python3Packages.manim: don't override av

Overriding Python packages isn't allowed within python3Packages.

pkgs/development/python-modules/manim/default.nix

@@ -183,16 +183,6 @@ let
       cbfonts-fd
     ]
   );
-  # https://github.com/ManimCommunity/manim/pull/4037
-  av_13_1 = av.overridePythonAttrs rec {
-    version = "13.1.0";
-    src = fetchFromGitHub {
-      owner = "PyAV-Org";
-      repo = "PyAV";
-      tag = "v${version}";
-      hash = "sha256-x2a9SC4uRplC6p0cD7fZcepFpRidbr6JJEEOaGSWl60=";
-    };
-  };
 in
 buildPythonPackage rec {
   pname = "manim";
@@ -216,7 +206,7 @@ buildPythonPackage rec {
   buildInputs = [ cairo ];
 
   dependencies = [
-    av_13_1
+    av
     beautifulsoup4
     click
     cloup
@@ -278,6 +268,8 @@ buildPythonPackage rec {
   pythonImportsCheck = [ "manim" ];
 
   meta = {
+    # https://github.com/ManimCommunity/manim/pull/4037
+    broken = lib.versionAtLeast av.version "14";
     description = "Animation engine for explanatory math videos - Community version";
     longDescription = ''
       Manim is an animation engine for explanatory math videos. It's used to