diff --git a/pkgs/development/libraries/kde-frameworks/kconfigwidgets/default.nix b/pkgs/development/libraries/kde-frameworks/kconfigwidgets/default.nix
index 3943e5d6d494..e06d9547de07 100644
--- a/pkgs/development/libraries/kde-frameworks/kconfigwidgets/default.nix
+++ b/pkgs/development/libraries/kde-frameworks/kconfigwidgets/default.nix
@@ -11,10 +11,5 @@ mkDerivation {
   propagatedBuildInputs = [ kauth kcodecs kconfig kwidgetsaddons ];
   patches = [ ./0001-qdiriterator-follow-symlinks.patch ];
   outputs = [ "out" "dev" ];
-  preConfigure = ''
-    outputBin=dev
-  '';
-  postInstall = ''
-    moveToOutput share/man $dev
-  '';
+  outputBin = "dev";
 }
diff --git a/pkgs/development/libraries/qt-5/hooks/wrap-qt-apps-hook.sh b/pkgs/development/libraries/qt-5/hooks/wrap-qt-apps-hook.sh
index 83f62e4ec2b8..e7d7d1326174 100644
--- a/pkgs/development/libraries/qt-5/hooks/wrap-qt-apps-hook.sh
+++ b/pkgs/development/libraries/qt-5/hooks/wrap-qt-apps-hook.sh
@@ -64,10 +64,6 @@ qtOwnPathsHook() {
 
 preFixupPhases+=" qtOwnPathsHook"
 
-isQtApp () {
-    readelf -d "$1" 2>/dev/null | grep -q -F 'libQt5Core'
-}
-
 # Note: $qtWrapperArgs still gets defined even if $dontWrapQtApps is set.
 wrapQtAppsHook() {
     # skip this hook when requested
@@ -77,7 +73,7 @@ wrapQtAppsHook() {
     [ -z "$wrapQtAppsHookHasRun" ] || return 0
     wrapQtAppsHookHasRun=1
 
-    local targetDirs=( "$prefix/bin" )
+    local targetDirs=( "$prefix/bin" "$prefix/libexec"  )
     echo "wrapping Qt applications in ${targetDirs[@]}"
 
     for targetDir in "${targetDirs[@]}"
@@ -86,7 +82,7 @@ wrapQtAppsHook() {
 
         find "$targetDir" -executable -print0 | while IFS= read -r -d '' file
         do
-            isQtApp "$file" || continue
+            isELF "$file" || continue
 
             if [ -f "$file" ]
             then