From 9284e6c24f849b03cbc2ac7d4d7e8c757232c93f Mon Sep 17 00:00:00 2001
From: Yury Samkevich <yurysamkevich@meta.com>
Date: Thu, 7 Nov 2024 06:40:11 -0800
Subject: [PATCH] pass CHGDISABLE to rustclink action

Summary: See previous diff for context.

Reviewed By: blackm00n

Differential Revision: D65478146

fbshipit-source-id: 0c555993b7da9516247fa479f0f103c312057701
---
 rust/tools/rustc_action.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/rust/tools/rustc_action.py b/rust/tools/rustc_action.py
index d15971bf9..e3cb36560 100755
--- a/rust/tools/rustc_action.py
+++ b/rust/tools/rustc_action.py
@@ -273,6 +273,11 @@ async def main() -> int:
             "SYSROOT_MULTIPLEXER_DEBUG",
             # Required on Windows for getpass.getuser() to work.
             "USERNAME",
+            # Option to disable hg pre-fork client.
+            # We might pass it to avoid long-running process created inside a per-action cgroup.
+            # Such long-running process make it impossible to clean up systemd slices.
+            # Context https://fb.workplace.com/groups/mercurialusers/permalink/2901424916673036/
+            "CHGDISABLE",
         ]
         if k in os.environ
     }