From 31a12931becf8048917b8cb35ba539ac5aea314b Mon Sep 17 00:00:00 2001
From: Teresia Olsson <teresia.olsson@helmholtz-berlin.de>
Date: Wed, 9 Sep 2026 18:03:03 +0200
Subject: [PATCH] Add required python environment for binder.

---
 .github/workflows/deploy-pages.yml | 3 +++
 runtime.txt                        | 1 +
 2 files changed, 4 insertions(+)
 create mode 100644 runtime.txt

diff --git a/.github/workflows/deploy-pages.yml b/.github/workflows/deploy-pages.yml
index 53dc653..0202bae 100644
--- a/.github/workflows/deploy-pages.yml
+++ b/.github/workflows/deploy-pages.yml
@@ -35,6 +35,9 @@ jobs:
       - name: Build Sphinx docs
         run: ./build-docs.sh
 
+      - name: Set Binder Python version
+        run: cp runtime.txt docs/build/html/runtime.txt
+
       - name: Publish built docs for Binder
         uses: peaceiris/actions-gh-pages@v4
         with:
diff --git a/runtime.txt b/runtime.txt
new file mode 100644
index 0000000..67ebc4e
--- /dev/null
+++ b/runtime.txt
@@ -0,0 +1 @@
+python-3.11