[gentoo-portage-dev] [PATCH 1 of 3] repoman: get default to update changelog from layout.conf

[Fabian Groffen <grobian@gentoo.org>]

Updating the ChangeLog file may be desirable in more repos than just the
one named 'gentoo', like e.g. the Prefix one.  Hence, make this default
configurable though metadata/layout.conf.

This commit must go accompanied by a commit to
gentoo-x86/metadata/layout.conf that adds the following bit:

# Bug #337853 - gentoo's council says to enable
# --echangelog by default for the "gentoo" repo
update-changelog = true

diff --git a/bin/repoman b/bin/repoman
--- a/bin/repoman
+++ b/bin/repoman
@@ -644,10 +644,7 @@
 		print(prefix + line)
 	sys.exit(1)
 
-if options.echangelog is None and \
-	repo_config.name == "gentoo":
-	# Bug #337853 - gentoo's council says to enable
-	# --echangelog by default for the "gentoo" repo
+if options.echangelog is None and repo_config.update_changelog:
 	options.echangelog = 'y'
 
 if vcs is None:
diff --git a/pym/portage/repository/config.py b/pym/portage/repository/config.py
--- a/pym/portage/repository/config.py
+++ b/pym/portage/repository/config.py
@@ -48,7 +48,7 @@
 		'eclass_overrides', 'eclass_locations', 'format', 'location',
 		'main_repo', 'manifest_hashes', 'masters', 'missing_repo_name',
 		'name', 'priority', 'sign_manifest', 'sync', 'thin_manifest',
-		'user_location')
+		'update_changelog', 'user_location')
 
 	def __init__(self, name, repo_opts):
 		"""Build a RepoConfig with options in repo_opts
@@ -126,6 +126,7 @@
 		self.create_manifest = True
 		self.disable_manifest = False
 		self.manifest_hashes = None
+		self.update_changelog = False
 		self.cache_format = None
 
 	def get_pregenerated_cache(self, auxdbkeys, readonly=True, force=False):
@@ -431,6 +432,9 @@
 						DeprecationWarning)
 			repo.manifest_hashes = manifest_hashes
 
+			if layout_data.get('update-changelog', '').lower() == 'true':
+				repo.update_changelog = True
+
 		#Take aliases into account.
 		new_prepos = {}
 		for repo_name, repo in prepos.items():