From d65ef848eb14f6e0c69e2a9614776a814d330244 Mon Sep 17 00:00:00 2001
From: Eric Eastwood <erice@element.io>
Date: Tue, 17 Mar 2026 10:51:53 -0500
Subject: [PATCH] Fix `Build and push complement image` CI job not having
 Poetry for `complement.sh` (#19578)

:x: `Build and push complement image`,
https://github.com/element-hq/synapse/actions/runs/23176317296/job/67339146082
```
scripts-dev/complement.sh: line 227: poetry: command not found
```

Follow-up to https://github.com/element-hq/synapse/pull/19523

This regressed in https://github.com/element-hq/synapse/pull/19476


### Testing strategy

1. Visit
https://github.com/element-hq/synapse/actions/workflows/push_complement_image.yml
 1. **Run workflow**:
- **Use workflow from:**
`madlittlemods/fix-complement-push-image-ci-job-poetry`
     - **Branch:** `develop`
 1. Wait for CI to run and pass :white_check_mark:
---
 .github/workflows/push_complement_image.yml | 4 ++++
 changelog.d/19578.bugfix                    | 1 +
 2 files changed, 5 insertions(+)
 create mode 100644 changelog.d/19578.bugfix

diff --git a/.github/workflows/push_complement_image.yml b/.github/workflows/push_complement_image.yml
index 7793172e55..12599457dc 100644
--- a/.github/workflows/push_complement_image.yml
+++ b/.github/workflows/push_complement_image.yml
@@ -47,6 +47,10 @@ jobs:
         if: github.event_name == 'push'
         with:
           ref: master
+      # We use `poetry` in `complement.sh`
+      - uses: matrix-org/setup-python-poetry@5bbf6603c5c930615ec8a29f1b5d7d258d905aa4 # v2.0.0
+        with:
+          poetry-version: "2.2.1"
       - name: Login to registry
         uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3.7.0
         with:
diff --git a/changelog.d/19578.bugfix b/changelog.d/19578.bugfix
new file mode 100644
index 0000000000..dbaf4be7e8
--- /dev/null
+++ b/changelog.d/19578.bugfix
@@ -0,0 +1 @@
+Fix `Build and push complement image` CI job not having `poetry` available for the Complement runner script.