diff --git a/pkgs/development/python-modules/nsz/default.nix b/pkgs/development/python-modules/nsz/default.nix
index 3056f0dc4b38..e9d6edbfa80a 100644
--- a/pkgs/development/python-modules/nsz/default.nix
+++ b/pkgs/development/python-modules/nsz/default.nix
@@ -1,4 +1,10 @@
-{ lib, buildPythonPackage, fetchFromGitHub, pycryptodome, enlighten, zstandard
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pycryptodome
+, pythonOlder
+, enlighten
+, zstandard
 , withGUI ? true
 , kivy
 }:
@@ -6,6 +12,9 @@
 buildPythonPackage rec {
   pname = "nsz";
   version = "4.4.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "nicoboss";
@@ -14,8 +23,11 @@ buildPythonPackage rec {
     hash = "sha256-glK4CK7D33FfLqHLxVr4kkb887/A9tqxPwWpcXYZu/0=";
   };
 
-  propagatedBuildInputs = [pycryptodome enlighten zstandard ]
-    ++ lib.optional withGUI kivy;
+  propagatedBuildInputs = [
+    pycryptodome
+    enlighten
+    zstandard
+  ] ++ lib.optional withGUI kivy;
 
   # do not check, as nsz requires producation keys
   # dumped from a Nintendo Switch.
@@ -23,7 +35,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     homepage = "https://github.com/nicoboss/nsz";
-    description = "NSZ - Homebrew compatible NSP/XCI compressor/decompressor";
+    description = "Homebrew compatible NSP/XCI compressor/decompressor";
     changelog = "https://github.com/nicoboss/nsz/releases/tag/${version}";
     license = licenses.mit;
     maintainers = with maintainers; [ eyjhb ];