[PATCH v2 1/3] devtool: upgrade: ignore changelogs from 3rd party

[<daniel.turull@ericsson.com>]

From: Daniel Turull <daniel.turull@ericsson.com>

Some upstream projects bundle vendored dependencies in their source
tree (e.g. nghttp2 ships third-party/mruby, which has its own
NEWS.md). The changelog extractor could mistake one of these
vendored changelogs for the recipe's own, misattributing unrelated
upstream changes to the package being upgraded.

Exclude paths under common vendoring directory names (third-party,
vendor, external, deps, etc.) from changelog candidates.

AI-Generated: Kiro with Claude Sonnet 5
Signed-off-by: Daniel Turull <daniel.turull@ericsson.com>
---
 scripts/lib/devtool/upgrade.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/scripts/lib/devtool/upgrade.py b/scripts/lib/devtool/upgrade.py
index 13d51bf952..495a5b8217 100644
--- a/scripts/lib/devtool/upgrade.py
+++ b/scripts/lib/devtool/upgrade.py
@@ -55,6 +55,13 @@ _CHANGELOG_BASENAMES = {
     'perldelta.pod',
 }
 
+# Path components indicating a bundled/vendored dependency rather than the
+# recipe's own source, so its changelog-like files should not be mistaken
+# for the recipe's own changes (e.g. third-party/mruby/NEWS.md in nghttp2).
+_VENDORED_PATH_RE = re.compile(
+    r'(^|/)(third[-_]party|vendor|vendored|external|extern|deps|3rdparty)(/|$)',
+    re.IGNORECASE)
+
 def _run(cmd, cwd=''):
     logger.debug("Running command %s> %s" % (cwd,cmd))
     return bb.process.run('%s' % cmd, cwd=cwd)
@@ -591,6 +598,9 @@ def _extract_changelog(srctree, pn, old_ver, new_ver, old_tag, new_tag, workspac
     try:
         stdout, _ = _run('git diff --name-only %s %s' % (old_tag, new_tag), srctree)
         changed_files = [f.strip() for f in stdout.splitlines() if f.strip()]
+        # Exclude bundled/vendored dependencies; their changelogs are not
+        # relevant to this recipe's own version bump.
+        changed_files = [f for f in changed_files if not _VENDORED_PATH_RE.search(f)]
 
         # First pass: collect per-version release notes that changed
         # Matches files with a version number whose path suggests release notes