From cd5a2def9a90090b241757b6dce341d69c5db66d Mon Sep 17 00:00:00 2001
From: Carter Li <zhangsongcui@live.cn>
Date: Sun, 13 Sep 2026 17:33:15 +0800
Subject: [PATCH] DE (Linux): uses `COSMIC_VERSION` if available

https://github.com/pop-os/cosmic-comp/issues/2425#issuecomment-5652401962
---
 src/detection/de/de_linux.c                 | 8 +++++++-
 src/detection/displayserver/displayserver.h | 1 +
 src/detection/displayserver/linux/wmde.c    | 4 ++++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/detection/de/de_linux.c b/src/detection/de/de_linux.c
index 719d81fe8..c6cebbae5 100644
--- a/src/detection/de/de_linux.c
+++ b/src/detection/de/de_linux.c
@@ -184,6 +184,12 @@ static const char* getTrinity(FFstrbuf* result, [[maybe_unused]] FFDEOptions* op
 }
 
 static const char* getCosmic(FFstrbuf* result, [[maybe_unused]] FFDEOptions* options) {
+    const char* env = getenv("COSMIC_VERSION");
+    if (env) {
+        ffStrbufSetS(result, env);
+        return nullptr;
+    }
+
     if (ffProcessAppendStdOut(result, (char* const[]) { "cosmic-comp", "--version", nullptr }) == nullptr) {
         // cosmic-comp 0.1.0 (git commit fa88002ba41d2edec25dd7ffdee9719fbb928fc0)
         ffStrbufSubstrAfterFirstC(result, ' ');
@@ -256,7 +262,7 @@ const char* ffDetectDEVersion(const FFstrbuf* deName, FFstrbuf* result, FFDEOpti
         getUnity(result, options);
     } else if (ffStrbufEqualS(deName, "trinity")) {
         getTrinity(result, options);
-    } else if (ffStrbufEqualS(deName, "COSMIC")) {
+    } else if (ffStrbufEqualS(deName, FF_DE_PRETTY_COSMIC)) {
         getCosmic(result, options);
     } else if (ffStrbufEqualS(deName, FF_DE_PRETTY_ENLIGHTENMENT)) {
         getEnlightenment(result, options);
diff --git a/src/detection/displayserver/displayserver.h b/src/detection/displayserver/displayserver.h
index 715a2de43..5ce08c386 100644
--- a/src/detection/displayserver/displayserver.h
+++ b/src/detection/displayserver/displayserver.h
@@ -17,6 +17,7 @@
 #define FF_DE_PRETTY_UKUI "UKUI"
 #define FF_DE_PRETTY_NEBIDE "NebiDE"
 #define FF_DE_PRETTY_ENLIGHTENMENT "Enlightenment"
+#define FF_DE_PRETTY_COSMIC "COSMIC"
 
 #define FF_WM_PRETTY_KWIN "KWin"
 #define FF_WM_PRETTY_MUTTER "Mutter"
diff --git a/src/detection/displayserver/linux/wmde.c b/src/detection/displayserver/linux/wmde.c
index 984bdbeda..ed994fc7f 100644
--- a/src/detection/displayserver/linux/wmde.c
+++ b/src/detection/displayserver/linux/wmde.c
@@ -75,6 +75,10 @@ static const char* parseEnv(void) {
         return "Sway";
     }
 
+    if (getenv("COSMIC_VERSION") != nullptr) {
+        return "COSMIC";
+    }
+
 #if __linux__ && !__ANDROID__
     if (
         getenv("WAYLAND_DISPLAY") != nullptr &&