From 9bde77199c5f8e162e3212b7c6821085dbf6e75a Mon Sep 17 00:00:00 2001
From: Scott Wittenburg <scott.wittenburg@kitware.com>
Date: Wed, 8 Feb 2023 01:42:28 -0700
Subject: [PATCH] bindist: use append as a method, not assignable attr (#35379)

---
 lib/spack/spack/binary_distribution.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/spack/spack/binary_distribution.py b/lib/spack/spack/binary_distribution.py
index bc3b0089a70..e848c67a3aa 100644
--- a/lib/spack/spack/binary_distribution.py
+++ b/lib/spack/spack/binary_distribution.py
@@ -294,10 +294,12 @@ def update_spec(self, spec, found_list):
                         cur_entry["spec"] = new_entry["spec"]
                         break
                 else:
-                    current_list.append = {
-                        "mirror_url": new_entry["mirror_url"],
-                        "spec": new_entry["spec"],
-                    }
+                    current_list.append(
+                        {
+                            "mirror_url": new_entry["mirror_url"],
+                            "spec": new_entry["spec"],
+                        }
+                    )
 
     def update(self, with_cooldown=False):
         """Make sure local cache of buildcache index files is up to date.