From 5a0e91c290dad87f14feb1bb0d67557944634953 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Mon, 3 Nov 2008 08:00:07 +0000
Subject: Bug #245358 - For unsatisfied dependencies, display the parent nodes
 and the argument that pulled them in.

svn path=/main/trunk/; revision=11805
---
 pym/_emerge/__init__.py | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

(limited to 'pym/_emerge/__init__.py')

diff --git a/pym/_emerge/__init__.py b/pym/_emerge/__init__.py
index 6cf6ddc22..f65fda5dc 100644
--- a/pym/_emerge/__init__.py
+++ b/pym/_emerge/__init__.py
@@ -5288,10 +5288,6 @@ class depgraph(object):
 			xinfo='"%s"' % arg
 		# Discard null/ from failed cpv_expand category expansion.
 		xinfo = xinfo.replace("null/", "")
-		if myparent:
-			xfrom = '(dependency required by '+ \
-				green('"%s"' % myparent[2]) + \
-				red(' [%s]' % myparent[0]) + ')'
 		masked_packages = []
 		missing_use = []
 		missing_licenses = []
@@ -5386,8 +5382,24 @@ class depgraph(object):
 			show_mask_docs()
 		else:
 			print "\nemerge: there are no ebuilds to satisfy "+green(xinfo)+"."
-		if myparent:
-			print xfrom
+
+		# Show parent nodes and the argument that pulled them in.
+		node = myparent
+		msg = []
+		while node is not None:
+			msg.append('(dependency required by "%s" [%s])' % \
+				(colorize('INFORM', str(node.cpv)), node.type_name))
+			parent = None
+			for parent in self.digraph.parent_nodes(node):
+				if isinstance(parent, DependencyArg):
+					msg.append('(dependency required by "%s" [argument])' % \
+						(colorize('INFORM', str(parent))))
+					parent = None
+					break
+			node = parent
+		for line in msg:
+			print line
+
 		print
 
 	def _select_pkg_highest_available(self, root, atom, onlydeps=False):
-- 
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