# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1647183209 -3600
# Node ID 186223795e4ae1b00121c48230c51d6e0a7b7105
# Parent  5b65721a75ebdf796002673b7adb2c6e2ef7ee6f
subsetmaker: stabilize the computation of `scratch` subset

`heads` is set, order of the element are not deterministic and we need to
stabilize that if we want to get reproducible results.

Differential Revision: https://phab.mercurial-scm.org/D12394

diff -r 5b65721a75eb -r 186223795e4a contrib/perf-utils/subsetmaker.py
--- a/contrib/perf-utils/subsetmaker.py	Tue Jul 20 15:07:10 2021 +0200
+++ b/contrib/perf-utils/subsetmaker.py	Sun Mar 13 15:53:29 2022 +0100
@@ -102,7 +102,9 @@
     for x in range(n):
         if not heads:
             break
-        pick = rand.choice(list(heads))
+        pickable = list(heads)
+        pickable.sort()
+        pick = rand.choice(pickable)
         heads.remove(pick)
         assert pick not in selected
         selected.add(pick)