From b6d9b11bf0ca422eb699ed85a74936f0654eae25 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Fri, 10 Mar 2023 10:08:40 +0100
Subject: [PATCH] python3.pkgs.tensorflow: fix evaluation when generating nix
 dependency graph

---
 pkgs/development/python-modules/tensorflow/bin.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/tensorflow/bin.nix b/pkgs/development/python-modules/tensorflow/bin.nix
index dcfa8e0e964c..c9ed92712166 100644
--- a/pkgs/development/python-modules/tensorflow/bin.nix
+++ b/pkgs/development/python-modules/tensorflow/bin.nix
@@ -57,7 +57,7 @@ in buildPythonPackage {
     platform = if stdenv.isDarwin then "mac" else "linux";
     unit = if cudaSupport then "gpu" else "cpu";
     key = "${platform}_py_${pyVerNoDot}_${unit}";
-  in fetchurl packages.${key};
+  in fetchurl (packages.${key} or {});
 
   propagatedBuildInputs = [
     astunparse