Bug #245358 - For unsatisfied dependencies, display the parent nodes and the

argument that pulled them in.

svn path=/main/trunk/; revision=11805

diff --git a/pym/_emerge/__init__.py b/pym/_emerge/__init__.py
index 6cf6ddc22e4efb45d3bef8553cde825400d81d89..f65fda5dc1e6f2f7075a9120d8dc6b688b38faf1 100644 (file)
--- 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):