diff --git a/pkgs/development/python-modules/tilequant/default.nix b/pkgs/development/python-modules/tilequant/default.nix
index 90caab8ebef8..a72802e2c7b3 100644
--- a/pkgs/development/python-modules/tilequant/default.nix
+++ b/pkgs/development/python-modules/tilequant/default.nix
@@ -1,4 +1,13 @@
-{ lib, buildPythonPackage, fetchFromGitHub, GitPython, click, ordered-set, pillow, sortedcollections }:
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, gitpython
+, click
+, ordered-set
+, pythonOlder
+, pillow
+, sortedcollections
+}:
 
 let
   aikku93-tilequant = fetchFromGitHub {
@@ -11,6 +20,9 @@ in
 buildPythonPackage rec {
   pname = "tilequant";
   version = "0.4.0.post0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "SkyTemple";
@@ -23,15 +35,26 @@ buildPythonPackage rec {
     cp -R --no-preserve=mode ${aikku93-tilequant} __aikku93_tilequant
   '';
 
-  buildInputs = [ GitPython ];
-  propagatedBuildInputs = [ click ordered-set pillow sortedcollections ];
+  buildInputs = [
+    gitpython
+  ];
+
+  propagatedBuildInputs = [
+    click
+    ordered-set
+    pillow
+    sortedcollections
+  ];
 
   doCheck = false; # there are no tests
-  pythonImportsCheck = [ "skytemple_tilequant" ];
+
+  pythonImportsCheck = [
+    "skytemple_tilequant"
+  ];
 
   meta = with lib; {
-    homepage = "https://github.com/SkyTemple/tilequant";
     description = "Tool for quantizing image colors using tile-based palette restrictions";
+    homepage = "https://github.com/SkyTemple/tilequant";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ xfix ];
   };