From 3e6cec96a904f736552861a866dee677cc04bab1 Mon Sep 17 00:00:00 2001
From: Thomas A Caswell <tcaswell@gmail.com>
Date: Sat, 21 Mar 2020 21:19:10 -0400
Subject: [PATCH] Backport PR #16867: BLD: Auto-trigger macOS/Linux wheels on
 tags.

---
 .github/workflows/wheels.yml | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 .github/workflows/wheels.yml

diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
new file mode 100644
index 000000000000..c8c280e92029
--- /dev/null
+++ b/.github/workflows/wheels.yml
@@ -0,0 +1,34 @@
+on: 
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+*'
+jobs:
+  trigger_wheel_builds:
+    runs-on: ubuntu-latest
+    name: Trigger macOS and manylinux wheel builds
+    if: github.repository == 'matplotlib/matplotlib'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          repository: MacPython/matplotlib-wheels
+          ssh-key: ${{ secrets.WHEEL_DEPLOY_KEY }}
+          fetch-depth: 0
+      - name: Prepare build commit
+        id: commit
+        shell: bash
+        run: |
+          TAG="${GITHUB_REF#refs/tags/}"
+          BRANCH="$(echo ${TAG} | sed 's/^v\([0-9]\+\.[0-9]\+\)\.[0-9]\+.*$/build-\1.x/')"
+          echo "${BRANCH}"
+          echo "##[set-output name=branch;]${BRANCH}"
+          git branch ${BRANCH} master || true
+          git checkout ${BRANCH}
+          sed -i -e "s/\(- BUILD_COMMIT=\).\+/\1${TAG}/g" .travis.yml
+          git add .travis.yml
+          git config --global user.name 'Matplotlib Actions Bot'
+          git config --global user.email 'matplotlib@users.noreply.github.com'
+          git commit -m "REL: $TAG"
+      - name: Push to matplotlib-wheels
+        run: |
+          git push origin ${{ steps.commit.outputs.branch }}