tree 8ea6552a7ab1cd308e766cffde84a69c56d6ce41
parent d028b9b54ed2808f34f7b43a637bb275fa84026b
author Ted Pudlik <tpudlik@google.com> 1647999316 +0000
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1648786481 +0000

pw_build: Introduce a pip lock

The pip lock prevents pip from being run concurrently with any other
Python action. This should reduce flakiness due to modules being
(un)installed while they're imported by other parts of the build.

This version only works on Linux and Mac: it's a no-op on Windows. I'll
develop a Windows version as a followup, but submitting this now to
reduce user pain.

Bug: b/227670947
Change-Id: Ife2cb66b2fbadbee8d61c0641165909dd50accba
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/88861
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Ted Pudlik <tpudlik@google.com>