# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 1519680723 28800
# Node ID ab81e5a8fba5a23fd2fe1d14448fc007467426ea
# Parent  1fa35ca345a59ab01ea3d2e145414b59f089837d
phases: write phaseroots deterministically

self.phaseroots is a list of sets of binary nodes.

Let's sort the nodes before writing so the phaseroots file is
written out deterministically.

Differential Revision: https://phab.mercurial-scm.org/D2468

diff -r 1fa35ca345a5 -r ab81e5a8fba5 mercurial/phases.py
--- a/mercurial/phases.py	Sat Feb 17 11:19:52 2018 -0700
+++ b/mercurial/phases.py	Mon Feb 26 13:32:03 2018 -0800
@@ -326,7 +326,7 @@
 
     def _write(self, fp):
         for phase, roots in enumerate(self.phaseroots):
-            for h in roots:
+            for h in sorted(roots):
                 fp.write('%i %s\n' % (phase, hex(h)))
         self.dirty = False