From 90d161ef253b3eb9ae37801828f6e3cdff8c03a9 Mon Sep 17 00:00:00 2001
From: "Robert T. McGibbon" <rmcgibbo@gmail.com>
Date: Tue, 23 Mar 2021 11:07:05 -0400
Subject: [PATCH] python3Packages.sphinx-navtree: mark as broken

---
 pkgs/development/python-modules/sphinx-navtree/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/python-modules/sphinx-navtree/default.nix b/pkgs/development/python-modules/sphinx-navtree/default.nix
index 02e5711e888f..ae56a9fdce11 100644
--- a/pkgs/development/python-modules/sphinx-navtree/default.nix
+++ b/pkgs/development/python-modules/sphinx-navtree/default.nix
@@ -14,5 +14,7 @@ buildPythonPackage rec {
     description = "Navigation tree customization for Sphinx";
     homepage = "https://github.com/bintoro/sphinx-navtree";
     license = lib.licenses.mit;
+    # not compatible with sphinx 3.3, not updated since 2016
+    broken = true;
   };
 }