[gentoo-commits] proj/portage:master commit in: pym/_emerge/

["Zac Medico" <zmedico@gentoo.org>]

commit:     d0ead65b8019f03bad69d88963ac2aa79a8f7693
Author:     Zac Medico <zmedico <AT> gentoo <DOT> org>
AuthorDate: Sun Apr 10 20:03:11 2011 +0000
Commit:     Zac Medico <zmedico <AT> gentoo <DOT> org>
CommitDate: Sun Apr 10 20:03:11 2011 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=d0ead65b

Scheduler: add more info in docstring comments

This clarifies the purposes of _system_merge_started and _choose_pkg.

---
 pym/_emerge/Scheduler.py |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/pym/_emerge/Scheduler.py b/pym/_emerge/Scheduler.py
index 06eeed5..d557a14 100644
--- a/pym/_emerge/Scheduler.py
+++ b/pym/_emerge/Scheduler.py
@@ -1375,6 +1375,10 @@ class Scheduler(PollScheduler):
 	def _system_merge_started(self, merge):
 		"""
 		Add any unsatisfied runtime deps to self._unsatisfied_system_deps.
+		In general, this keeps track of installed system packages with
+		unsatisfied RDEPEND or PDEPEND (circular dependencies). It can be
+		a fragile situation, so we don't execute any unrelated builds until
+		the circular dependencies are built and intstalled.
 		"""
 		graph = self._digraph
 		if graph is None:
@@ -1554,7 +1558,9 @@ class Scheduler(PollScheduler):
 
 	def _choose_pkg(self):
 		"""
-		Choose a task that has all it's dependencies satisfied.
+		Choose a task that has all its dependencies satisfied. This is used
+		for parallel build scheduling, and ensures that we don't build
+		anything with deep dependencies that have yet to be merged.
 		"""
 
 		if self._choose_pkg_return_early: