core: Preserve existing XDG_CURRENT_DESKTOP (#7347)

* Preserve existing XDG_CURRENT_DESKTOP

* fix

---------

Co-authored-by: vaxerski <vaxry@vaxry.net>

src/Compositor.cpp

@@ -305,6 +305,10 @@ void CCompositor::initServer(std::string socketName, int socketFd) {
 
     setenv("WAYLAND_DISPLAY", m_szWLDisplaySocket.c_str(), 1);
     setenv("XDG_SESSION_TYPE", "wayland", 1);
+    if (!getenv("XDG_CURRENT_DESKTOP")) {
+        setenv("XDG_CURRENT_DESKTOP", "Hyprland", 1);
+        m_bDesktopEnvSet = true;
+    }
 
     initManagers(STAGE_BASICINIT);
 
@@ -422,6 +426,7 @@ void CCompositor::cleanEnvironment() {
     // in main
     unsetenv("HYPRLAND_CMD");
     unsetenv("XDG_BACKEND");
+    if (m_bDesktopEnvSet)
         unsetenv("XDG_CURRENT_DESKTOP");
 
     if (m_pAqBackend->hasSession()) {

src/Compositor.hpp

@@ -91,6 +91,7 @@ class CCompositor {
     bool                                       m_bNextIsUnsafe   = false;
     CMonitor*                                  m_pUnsafeOutput   = nullptr; // fallback output for the unsafe state
     bool                                       m_bIsShuttingDown = false;
+    bool                                       m_bDesktopEnvSet  = false;
 
     // ------------------------------------------------- //
 

src/main.cpp

@@ -36,7 +36,6 @@ int main(int argc, char** argv) {
     setenv("XDG_BACKEND", "wayland", 1);
     setenv("_JAVA_AWT_WM_NONREPARENTING", "1", 1);
     setenv("MOZ_ENABLE_WAYLAND", "1", 1);
-    setenv("XDG_CURRENT_DESKTOP", "Hyprland", 1);
 
     // parse some args
     std::string              configPath;