Allow parallel_emerge to be used when network is unavailable.

parallel_emerge

 #!/usr/bin/python2.6
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Program to run emerge in parallel, for significant speedup.
 
 Usage:
  ./parallel_emerge [--board=BOARD] [--workon=PKGS] [--no-workon-deps]
                    [emerge args] package"
@@ skipping 1105 matching lines @@
         for db_pkg in final_db.match_pkgs(pkg):
           deps_map[str(db_pkg.cpv)]["mandatory_source"] = True
     else:
       for pkg in self.mandatory_source.copy():
         for db_pkg in final_db.match_pkgs(pkg):
           MergeChildren(str(db_pkg.cpv), "mandatory_source")
 
       cycles = FindCycles()
       if self.rebuild:
         local_pkgs = LocalPackageDatabase()
-        remote_pkgs = RemotePackageDatabase(emerge.settings["PORTAGE_BINHOST"])
+        remote_pkgs = {}
+        if "--getbinpkg" in emerge.opts:
+          remote_pkgs = RemotePackageDatabase(emerge.settings["PORTAGE_BINHOST"])
         AutoRebuildDeps(local_pkgs, remote_pkgs, cycles)
 
     # We need to remove installed packages so that we can use the dependency
     # ordering of the install process to show us what cycles to crack. Once
     # we've done that, we also need to recalculate our list of cycles so that
     # we don't include the installed packages in our cycles.
     RemoveInstalledPackages()
     SanitizeTree()
     if deps_map:
       if "--usepkg" in emerge.opts:
@@ skipping 548 matching lines @@
   # If we already upgraded portage, we don't need to do so again. But we do
   # need to upgrade the rest of the packages. So we'll go ahead and do that.
   if portage_upgrade:
     args = sys.argv[1:] + ["--nomerge=sys-apps/portage"]
     os.execvp(os.path.realpath(sys.argv[0]), args)
 
   print "Done"
 
 if __name__ == "__main__":
   main()