From c2f9181c848a751d31851601dfdc8ce9f038050a Mon Sep 17 00:00:00 2001
From: Pacman99 <pachum99@myrdd.info>
Date: Mon, 17 May 2021 10:27:58 -0700
Subject: [PATCH] flattenTree: ignore attributes that throw errors

---
 flattenTree.nix | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/flattenTree.nix b/flattenTree.nix
index 3ad30d0..c3a535b 100644
--- a/flattenTree.nix
+++ b/flattenTree.nix
@@ -3,9 +3,10 @@ let
   op = sum: path: val:
     let
       pathStr = builtins.concatStringsSep "/" path;
+      tryCheckSet = builtins.tryEval ((builtins.typeOf val) == "set");
     in
-    if (builtins.typeOf val) != "set" then
-    # ignore that value
+    if !tryCheckSet.value then
+    # ignore anything thats not a set or throws an error
     # builtins.trace "${pathStr} is not of type set"
       sum
     else if val ? type && val.type == "derivation" then