coder · f0ssel · Jun 17, 2026 · Jun 17, 2026 · Jun 17, 2026
@@ -29,6 +29,7 @@ ignorePatterns:
   - pattern: "claude.ai"
   - pattern: "splunk.com"
   - pattern: "stackoverflow.com/questions"
+  - pattern: "reflectoring.io"
   - pattern: "developer.hashicorp.com/terraform/language"
   - pattern: "platform.openai.com"
   - pattern: "api.openai.com"

@@ -1,11 +1,16 @@
-# Automatically backport merged PRs to the last N release branches when the
-# "backport" label is applied. Works whether the label is added before or
-# after the PR is merged.
+# Automatically backport merged PRs to the last 3 release branches plus all
+# active ESR branches when the "backport" label is applied. Works whether the
+# label is added before or after the PR is merged.
+#
+# ESR (Extended Support Release) versions are defined in
+# scripts/lib/esr_versions.sh. It is typical for one of the latest 3 releases
+# to also be an ESR; duplicates are removed automatically.
 #
 # Usage:
 #   1. Add the "backport" label to a PR targeting main.
 #   2. When the PR merges (or if already merged), the workflow detects the
-#      latest release/* branches and opens one cherry-pick PR per branch.
+#      latest release/* branches and ESR branches, then opens one cherry-pick
+#      PR per branch.
 #
 # The created backport PRs follow existing repo conventions:
 #   - Branch:  backport/<pr>-to-<version>
@@ -49,6 +54,10 @@ jobs:
       - name: Find latest release branches
         id: find
         run: |
+          # Source the shared ESR version list.
+          # shellcheck source=../../scripts/lib/esr_versions.sh
+          source "${GITHUB_WORKSPACE}/scripts/lib/esr_versions.sh"
+
           # List remote release branches matching the exact release/2.X
           # pattern (no suffixes like release/2.31_hotfix), sort by minor
           # version descending, and take the top 3.
@@ -60,6 +69,18 @@ jobs:
               | head -3
           )
 
+          # Append ESR release branches that are not already in the list.
+          for minor in "${ESR_VERSIONS[@]}"; do
+            esr_branch="release/2.${minor}"
+            if echo "$BRANCHES" | grep -qxF "$esr_branch"; then
+              continue
+            fi
+            # Only add if the branch actually exists on the remote.
+            if git branch -r | grep -qE "^\s*origin/${esr_branch}$"; then
+              BRANCHES=$(printf '%s\n%s' "$BRANCHES" "$esr_branch")
+            fi
+          done
+
           if [ -z "$BRANCHES" ]; then
             echo "No release branches found."
             echo "branches=[]" >> "$GITHUB_OUTPUT"

diff --git a/docs/about/contributing/CONTRIBUTING.md b/docs/about/contributing/CONTRIBUTING.md
@@ -4,7 +4,7 @@
 
 <div class="tabs">
 
-To get started with Coder, the easiest way to set up the required environment is to use the provided [Nix environment](https://github.com/coder/coder/tree/main/nix).
+To get started with Coder, the easiest way to set up the required environment is to use the provided [Nix environment](https://github.com/coder/coder/blob/main/flake.nix).
 Learn more [how Nix works](https://nixos.org/guides/how-nix-works).
 
 ### Nix
@@ -305,9 +305,13 @@ to use the original commit title instead of the PR title.
 When a merged PR on `main` should also ship in older releases, add the
 `backport` label to the PR. The
 [backport workflow](https://github.com/coder/coder/blob/main/.github/workflows/backport.yaml)
-will automatically detect the latest three `release/*` branches,
-cherry-pick the merge commit onto each one, and open PRs for
-review.
+will automatically detect the latest three `release/*` branches plus any
+active ESR (Extended Support Release) branches, cherry-pick the merge
+commit onto each one, and open PRs for review. A release that is both in
+the latest three and an active ESR is only backported once.
+
+Active ESR versions are defined in
+[`scripts/lib/esr_versions.sh`](https://github.com/coder/coder/blob/main/scripts/lib/esr_versions.sh).
 
 The label can be added before or after the PR is merged. Each backport
 PR reuses the original title (e.g.

diff --git a/scripts/lib/esr_versions.sh b/scripts/lib/esr_versions.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+# Known active ESR (Extended Support Release) minor versions.
+# Update this list when new ESR versions are designated or old ones reach end
+# of life. This file is sourced by the backport workflow and the release
+# calendar generator.
+# shellcheck disable=SC2034 # ESR_VERSIONS is used by the sourcing script.
+ESR_VERSIONS=(29 34)
diff --git a/scripts/update-release-calendar.sh b/scripts/update-release-calendar.sh
@@ -16,9 +16,10 @@ DOCS_FILE="docs/install/releases/index.md"
 CALENDAR_START_MARKER="<!-- RELEASE_CALENDAR_START -->"
 CALENDAR_END_MARKER="<!-- RELEASE_CALENDAR_END -->"
 
-# Known active ESR (Extended Support Release) minor versions.
-# Update this list when new ESR versions are designated or old ones reach end of life.
-ESR_VERSIONS=(29 34)
+# Source the shared ESR version list used by multiple scripts and workflows.
+SOURCE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+# shellcheck source=scripts/lib/esr_versions.sh
+source "${SOURCE_DIR}/lib/esr_versions.sh"
 
 # Check if a minor version is a known active ESR version.
 is_esr_version() {