feat: set COSMIC_VERSION env var

Cargo.lock

@@ -300,7 +300,7 @@ dependencies = [
 
 [[package]]
 name = "cosmic-session"
-version = "1.0.0"
+version = "1.8.0"
 dependencies = [
  "color-eyre",
  "cosmic-dbus-a11y",

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "cosmic-session"
 description = "The session manager for the COSMIC desktop environment"
-version = "1.0.0"
+version = "1.8.0"
 license = "GPL-3.0-only"
 edition = "2024"
 rust-version = "1.93"

src/main.rs

@@ -166,6 +166,13 @@ async fn start(
 	env_vars.push(("XDG_SESSION_TYPE".to_string(), "wayland".to_string()));
 	systemd::set_systemd_environment("XDG_SESSION_TYPE", "wayland").await;
 
+	// expose the session version
+	env_vars.push((
+		"COSMIC_VERSION".to_string(),
+		env!("CARGO_PKG_VERSION").to_string(),
+	));
+	systemd::set_systemd_environment("COSMIC_VERSION", env!("CARGO_PKG_VERSION")).await;
+
 	#[cfg(feature = "systemd")]
 	let _inhibit_fd = if *is_systemd_used() {
 		match get_systemd_env().await {