profile.d: enable compatibility of XDG_RUNTIME_DIR to systemd

Signed-off-by: Icenowy Zheng <[email protected]>

Author: Icenowy

profile.d/40-desktopenvironments

@@ -3,10 +3,15 @@
 [ -f /etc/locale.conf ] && . /etc/locale.conf
 export LANG
 if test -z "${XDG_RUNTIME_DIR}"; then
-    export XDG_RUNTIME_DIR=/tmp/${UID}-runtime-dir
-    if ! test -d "${XDG_RUNTIME_DIR}"; then
-        mkdir "${XDG_RUNTIME_DIR}"
-        chmod 0700 "${XDG_RUNTIME_DIR}"
+    if test -d "/run/user/${UID}"; then
+        # Systemd uses this as XDG_RUNTIME_DIR
+        export XDG_RUNTIME_DIR=/run/user/${UID}
+    else
+        export XDG_RUNTIME_DIR=/tmp/${UID}-runtime-dir
+        if ! test -d "${XDG_RUNTIME_DIR}"; then
+            mkdir "${XDG_RUNTIME_DIR}"
+            chmod 0700 "${XDG_RUNTIME_DIR}"
+        fi
     fi
 fi