/default.nix
+++ b/pkgs/development/python-modules/xcffib/default.nix
@@ -1,9 +1,9 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, fetchpatch
 , xorg
 , cffi
-, six
 , pytestCheckHook
 }:
 
@@ -16,12 +16,20 @@ buildPythonPackage rec {
     hash = "sha256-8yMCFEf55zB40hu5KMSPTavq6z87N+gDxta5hzXoFIM=";
   };
 
-  patchPhase = ''
+  patches = [
+    (fetchpatch {
+      name = "remove-leftover-six-import.patch";
+      url = "https://github.com/tych0/xcffib/commit/8a488867d30464913706376ca3a9f4c98ca6c5cf.patch";
+      hash = "sha256-wEms0gC7tVqtmKMjjpH/34kdQ6HUV0h67bUGbgijlqw=";
+    })
+  ];
+
+  postPatch = ''
     # Hardcode cairo library path
     sed -e 's,ffi\.dlopen(,&"${xorg.libxcb.out}/lib/" + ,' -i xcffib/__init__.py
   '';
 
-  propagatedBuildInputs = [ cffi six ];
+  propagatedBuildInputs = [ cffi ];
 
   propagatedNativeBuildInputs = [ cffi ];
 
@@ -31,6 +39,11 @@ buildPythonPackage rec {
     xorg.xorgserver
   ];
 
+  preCheck = ''
+    # import from $out
+    rm -r xcffib
+  '';
+
   pythonImportsCheck = [ "xcffib" ];
 
   meta = with lib; {