From ddfbf3adbc1e5855e1603eeb1ee71d2e57f5b3b1 Mon Sep 17 00:00:00 2001
From: Andreas Perhab <andreas.perhab@wt-io-it.at>
Date: Mon, 18 Sep 2023 10:09:59 +0200
Subject: [PATCH] [FIX] ci: use PIP_CONSTRAINT workaround for pyyaml

---
 .github/workflows/ci.yaml | 3 ++-
 pip_constraint.txt        | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 pip_constraint.txt

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d0f3e22c..010a4b55 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -63,7 +63,8 @@ jobs:
       - run: pip install poetry
       - name: Patch $PATH
         run: echo "$HOME/.local/bin" >> $GITHUB_PATH
-      - run: poetry install
+      # using PIP_CONSTRAINT for pyyaml, see https://github.com/yaml/pyyaml/issues/736
+      - run: PIP_CONSTRAINT=pip_constraint.txt poetry install
       # Build images
       - run: poetry run ./hooks/build
       # Test
diff --git a/pip_constraint.txt b/pip_constraint.txt
new file mode 100644
index 00000000..8d5d83b6
--- /dev/null
+++ b/pip_constraint.txt
@@ -0,0 +1,2 @@
+# see https://github.com/yaml/pyyaml/issues/736
+Cython < 3.0