From 3819b77c816310361237b209e9dfb785f4b80710 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Thu, 16 Apr 2009 20:40:14 +0000
Subject: Add support in repos.conf to override the "masters" setting from
 layout.conf.

svn path=/main/trunk/; revision=13350
---
 man/portage.5                 | 13 ++++++++++---
 pym/portage/__init__.py       | 14 +++++++++++---
 pym/portage/dbapi/porttree.py | 27 +++++++++++++++++++--------
 3 files changed, 40 insertions(+), 14 deletions(-)

diff --git a/man/portage.5 b/man/portage.5
index 593410265..35cfdd777 100644
--- a/man/portage.5
+++ b/man/portage.5
@@ -552,8 +552,9 @@ x11\-libs/qt \-mysql
 Specifies \fIsite\-specific\fR repository configuration information. Note that
 configuration settings which are specified here do not apply to tools
 such as \fBrepoman\fR(1) and \fBegencache\fR(1) since their operations
-are inherently \fBnot\fR \fIsite\-specific\fR. Beware that use of
-\fBeclass\-overrides\fR is generally not recommended and that it may trigger
+are inherently \fBnot\fR \fIsite\-specific\fR. \fBWARNING:\fR Use of
+\fBrepos.conf\fR is generally not recommended since resulting changes in
+eclass inheritance (especially due ot \fBeclass\-overrides\fR) may trigger
 performance issues under some circumstances (see \fBbug #124041\fR).
 
 .I Example:
@@ -567,6 +568,10 @@ eclass\-overrides = java\-overlay java\-experimental
 # disable all eclass overrides for ebuilds from the gentoo repository
 [gentoo]
 eclass\-overrides =
+
+# override the metadata/layout.conf masters setting from the kde-testing repo
+[kde-testing]
+masters = gentoo kde
 .fi
 .RE
 .TP
@@ -579,7 +584,9 @@ Specifies information about the repository layout. Currently, only a single
 repositories which satisfy dependencies on eclasses and/or ebuilds. Each
 repository name should correspond the value of a \fBrepo_name\fR entry
 from one of the repositories that is configured via the \fBPORTDIR\fR or
-\fBPORTDIR_OVERLAY\fR variables (see \fBmake.conf\fR(5)).
+\fBPORTDIR_OVERLAY\fR variables (see \fBmake.conf\fR(5)). Site-specific
+overrides to \fBlayout.conf\fR settings may be specified in
+\fB/etc/portage/repos.conf\fR.
 
 .I Example:
 .nf
diff --git a/pym/portage/__init__.py b/pym/portage/__init__.py
index 8e73e211a..6fea2b82b 100644
--- a/pym/portage/__init__.py
+++ b/pym/portage/__init__.py
@@ -1001,11 +1001,19 @@ def _lazy_iuse_regex(iuse_implicit):
 	return regex
 
 class _local_repo_config(object):
-	__slots__ = ('eclass_overrides', 'name',)
+	__slots__ = ('eclass_overrides', 'masters', 'name',)
 	def __init__(self, name, repo_opts):
 		self.name = name
-		self.eclass_overrides = \
-			tuple(repo_opts.get('eclass-overrides', '').split())
+
+		eclass_overrides = repo_opts.get('eclass-overrides')
+		if eclass_overrides is not None:
+			eclass_overrides = tuple(eclass_overrides.split())
+		self.eclass_overrides = eclass_overrides
+
+		masters = repo_opts.get('masters')
+		if masters is not None:
+			masters = tuple(masters.split())
+		self.masters = masters
 
 class config(object):
 	"""
diff --git a/pym/portage/dbapi/porttree.py b/pym/portage/dbapi/porttree.py
index a9496c8eb..246a0d6f1 100644
--- a/pym/portage/dbapi/porttree.py
+++ b/pym/portage/dbapi/porttree.py
@@ -207,11 +207,27 @@ class portdbapi(dbapi):
 				continue
 
 			repo_name = self._repository_map.get(path)
+
+			loc_repo_conf = None
+			if local_repo_configs is not None:
+				if repo_name is not None:
+					loc_repo_conf = local_repo_configs.get(repo_name)
+				else:
+					loc_repo_conf = default_loc_repo_config
+
 			layout_filename = os.path.join(path, "metadata/layout.conf")
 			layout_file = KeyValuePairFileLoader(layout_filename, None, None)
 			layout_data, layout_errors = layout_file.load()
 			porttrees = []
-			for master_name in layout_data.get('masters', '').split():
+
+			masters = None
+			if loc_repo_conf is not None and \
+				loc_repo_conf.masters is not None:
+				masters = loc_repo_conf.masters
+			else:
+				masters = layout_data.get('masters', '').split()
+
+			for master_name in masters:
 				master_path = self.treemap.get(master_name)
 				if master_path is None:
 					writemsg_level(("Unavailable repository '%s' " + \
@@ -230,13 +246,8 @@ class portdbapi(dbapi):
 
 			porttrees.append(path)
 
-			if local_repo_configs is not None:
-				loc_repo_conf = None
-				if repo_name is not None:
-					loc_repo_conf = local_repo_configs.get(repo_name)
-				if loc_repo_conf is None:
-					loc_repo_conf = default_loc_repo_config
-				if loc_repo_conf is not None:
+			if loc_repo_conf is not None and \
+					loc_repo_conf.eclass_overrides is not None:
 					for other_name in loc_repo_conf.eclass_overrides:
 						other_path = self.treemap.get(other_name)
 						if other_path is None:
-- 
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