From 5b5280e3e5e37c1cf2ed758db30f221c438cc33f Mon Sep 17 00:00:00 2001
From: Erik Johnston <erikj@element.io>
Date: Tue, 2 Jul 2024 12:38:29 +0100
Subject: [PATCH] Fix building debian packages for sid (#17389)

Sid now defaults to python3.12, and our pinned version of cffi (1.5.1)
does not have wheels for 3.12. This installing cffi to fail as we did
not have the correct libs installed to build from source.
---
 changelog.d/17389.misc         | 1 +
 docker/Dockerfile-dhvirtualenv | 2 ++
 2 files changed, 3 insertions(+)
 create mode 100644 changelog.d/17389.misc

diff --git a/changelog.d/17389.misc b/changelog.d/17389.misc
new file mode 100644
index 00000000000..7022ed93d9c
--- /dev/null
+++ b/changelog.d/17389.misc
@@ -0,0 +1 @@
+Fix building debian package for debian sid.
diff --git a/docker/Dockerfile-dhvirtualenv b/docker/Dockerfile-dhvirtualenv
index b7679924c24..f0001445678 100644
--- a/docker/Dockerfile-dhvirtualenv
+++ b/docker/Dockerfile-dhvirtualenv
@@ -73,6 +73,8 @@ RUN apt-get update -qq -o Acquire::Languages=none \
     curl \
     debhelper \
     devscripts \
+    # Required for building cffi from source.
+    libffi-dev \
     libsystemd-dev \
     lsb-release \
     pkg-config \