From 8af8160dd9721eb0a5361d7818de82895c97554f Mon Sep 17 00:00:00 2001
From: Patrick Cloke <patrickc@matrix.org>
Date: Tue, 28 Nov 2023 08:08:00 -0500
Subject: [PATCH] SKip old versions.

---
 scripts-dev/schema_versions.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts-dev/schema_versions.py b/scripts-dev/schema_versions.py
index 01d052d16be0..5fd73251cdcb 100755
--- a/scripts-dev/schema_versions.py
+++ b/scripts-dev/schema_versions.py
@@ -51,6 +51,11 @@
 )
 
 
+# Skip versions of Synapse < v1.0, they're old and essentially not
+# compatible with today's federation.
+OLDEST_SHOWN_VERSION = version.parse("v1.0")
+
+
 def get_schema_versions(tag: git.Tag) -> Tuple[Optional[int], Optional[int]]:
     """Get the schema and schema compat versions for a tag."""
     schema_version = None
@@ -105,6 +110,10 @@ def get_tags(repo: git.Repo) -> Iterator[git.Tag]:
         if tag_version.is_prerelease or tag_version.is_postrelease or tag_version.local:
             continue
 
+        # Skip old versions.
+        if tag_version < OLDEST_SHOWN_VERSION:
+            continue
+
         tags.append((tag_version, tag))
 
     # Sort based on the version number (not lexically).