hplip plugin not working

I tried running hp-setup with sudo and still received this error after agreeing to the license during installing the plugin:

error: The device you are trying to setup requires a binary plug-in. Some functionalities may not work as expected without plug-ins. Please run 'hp-plugin' as normal user to install plug-ins. Visit http://hplipopensource.com for more infomation.

I ran the hp-plugin as my user as instructed, but the plugin says it installs and dumps me back at the same error. I tried running hp-setup after su'ing and I get the same results.

Ok, I install the base-devel packages and copied the raw PKGBUILD script into Kate and saved it the folder ~/dev/build/hplip - I commented out lines 20, 21, 23, 24:

pkgna
me=hplip
pkgver=3.18.6
# incase a or b is used in hplip rls:
_pkgver=3.18.6
pkgrel=2
pkgdesc="Drivers for HP DeskJet, OfficeJet, Photosmart, Business Inkjet and some LaserJet."
arch=('x86_64')
url="https://developers.hp.com/hp-linux-imaging-and-printing"
license=('GPL')
depends=('ghostscript' 'foomatic-db' 'foomatic-db-engine' 'cups'
         'net-snmp' 'libusb' 'wget' 'python3-gobject3' 'pyqt5-python3')
makedepends=('pkgconfig' 'sane' 'rpcbind' 'dbus-python3')
optdepends=('dbus-python3: for dbus support'
            'sane: for scanner support'
            'rpcbind: for network support')
options=('!libtool')
install=${pkgname}.install
source=("https://downloads.sourceforge.net/hplip/${pkgname}-${_pkgver}.tar.gz"
#        "https://launchpadlibrarian.net/281975878/patch"
#        'cups-2.2.patch')
md5sums=('3857eae76c49c00fa185628d4dce7d61'
#         'c873eb40c9e3fa794637523400190218'
#         'ceb7449b12e2ecf70f898bc50b161a3c')

build() {
  cd ${pkgname}-${_pkgver}
  find . -type f -exec sed -i 's~^#.*env python~#!/usr/bin/env python3~' {} +
  sed -i '1s|#!/usr/bin/python|#!/usr/bin/python3|' doctor.py setup.py makeuri.py logcapture.py base/magic.py
  sed -i '1s|#!/usr/bin/python|#!/usr/bin/python3|' ui/upgradeform.py uninstall.py upgrade.py config_usb_printer.py
  sed -i 's|python ./print.py|python3 ./print.py|' scan.py
  sed -i 's|python ./testpage.py|python3 ./testpage.py|' setup.py
  sed -i 's|python %HOME%|python3 %HOME%|' base/utils.py
  sed -i 's|python ./plugin.py|python3 ./plugin.py|' base/pkit.py
  sed -i 's|/usr/bin/python|/usr/bin/python3|' data/rules/hplip-printer@.service
  # https://github.com/KaOSx/main/issues/31, patch file prnt/filters/hpps
  #patch -p2 -i ${srcdir}/patch
  # cups 2.2 patch https://packages.debian.org/sid/hplip
  #patch -p1 -i ${srcdir}/cups-2.2.patch

  export AUTOMAKE='automake --foreign'
  export PYTHON=/usr/bin/python3
  autoreconf --force --install

	./configure --prefix=/usr \
             --disable-qt4 \
             --enable-qt5 \
             --enable-hpcups-install \
             --enable-new-hpcups \
             --enable-cups-ppd-install \
             --enable-cups-drv-install \
             --enable-pp-build 
  make 
}

package() {
  cd ${pkgname}-${_pkgver}

  make rulesdir=/usr/lib/udev/rules.d DESTDIR=${pkgdir}/ install

  # remove sane conflicts and obsolete files
  rm -rf ${pkgdir}/etc/{sane.d,xdg}
  rm -vrf ${pkgdir}/usr/share/hal
  rm -vrf $pkgdir/etc/init.d
}

Then I ran makepkg -si and this is the output I get:

    ~  dev  build  hplip  makepkg -si
/home/ezsit/dev/build/hplip/PKGBUILD: line 22: syntax error near unexpected token `('
/home/ezsit/dev/build/hplip/PKGBUILD: line 22: `md5sums=('3857eae76c49c00fa185628d4dce7d61''
==> ERROR: install file (hplip.install) does not exist or is not a regular file.
 Any idea what I might be doing wrong?

Thank you for the reply. I will have some time to test tonight. Hope your New Year's was happy and safe. :-)

I was able to use the PKGBUILD and hplip.install to get the source package. I extracted it and ran the commands from HP's site to manually compile and install the software. It appears to have installed, but is now complaining that PyQt4.QtGui is not available (no module named). ?? I thought KaOS does not have any Qt4 stuff left. Is this the case?

I am sorry if the instructions in the packaging guide are not easy for me to follow. I read through the packaging guide section on building a package and I cannot make heads or tails of what to do in the hplip case. If the steps were simple I could probably get it, but being my first time doing this, none of this is familiar. Thank you for your patience.

OK, I finally think I get it. Thank you. The package you linked to works. I did not realize that the PKGBUILD produced a ready to use package by pacman. I was getting confused by the depends= , the pkgver= , the makepkg -g , and the checksums instructions. I did not know those steps were unnecessary and to just go to pacman -U. Sorry again for my ignorance.