HP-printer: You do not need CUPS?

You simply can do this :

sudo pacman -S hplip

and then :

sudo hpsetup

or :

sudo hp-setup

You do not need cups for hp-printers.

not true - hplip depends on cups

 $ pamac info hplip
Name                  : hplip
Version               : 1:3.25.8-6
Description           : Drivers for HP DeskJet, OfficeJet,
                        Photosmart, Business Inkjet and some LaserJet
...
Depends On            : python-dbus python-distro ghostscript
                        net-snmp foomatic-db-engine python-gobject
                        libjpeg-turbo dbus libstdc++ libgcc avahi
                        python xdg-utils zlib libcups glibc sh

...
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Configure your printer using hp-setup | HP Developers portal

Using hp-setup is the easiest way to configure your printer. However you may be able to configure your printer using one of the methods below (depending on your distro and/or configuration).

  1. Configure your printer using CUPS
  2. Configure your printer using YaST (SUSE Only)

Note: You will need to be root to configure your printer.

su
hp-setup

or if sudo:

sudo hp-setup
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Is there an actual question here or you just wanted to share this (which is wrong)?

Interrobang - Wikipedia
A sentence ending with an interrobang states a question in an excited manner, expresses excitement, disbelief, or confusion in the form of a question, or asks a rhetorical question

Normally, I might agree.

However, in this instance their submission needed an obvious correction, so we can allow it for the sake of accurate information, I think.

Let’s leave it listed; irrespective of the interrobang.

Correct me if I’m wrong, but it only depends on the libcups CUPS libraries not CUPS itself.

And this seems to state hp-setup is independent of CUPS as it lists CUPS as an alternative to hp-setup by the use of “However”.

The comment from @nikgnomic is sufficiently accurate to convey the information stated.

2nd quotation edited to show correct attribution

Topic title edited to simplify punctuation to avoid further controversy and possible censorship

hplip also includes hp-toolbox to manage HP printers
Manjaro Wiki - Managing Printers with HP Device Manager

Some HP printers also require hplip-plugin AUR

What is the HPLIP Binary Plug-In and How Do I Install It? | HP Developer Portal
Some HP printers require proprietary software technologies to allow full access to printer features and performance. Unfortunately, these technologies cannot be open sourced, but to resolve this HP uses a binary plug-in for these printers.