From 0c317f25080972c949139460e1e6c8a63daaf05a Mon Sep 17 00:00:00 2001
From: "Sv. Lockal" <AngryLoki@users.noreply.github.com>
Date: Wed, 6 Aug 2025 20:01:02 +0800
Subject: [PATCH] internal: Fix compilation with libc++ (#11355)

Build with libc++ (Clang-20, Gentoo LLVM profile) fails due to transitive include with:
```
s_Sys.cpp.o -c ../hyprland-source/hyprpm/src/helpers/Sys.cpp
../hyprland-source/hyprpm/src/helpers/Sys.cpp:24:24: error: implicit instantiation of undefined template 'std::basic_ostringstream<char>'
   24 |     std::ostringstream oss;
      |                        ^
/usr/include/c++/v1/__fwd/sstream.h:28:28: note: template is declared here
   28 | class _LIBCPP_TEMPLATE_VIS basic_ostringstream;
      |                            ^
1 error generated.
```
---
 hyprpm/src/helpers/Sys.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hyprpm/src/helpers/Sys.cpp b/hyprpm/src/helpers/Sys.cpp
index e7ac8854..c18d4748 100644
--- a/hyprpm/src/helpers/Sys.cpp
+++ b/hyprpm/src/helpers/Sys.cpp
@@ -8,6 +8,7 @@
 #include <print>
 #include <filesystem>
 #include <algorithm>
+#include <sstream>
 
 #include <hyprutils/os/Process.hpp>
 #include <hyprutils/string/VarList.hpp>