hp-setup can't find printer connected with USB

I'm having trouble with my HP LaserJet P1102 on an Arch Linux 4.19.2 system. lsusb shows that the printer is connected: Bus 002 Device 005: ID 03f0:002a HP, Inc LaserJet P1102 In journalctl, I see these messages when plugging in the printer via USB: kernel: usb 2-1.1: new high-speed USB device number 7 using ehci-pci kernel: usb 2-1.1: New USB device found, idVendor=03f0, idProduct=002a, bcdDevice= 1.00 kernel: usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 kernel: usb 2-1.1: Product: HP LaserJet Professional P1102 kernel: usb 2-1.1: Manufacturer: Hewlett-Packard kernel: usb 2-1.1: SerialNumber: 000000000Q80X0EGSI1c kernel: usb-storage 2-1.1:1.0: USB Mass Storage device detected kernel: scsi host6: usb-storage 2-1.1:1.0 mtp-probe: checking bus 2, device 7: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1" mtp-probe: bus: 2, device: 7 was not an MTP device mtp-probe: checking bus 2, device 7: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1" mtp-probe: bus: 2, device: 7 was not an MTP device But when running sudo hp-setup -i and selecting 0 to check for USB-connected printers I get: Using connection type: usb error: No device selected/specified or that supports this functionality. Output of systemctl status org.cups.cupsd.service: ● org.cups.cupsd.service - CUPS Scheduler Loaded: loaded (/usr/lib/systemd/system/org.cups.cupsd.service; enabled; vendor preset: disabled) Active: active (running) since Fri 2018-11-23 13:03:23 CET; 25min ago Docs: man:cupsd(8) Main PID: 6271 (cupsd) Status: "Scheduler is running..." Tasks: 1 (limit: 4915) Memory: 7.5M CGroup: /system.slice/org.cups.cupsd.service └─6271 /usr/bin/cupsd -l sudo hp-check crashes: HP Linux Imaging and Printing System (ver. 3.18.6) Dependency/Version Check Utility ver. 15.1 Copyright (c) 2001-15 HP Development Company, LP This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to distribute it under certain conditions. See COPYING file for more details. Note: hp-check can be run in three modes: 1. Compile-time check mode (-c or --compile): Use this mode before compiling the HPLIP supplied tarball (.tar.gz or .run) to determine if the proper dependencies are installed to successfully compile HPLIP. 2. Run-time check mode (-r or --run): Use this mode to determine if a distro supplied package (.deb, .rpm, etc) or an already built HPLIP supplied tarball has the proper dependencies installed to successfully run. 3. Both compile- and run-time check mode (-b or --both) (Default): This mode will check both of the above cases (both compile- and run-time dependencies). Check types: a. EXTERNALDEP - External Dependencies b. GENERALDEP - General Dependencies (required both at compile and run time) c. COMPILEDEP - Compile time Dependencies d. [All are run-time checks] PYEXT SCANCONF QUEUES PERMISSION Status Types: OK MISSING - Missing Dependency or Permission or Plug-in INCOMPAT - Incompatible dependency-version or Plugin-version -Traceback (most recent call last): File "/usr/share/hplip/base/utils.py", line 266, in walkFiles names = os.listdir(root) FileNotFoundError: [Errno 2] No such file or directory: '/etc/PolicyKit' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/share/hplip/base/utils.py", line 268, in walkFiles raise StopIteration StopIteration The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/usr/bin/hp-check", line 861, in dep.core.init() File "/usr/share/hplip/installer/core_install.py", line 500, in init self.check_dependencies(callback) File "/usr/share/hplip/installer/core_install.py", line 593, in check_dependencies self.have_dependencies[d] = self.dependencies[d]() File "/usr/share/hplip/installer/core_install.py", line 1164, in check_policykit if check_file('PolicyKit.conf', "/etc/PolicyKit") and check_file('org.gnome.PolicyKit.AuthorizationManager.service', "/usr/share/dbus-1/services"): File "/usr/share/hplip/installer/dcheck.py", line 108, in check_file for w in utils.walkFiles(dir, recurse=True, abs_paths=True, return_folders=False, pattern=f): RuntimeError: generator raised StopIteration All packages are updated to their latest version, meaning sudo pacman -Syu says "there is nothing to do". I've got Python 3.7.1 installed via pacman. Is this a bug in HP's software? An incompatibility introduced with a newer Python version?