commit 062d728789bb2ab6dc0c8dc6c82894d7caa7e6c9
author Alex Klein <saklein@chromium.org> Thu Jul 28 09:03:26 2022 -0600
committer Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> Fri Jul 29 21:07:44 2022 +0000
tree a68461fd1aa926ebeb1df81ff82153cd61dc6740
parent 573267fb28109a731eb51d2cde165705866f3bed

setup_board & build_packages: Add --backtrack option.

Add argument for --backtrack to allow configuring the value.
Lower the default to 10 to speed up local build times.

BUG=b:237827425
TEST=./run_tests, CQ

Cq-Depend: chromium:3792205
Change-Id: I75876eced876dd006433b48fbccf9cae49cea558
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3791832
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
Commit-Queue: Alex Klein <saklein@chromium.org>

scripts/setup_board.py

diff --git a/scripts/setup_board.py b/scripts/setup_board.py
index 973d32b..f7414da 100644
--- a/scripts/setup_board.py
+++ b/scripts/setup_board.py
@@ -101,6 +101,11 @@
                      action='store_true', default=False,
                      deprecated=deprecated % '--reuse-pkgs-from-local-boards',
                      help='Deprecated form of --reuse-pkgs-from-local-boards.')
+  build.add_argument(
+      '--backtrack',
+      type=int,
+      default=sysroot.BACKTRACK_DEFAULT,
+      help='See emerge --backtrack.')
 
   parser.add_argument(
       '--fewer-binhosts',
@@ -135,6 +140,7 @@
       init_board_pkgs=not opts.skip_board_pkg_init,
       local_build=opts.reuse_local,
       expanded_binhost_inheritance=opts.expanded_binhost_inheritance,
+      backtrack=opts.backtrack,
   )
 
   opts.Freeze()