From 4b38ebb009313076f43a53b4fd203e36633ea45e Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Wed, 3 Jan 2024 19:14:50 +0100
Subject: [PATCH] withFramedSink(): Receive interrupts on the stderr thread

Otherwise Nix deadlocks when Ctrl-C is received in withFramedSink():
the parent thread will wait forever for the stderr thread to shut
down.

Fixes the hang reported in https://github.com/NixOS/nix/issues/7245#issuecomment-1770560923.

(cherry picked from commit 24e70489e59f9ab75310382dc59df09796ea8df4)
---
 src/libstore/remote-store.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index f16949f42..77dc97e39 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -16,6 +16,8 @@
 #include "logging.hh"
 #include "callback.hh"
 #include "filetransfer.hh"
+#include "signals.hh"
+
 #include <nlohmann/json.hpp>
 
 namespace nix {
@@ -1071,6 +1073,7 @@ void RemoteStore::ConnectionHandle::withFramedSink(std::function<void(Sink & sin
     std::thread stderrThread([&]()
     {
         try {
+            ReceiveInterrupts receiveInterrupts;
             processStderr(nullptr, nullptr, false);
         } catch (...) {
             ex = std::current_exception();