hplip: Fixes runtime errors

The following errors are fixed:
- pyqt4 not found
- hpasio for sane not found

pkgs/misc/drivers/hplip/default.nix

@@ -78,12 +78,12 @@ pythonPackages.buildPythonApplication {
   prePatch = ''
     # HPLIP hardcodes absolute paths everywhere. Nuke from orbit.
     find . -type f -exec sed -i \
-      -e s,/etc/hp,$out/etc/hp, \
-      -e s,/etc/sane.d,$out/etc/sane.d, \
-      -e s,/usr/include/libusb-1.0,${libusb1.dev}/include/libusb-1.0, \
-      -e s,/usr/share/hal/fdi/preprobe/10osvendor,$out/share/hal/fdi/preprobe/10osvendor, \
-      -e s,/usr/lib/systemd/system,$out/lib/systemd/system, \
-      -e s,/var/lib/hp,$out/var/lib/hp, \
+      -e s,/etc/hp,$out/etc/hp,g \
+      -e s,/etc/sane.d,$out/etc/sane.d,g \
+      -e s,/usr/include/libusb-1.0,${libusb1.dev}/include/libusb-1.0,g \
+      -e s,/usr/share/hal/fdi/preprobe/10osvendor,$out/share/hal/fdi/preprobe/10osvendor,g \
+      -e s,/usr/lib/systemd/system,$out/lib/systemd/system,g \
+      -e s,/var/lib/hp,$out/var/lib/hp,g \
       {} +
   '';
 
@@ -96,6 +96,8 @@ pythonPackages.buildPythonApplication {
       --with-systraydir=$out/xdg/autostart
       --with-mimedir=$out/etc/cups
       --enable-policykit
+      --disable-qt4
+      ${stdenv.lib.optionals withQt5 "--enable-qt5"}
     "
 
     export makeFlags="
@@ -140,9 +142,6 @@ pythonPackages.buildPythonApplication {
     mkdir -p $out/var/lib/hp
     cp ${hplipState} $out/var/lib/hp/hplip.state
 
-    mkdir -p $out/etc/sane.d/dll.d
-    mv $out/etc/sane.d/dll.conf $out/etc/sane.d/dll.d/hpaio.conf
-
     rm $out/etc/udev/rules.d/56-hpmud.rules
   '';