I cannot install HPLIP on any flavor of Ubuntu 20.04

Binary `hplip-3.20.3.run` is not installable on Ubuntu 20.04 LTS (focal):

```
$ sh hplip-3.20.3.run
...
error: ubuntu-20.04 version is not supported, so all dependencies may not be installed. However trying to install using ubuntu-19.10 version packages.

...
MISSING DEPENDENCIES
--------------------
Following dependencies are not installed. HPLIP will not work if all REQUIRED dependencies are not installed and some of the HPLIP features will not work if OPTIONAL dependencies are not installed.
Package-Name Component Required/Optional
libjpeg base REQUIRED
libtool base REQUIRED
cups-devel base REQUIRED
cups-image base REQUIRED
libusb base REQUIRED
sane-devel scan REQUIRED
xsane scan OPTIONAL
dbus fax REQUIRED
libnetsnmp-devel network REQUIRED
libcrypto network REQUIRED
python3-notify2 gui_qt4 OPTIONAL
python3-pyqt4-dbus gui_qt4 OPTIONAL <--- critical
python3-pyqt4 gui_qt4 REQUIRED <--- critical
python3-devel base REQUIRED

...

INSTALL MISSING OPTIONAL DEPENDENCIES
-------------------------------------
note: Installation of dependencies requires an active internet connection.
warning: Missing OPTIONAL dependency for option 'gui_qt4': python3-notify2 (Python libnotify - Python bindings for the libnotify Desktop notifications)
warning: Missing OPTIONAL dependency for option 'gui_qt4': python3-pyqt4-dbus (PyQt 4 DBus - DBus Support for PyQt4)
warning: Missing OPTIONAL dependency for option 'scan': xsane (xsane - Graphical scanner frontend for SANE)
...
Please wait, this may take several minutes...
error: Command failed. Re-try #1...
Running 'sudo apt-get install --assume-yes python3-pyqt4'
Please wait, this may take several minutes...
error: Command failed. Re-try #2...
Running 'sudo apt-get install --assume-yes python3-pyqt4'
Please wait, this may take several minutes...
error: Command failed. Re-try #3...
Running 'sudo apt-get install --assume-yes python3-pyqt4'
Please wait, this may take several minutes...
error: Package install command failed with error code 100
note: Some packages may not get installed on python3 due to distro incompatibilites
...

```

But the official repository has hplip-gui 3.20.3+dfsg0-2 (see https://packages.ubuntu.com/focal/hplip-gui ) build against python3-pyqt5 -
so possible workaround is to use packaged version of HPLIP with:

```
sudo add-apt-repository universe
sudo apt-get install hplip-gui
```

and then add printer using `hp-setup` and/or `hp-plugin` (see https://developers.hp.com/hp-linux-imaging-and-printing/supported_devices/index for compatibilty check).

By the way HPLIP team should include support of Ubuntu 20.04 LTS (!!!) in next binary releases of HPLIP!

Hi

HPLIP still doesn't support Ubuntu 20.04, it will be there in the upcoming releases I think, but you can check for available version from Ubuntu website

I had the same problem, it works now with hplip-gui

It does not work for me.

I tried several options I read online. Installing hplip-gui does not help me; manually compiling and using flags to the configure script to enable pyqt5 and disable pyqt4 did not work. This was for code I downloaded from the hplip website, to version 3.20.6.

This is for an OfficeJet Pro 8625

Just my 2 cents.

I upgraded from Kubuntu 18.04.5 to 20.04.1 end of september. The problem still persists and according to the release notes (https://developers.hp.com/hp-linux-imaging-and-printing/release_notes), after half a year no flavor of Ubuntu 20.04 is being supported by any release of hplip.

Hello,

I managed to install hplip 3.20.11 on ubuntu 20.04.1 by following these steps:
- uninstall all previously installed hplip versions
- set python3 to be the default python (I did this with "sudo apt install python-is-python3" but you probably can do it manually if you prefer)
- run the hplip-3.20.11.run as specified on hp's website
- configure the printer in interactive mode (rather than GUI)

HTH

Até que fim uma luz no fim do túnel! #6 de spaaam funcionou para mim!
Muito obrigado mesmo!