From ee0f7be746b2ac9f21cb128995266a5804912c0d Mon Sep 17 00:00:00 2001
From: DavHau <hsngrmpf+github@gmail.com>
Date: Mon, 28 Apr 2025 16:12:03 +0700
Subject: [PATCH] breakpointHook: support FODs and non-sandboxed builds

Remove the static reference to /build, instead evaluate NIX_BUILD_TOP
---
 pkgs/by-name/br/breakpointHook/attach.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkgs/by-name/br/breakpointHook/attach.sh b/pkgs/by-name/br/breakpointHook/attach.sh
index 0605adafdb62..afc192342fbc 100755
--- a/pkgs/by-name/br/breakpointHook/attach.sh
+++ b/pkgs/by-name/br/breakpointHook/attach.sh
@@ -56,6 +56,10 @@ elif [ "$(echo "$pids" | wc -l)" -ne 1 ]; then
 fi
 pid="$(echo "$pids" | head -n1)"
 
+
+# get the build top level directory inside the sandbox (eg. /build)
+buildDir=$(getVar NIX_BUILD_TOP)
+
 # bash is needed to load the env vars, as we do not know the syntax of the debug shell.
 # bashInteractive is used instead of bash, as we depend on it anyways, due to it being
 #   the default debug shell
@@ -71,11 +75,11 @@ pwd="$(readlink /proc/$pid/cwd)"
 # If another shell is chosen via `debugShell`, it will only have simple env vars avaialable.
 exec nsenter --mount --ipc --uts --pid  --net --target "$pid" "$bashInteractive" -c "
   set -eu -o pipefail
-  source /build/env-vars
+  source \"$buildDir/env-vars\"
   cd \"$pwd\"
   if [ -n \"$debugShell\" ]; then
     exec \"$debugShell\"
   else
-    exec \"$bashInteractive\" --init-file /build/env-vars
+    exec \"$bashInteractive\" --init-file \"$buildDir/env-vars\"
   fi
 "