+# Get all Qt5 plugins (won't be copied automatically).
+QT5PLUGINS=/usr/lib/$ARCH-linux-gnu/qt5/plugins # Host (+ AppRun) path.
+mkdir -p .$QT5PLUGINS
+cp -r $QT5PLUGINS/accessible .$QT5PLUGINS
+cp -r $QT5PLUGINS/generic .$QT5PLUGINS
+cp -r $QT5PLUGINS/iconengines .$QT5PLUGINS
+cp -r $QT5PLUGINS/imageformats .$QT5PLUGINS
+cp -r $QT5PLUGINS/platforminputcontexts .$QT5PLUGINS
+cp -r $QT5PLUGINS/platforms .$QT5PLUGINS
+
+# Get some additional dependencies of the Qt5 plugins.
+ldd .$QT5PLUGINS/platforms/libqxcb.so | grep "=>" | awk '{print $3}' | xargs -I '{}' cp -v '{}' ./usr/lib || true
+ldd .$QT5PLUGINS/imageformats/libqsvg.so | grep "=>" | awk '{print $3}' | xargs -I '{}' cp -v '{}' ./usr/lib || true
+
+# Python 3
+cp /usr/lib/$ARCH-linux-gnu/libpython$PYVER* ./usr/lib
+mkdir -p ./usr/share/pyshared
+cp -r /usr/lib/python$PYVER/* ./usr/share/pyshared # AppRun expects this path.
+
+cp -r ./usr/share/pyshared/plat-$ARCH-linux-gnu/* ./usr/share/pyshared
+