diff --git a/pkgs/development/libraries/kde-frameworks-5.15/make-kde-wrapper.sh b/pkgs/development/libraries/kde-frameworks-5.15/make-kde-wrapper.sh
index 83ffcc93935..9996e3cae71 100644
--- a/pkgs/development/libraries/kde-frameworks-5.15/make-kde-wrapper.sh
+++ b/pkgs/development/libraries/kde-frameworks-5.15/make-kde-wrapper.sh
@@ -1,15 +1,23 @@
 makeKDEWrapper() {
-    KSERVICE_BUILD_KDESYCOCA=${KDESYCOCA:+1}
     local old="$1"
     local new="$2"
     shift
     shift
-    makeQtWrapper "$old" "$new" ${KDESYCOCA:+--set KDESYCOCA "$KDESYCOCA"} "$@"
+    if [[ -z "$KDE_WRAPPER_IMPURE" ]]; then
+        KSERVICE_BUILD_KDESYCOCA=${KDESYCOCA:+1}
+        makeQtWrapper "$old" "$new" ${KDESYCOCA:+--set KDESYCOCA "$KDESYCOCA"} "$@"
+    else
+        makeQtWrapper "$old" "$new" "$@"
+    fi
 }
 
 wrapKDEProgram() {
-    KSERVICE_BUILD_KDESYCOCA=${KDESYCOCA:+1}
     local prog="$1"
     shift
-    wrapQtProgram "$prog" ${KDESYCOCA:+--set KDESYCOCA "$KDESYCOCA"} "$@"
+    if [[ -z "$KDE_WRAPPER_IMPURE" ]]; then
+        KSERVICE_BUILD_KDESYCOCA=${KDESYCOCA:+1}
+        wrapQtProgram "$prog" ${KDESYCOCA:+--set KDESYCOCA "$KDESYCOCA"} "$@"
+    else
+        wrapQtProgram "$prog" "$@"
+    fi
 }