Add a TODO note about replacing BlockerDB with an incremental depgraph

for solving bug #279623.

diff --git a/pym/_emerge/Scheduler.py b/pym/_emerge/Scheduler.py
index 68518e99f63fa67a953846697d0ea9639d1dec08..3bfc74124b6810d4a5aea59727078e7dde40e049 100644 (file)
--- a/pym/_emerge/Scheduler.py
+++ b/pym/_emerge/Scheduler.py
@@ -200,6 +200,11 @@ class Scheduler(PollScheduler):
                        self.edebug = 1
                self.pkgsettings = {}
                self._config_pool = {}
+
+               # TODO: Replace the BlockerDB with a depgraph of installed packages
+               # that's updated incrementally with each upgrade/uninstall operation
+               # This will be useful for making quick and safe decisions with respect
+               # to aggressive parallelization discussed in bug #279623.
                self._blocker_db = {}
                for root in trees:
                        self._config_pool[root] = []