systemd: add HYPRLAND_NO_SD_NOTIFY

fixes #4217

src/Compositor.cpp

@@ -125,13 +125,12 @@ void CCompositor::initServer() {
 
     initManagers(STAGE_PRIORITY);
 
-    if (const auto ENV = getenv("HYPRLAND_TRACE"); ENV && std::string(ENV) == "1")
+    if (envEnabled("HYPRLAND_TRACE"))
         Debug::trace = true;
 
     wlr_log_init(WLR_INFO, NULL);
 
-    const auto LOGWLR = getenv("HYPRLAND_LOG_WLR");
+    if (envEnabled("HYPRLAND_LOG_WLR"))
-    if (LOGWLR && std::string(LOGWLR) == "1")
         wlr_log_init(WLR_DEBUG, Debug::wlrLog);
     else
         wlr_log_init(WLR_ERROR, Debug::wlrLog);
@@ -343,7 +342,7 @@ void CCompositor::cleanup() {
     Debug::shuttingDown = true;
 
 #ifdef USES_SYSTEMD
-    if (sd_booted() > 0)
+    if (sd_booted() > 0 && !envEnabled("HYPRLAND_NO_SD_NOTIFY"))
         sd_notify(0, "STOPPING=1");
 #endif
 
@@ -540,10 +539,11 @@ void CCompositor::startCompositor() {
     g_pHyprRenderer->setCursorFromName("left_ptr");
 
 #ifdef USES_SYSTEMD
-    if (sd_booted() > 0)
+    if (sd_booted() > 0) {
         // tell systemd that we are ready so it can start other bond, following, related units
-        sd_notify(0, "READY=1");
+        if (!envEnabled("HYPRLAND_NO_SD_NOTIFY"))
-    else
+            sd_notify(0, "READY=1");
+    } else
         Debug::log(LOG, "systemd integration is baked in but system itself is not booted à la systemd!");
 #endif
 
@@ -2598,9 +2598,7 @@ int CCompositor::getNewSpecialID() {
 }
 
 void CCompositor::performUserChecks() {
-    const auto atomicEnv    = getenv("WLR_DRM_NO_ATOMIC");
+    if (g_pConfigManager->getInt("general:allow_tearing") == 1 && !envEnabled("WLR_DRM_NO_ATOMIC")) {
-    const auto atomicEnvStr = std::string(atomicEnv ? atomicEnv : "");
-    if (g_pConfigManager->getInt("general:allow_tearing") == 1 && atomicEnvStr != "1") {
         g_pHyprNotificationOverlay->addNotification("You have enabled tearing, but immediate presentations are not available on your configuration. Try adding "
                                                     "env = WLR_DRM_NO_ATOMIC,1 to your config.",
                                                     CColor(0), 15000, ICON_WARNING);

src/helpers/MiscFunctions.cpp

@@ -791,4 +791,11 @@ uint32_t glFormatToType(uint32_t gl) {
         GL_UNSIGNED_INT_2_10_10_10_REV :
 #endif
         GL_UNSIGNED_BYTE;
+}
+
+bool envEnabled(const std::string& env) {
+    const auto ENV = getenv(env.c_str());
+    if (!ENV)
+        return false;
+    return std::string(ENV) == "1";
 }

src/helpers/MiscFunctions.hpp

@@ -35,6 +35,7 @@ std::vector<SCallstackFrameInfo> getBacktrace();
 void                             throwError(const std::string& err);
 uint32_t                         drmFormatToGL(uint32_t drm);
 uint32_t                         glFormatToType(uint32_t gl);
+bool                             envEnabled(const std::string& env);
 
 template <typename... Args>
 [[deprecated("use std::format instead")]] std::string getFormat(std::format_string<Args...> fmt, Args&&... args) {

src/main.cpp

@@ -102,7 +102,7 @@ int main(int argc, char** argv) {
 
     g_pCompositor->initServer();
 
-    if (!getenv("HYPRLAND_NO_RT") || configStringToInt(std::string(getenv("HYPRLAND_NO_RT"))) == 0)
+    if (!envEnabled("HYPRLAND_NO_RT"))
         Init::gainRealTime();
 
     Debug::log(LOG, "Hyprland init finished.");

src/render/Renderer.cpp

@@ -9,9 +9,7 @@ extern "C" {
 }
 
 CHyprRenderer::CHyprRenderer() {
-    const auto ENV = getenv("WLR_DRM_NO_ATOMIC");
+    if (envEnabled("WLR_DRM_NO_ATOMIC"))
-
-    if (ENV && std::string(ENV) == "1")
         m_bTearingEnvSatisfied = true;
 
     if (g_pCompositor->m_sWLRSession) {