From 48c834f4555f65ebf7e2bbba8c4913ba1c016bd7 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erikj@element.io>
Date: Sun, 5 Jul 2026 09:13:07 +0000
Subject: [PATCH] Allow enabling the Rust Postgres driver in the Complement
 image

Emit `use_rust_driver: true` in the generated homeserver config when
`SYNAPSE_USE_RUST_DRIVER=true` is set (default off, so the psycopg2 path is
unchanged). Passed through Complement as `PASS_SYNAPSE_USE_RUST_DRIVER=true`,
this lets the Complement suite run against the native Rust backend.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01W3G4M92AmwSSZCbmtMJU3d
---
 docker/conf/homeserver.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/docker/conf/homeserver.yaml b/docker/conf/homeserver.yaml
index e2e1338673..e889f99e00 100644
--- a/docker/conf/homeserver.yaml
+++ b/docker/conf/homeserver.yaml
@@ -78,6 +78,9 @@ database:
 {% endif %}
     cp_min: {{ POSTGRES_CP_MIN or 5 }}
     cp_max: {{ POSTGRES_CP_MAX or 10 }}
+{% if SYNAPSE_USE_RUST_DRIVER == "true" %}
+  use_rust_driver: true
+{% endif %}
 {% else %}
 database:
   name: "sqlite3"