fix bump/ci actions to support new gitea runner

scripts/bump-version.sh

@@ -6,12 +6,17 @@
 # Expects a Gentoo environment with: go, pkgdev, git, curl, xz, jq.
 # Required env: BUMP_TOKEN, GITHUB_SERVER_URL, GITHUB_REPOSITORY.
 # Optional env: GITHUB_API_URL (defaults to ${GITHUB_SERVER_URL}/api/v1).
+#               BUMP_VERSION   target a specific upstream version (X.Y.Z, no
+#                              leading "v") instead of the latest release. An
+#                              explicit target may be older than the current
+#                              ebuild (useful to back out of a broken release).
 set -euo pipefail
 
 PN="gitea-runner"
 UPSTREAM_RSS="https://gitea.com/gitea/runner/releases.rss"
 UPSTREAM_ARCHIVE="https://gitea.com/api/v1/repos/gitea/runner/archive"
 UPSTREAM_GOMOD="https://gitea.com/api/v1/repos/gitea/runner/raw/go.mod"
+UPSTREAM_TAGS="https://gitea.com/api/v1/repos/gitea/runner/tags"
 
 : "${BUMP_TOKEN:?BUMP_TOKEN is required}"
 : "${GITHUB_SERVER_URL:?GITHUB_SERVER_URL is required}"
@@ -25,10 +30,22 @@ host="${GITHUB_SERVER_URL#*://}"
 api() { curl -fsSL -H "Authorization: token ${BUMP_TOKEN}" "$@"; }
 
 # --- determine versions ------------------------------------------------------
-latest=$(curl -fsSL "$UPSTREAM_RSS" \
-  | grep -oE '<title>v[0-9]+\.[0-9]+\.[0-9]+</title>' \
-  | head -1 | sed -E 's#</?title>##g; s/^v//')
-[ -n "$latest" ] || { echo "could not parse upstream version"; exit 1; }
+if [ -n "${BUMP_VERSION:-}" ]; then
+  latest="${BUMP_VERSION#v}"
+  echo "$latest" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+$' \
+    || { echo "BUMP_VERSION must look like X.Y.Z (got '${BUMP_VERSION}')"; exit 1; }
+  # Fail fast if the tag doesn't exist upstream, before cloning anything.
+  # (The raw endpoint silently falls back to the default branch for an
+  # unknown ref, so ask the tags API, which 404s.)
+  curl -fsSL "${UPSTREAM_TAGS}/v${latest}" -o /dev/null \
+    || { echo "upstream tag v${latest} not found"; exit 1; }
+  echo "targeting explicit version ${latest}"
+else
+  latest=$(curl -fsSL "$UPSTREAM_RSS" \
+    | grep -oE '<title>v[0-9]+\.[0-9]+\.[0-9]+</title>' \
+    | head -1 | sed -E 's#</?title>##g; s/^v//')
+  [ -n "$latest" ] || { echo "could not parse upstream version"; exit 1; }
+fi
 
 WORK=$(mktemp -d)
 git clone "${scheme}://x-access-token:${BUMP_TOKEN}@${host}/${GITHUB_REPOSITORY}.git" "$WORK"
@@ -39,11 +56,15 @@ current=$(find "$pkgdir" -name "${PN}-*.ebuild" \
   | sed -E "s#.*/${PN}-(.*)\.ebuild#\1#" | sort -V | tail -1)
 echo "upstream=${latest} current=${current}"
 
+[ "$latest" != "$current" ] || { echo "already at ${latest}"; exit 0; }
 newest=$(printf '%s\n%s\n' "$current" "$latest" | sort -V | tail -1)
-if [ "$newest" = "$current" ] && [ "$latest" != "$current" ]; then
-  echo "current ($current) is newer than upstream ($latest); nothing to do"; exit 0
+if [ "$newest" = "$current" ]; then
+  if [ -n "${BUMP_VERSION:-}" ]; then
+    echo "warning: explicit target ${latest} is older than current ${current}; downgrading"
+  else
+    echo "current ($current) is newer than upstream ($latest); nothing to do"; exit 0
+  fi
 fi
-[ "$latest" != "$current" ] || { echo "already at latest ($current)"; exit 0; }
 
 branch="bump/${PN}-${latest}"
 if api "${API}/repos/${GITHUB_REPOSITORY}/branches/${branch}" >/dev/null 2>&1; then