From c6494ff7c4c91e82e78df7202480f2948cca759b Mon Sep 17 00:00:00 2001
From: Doug Davis <ddavis@anaconda.com>
Date: Mon, 25 Sep 2023 10:12:59 -0500
Subject: [PATCH] awkward main has 'None' str as possibility

---
 src/dask_awkward/lib/optimize.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/dask_awkward/lib/optimize.py b/src/dask_awkward/lib/optimize.py
index 855c4c41..50ce634e 100644
--- a/src/dask_awkward/lib/optimize.py
+++ b/src/dask_awkward/lib/optimize.py
@@ -426,7 +426,7 @@ def _necessary_columns(dsk: HighLevelGraph) -> dict[str, list[str]]:
 
         necessary_columns = []
         for key in sorted(touched_data_keys):
-            if key == name:
+            if key == name or key == "None":
                 continue
 
             layer, column = key.split(".", 1)