From 2937dcde70a10c00d6b72124593241b13fe9e1a9 Mon Sep 17 00:00:00 2001
From: Mark Isaacson <markisaa@meta.com>
Date: Tue, 6 Feb 2024 16:39:01 -0800
Subject: [PATCH] Comment for compute_rerun

Summary: This took a little figuring out when I was reading the code, so figured I'd add a comment.

Reviewed By: ndmitchell

Differential Revision: D53361033

fbshipit-source-id: 90c12ecd4400920d49548f87d53adde104ba0666
---
 btd/src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/btd/src/lib.rs b/btd/src/lib.rs
index f21de12..09ec539 100644
--- a/btd/src/lib.rs
+++ b/btd/src/lib.rs
@@ -266,6 +266,9 @@ pub fn main(args: Args) -> anyhow::Result<()> {
     Ok(())
 }
 
+/// Tells us which things might have changed, and therefore what
+/// we should run buck2 targets on at the diff revision to
+/// properly check if it really did change.
 fn compute_rerun(
     base: &Targets,
     changes: &Changes,