.github: Port rust update action from old coreos-overlay

.github/workflows/rust-apply-patch.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "${GHA_SCRIPTS_DIR}/.github/workflows/common.sh"
+
+prepare_git_repo
+
+pushd "${SDK_OUTER_OVERLAY}"
+
+VERSION_OLD=$(sed -n "s/^DIST rustc-\(1\.[0-9]*\.[0-9]*\).*/\1/p" dev-lang/rust/Manifest | sort -ruV | head -n1)
+if [[ "${VERSION_NEW}" = "${VERSION_OLD}" ]]; then
+  echo "already the latest Rust, nothing to do"
+  exit 0
+fi
+
+# Replace (dev-lang/virtual)/rust versions in profiles/, e.g. package.accept_keywords.
+# Try to match all kinds of version specifiers, e.g. >=, <=, =, ~.
+find profiles -name 'package.*' | xargs sed -i "s/\([><]*=\|~\)*dev-lang\/rust-\S\+/\1dev-lang\/rust-${VERSION_NEW}/"
+find profiles -name 'package.*' | xargs sed -i "s/\([><]*=\|~\)*virtual\/rust-\S\+/\1virtual\/rust-${VERSION_NEW}/"
+
+EBUILD_FILENAME=$(get_ebuild_filename dev-lang/rust "${VERSION_OLD}")
+git mv "${EBUILD_FILENAME}" "dev-lang/rust/rust-${VERSION_NEW}.ebuild"
+EBUILD_FILENAME=$(get_ebuild_filename virtual/rust "${VERSION_OLD}")
+git mv "${EBUILD_FILENAME}" "virtual/rust/rust-${VERSION_NEW}.ebuild"
+
+popd
+
+URL="https://github.com/rust-lang/rust/releases/tag/${VERSION_NEW}"
+
+generate_update_changelog 'Rust' "${VERSION_NEW}" "${URL}" 'rust'
+
+commit_changes dev-lang/rust "${VERSION_OLD}" "${VERSION_NEW}" \
+               profiles \
+               virtual/rust
+
+cleanup_repo
+
+echo "VERSION_OLD=${VERSION_OLD}" >>"${GITHUB_OUTPUT}"
+echo 'UPDATE_NEEDED=1' >>"${GITHUB_OUTPUT}"

.github/workflows/rust-release-main.yaml

@@ -0,0 +1,47 @@
+name: Get the latest Rust release for main
+on:
+  schedule:
+    - cron:  '20 7 * * 2'
+  workflow_dispatch:
+
+jobs:
+  get-rust-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out scripts
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          path: scripts
+      - name: Figure out latest Rust release version
+        id: rust-latest-release
+        run: |
+          version=$(git ls-remote --tags 'https://github.com/rust-lang/rust' | cut -f2 | sed -n "/refs\/tags\/1\.[0-9]*\.[0-9]*$/s/^refs\/tags\///p" | sort -ruV | head -n1)
+          echo "VERSION_NEW=${version}" >>"${GITHUB_OUTPUT}"
+      - name: Set up Flatcar SDK
+        id: setup-flatcar-sdk
+        env:
+          WORK_SCRIPTS_DIR: "${{ github.workspace }}/scripts"
+          CHANNEL: main
+        run: scripts/.github/workflows/setup-flatcar-sdk.sh
+      - name: Apply patch for main
+        id: apply-patch-main
+        env:
+          GHA_SCRIPTS_DIR: "${{ github.workspace }}/scripts"
+          WORK_SCRIPTS_DIR: "${{ github.workspace }}/scripts"
+          VERSION_NEW: ${{ steps.rust-latest-release.outputs.VERSION_NEW }}
+          PACKAGES_CONTAINER: ${{ steps.setup-flatcar-sdk.outputs.PACKAGES_CONTAINER }}
+          SDK_NAME: ${{ steps.setup-flatcar-sdk.outputs.SDK_NAME }}
+        run: scripts/.github/workflows/rust-apply-patch.sh
+      - name: Create pull request for main
+        id: create-pull-request
+        uses: peter-evans/create-pull-request@v5
+        if: steps.apply-patch-main.outputs.UPDATE_NEEDED == 1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          path: scripts
+          branch: rust-${{ steps.rust-latest-release.outputs.VERSION_NEW }}-main
+          base: main
+          title: Upgrade dev-lang/rust and virtual/rust in main from ${{ steps.apply-patch-main.outputs.VERSION_OLD }} to ${{ steps.rust-latest-release.outputs.VERSION_NEW }}
+          body: Subject says it all.
+          labels: main