fix plasma-workspace missing QT_PLUGIN_PATH not set for Qt4 applications. Reference: https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1337422.html

plasma-workspace/10-kf5

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-if [[ "$DESKTOP_SESSION" == "plasma" ]]; then
-        export QTDIR="/usr/lib/qt5"
-        export PATH="usr/bin:$QTDIR/bin:$PATH"
-	export QT_PLUGIN_PATH="/usr/lib/kf5/plugins:/usr/lib/qt5/plugins"
-	export QT_INCLUDE_PATH="/usr/include/qt5"
-	export QML2_IMPORT_PATH="/usr/lib/qml:/usr/lib/qt5/qml"
-	export QML_IMPORT_PATH="$QML2_IMPORT_PATH"
-	export KDE_SESSION_VERSION=5
-	export KDE_FULL_SESSION=true
-fi
-

plasma-workspace/PKGBUILD

@@ -4,7 +4,7 @@ source ../plasma.conf
 pkgbase=plasma-workspace
 pkgname=('plasma-workspace' 'drkonqi')
 pkgver=${PVersion}
-pkgrel=1
+pkgrel=2
 pkgdesc='KDE Plasma Workspace'
 arch=('x86_64')
 url='https://projects.kde.org/projects/kde/workspace/plasma-workspace'
@@ -17,9 +17,11 @@ makedepends=('extra-cmake-modules' 'kdoctools' 'kwin' 'gpsd' 'baloo-kf5' 'krunne
 groups=('plasma')
 options=("debug")
 source=("${PServer}/${pkgver}/${pkgname}-${PSubVersion}.tar.xz"
-        'kde.pam')
+        kde.pam
+        qt4pluginpath.sh)
 sha256sums=( $(getSum ${pkgname} | head -n1)             
-            '44a7c7acee30547dd41d0a593486b29df4eaa5c3707287b87e23b1104de3964a')
+            '44a7c7acee30547dd41d0a593486b29df4eaa5c3707287b87e23b1104de3964a'
+            '498aef1b2e5573d82634e9a359c5cdcc6c8b41e803aa648e02ee02cde11b53fd')
 
 prepare() {
   mkdir -p build
@@ -44,6 +46,10 @@ package_plasma-workspace() {
 
   install -D "${srcdir}"/kde.pam \
     "${pkgdir}"/etc/pam.d/kde
+  
+  # enable QT4 style integration in KDE4 apps
+  install -D "${srcdir}"/qt4pluginpath.sh \
+    "${pkgdir}"/etc/profile.d/qt4pluginpath.sh
 
   # Remove conflicts with drkonqi
   rm "${pkgdir}"/usr/lib/drkonqi