I'm trying to install HP laserjet MFP M140we.
Already downloaded hplip-3.23.5.run and runned.
Some dependencies were missing, i installed some, but dunno how to with the last i need.
ISSING 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
sane-devel scan REQUIRED
libavahi-dev scan REQUIRED
dbus fax REQUIRED
python3-pyqt4-dbus gui_qt4 OPTIONAL
python3-pyqt4 gui_qt4 REQUIRED
python3-pyqt5-dbus gui_qt5 OPTIONAL
python3-pyqt5 gui_qt5 REQUIRED
python3-devel base REQUIRED
Do you want to install these missing dependencies (y=yes*, n=no, q=quit) ? y


INSTALL MISSING REQUIRED DEPENDENCIES
-------------------------------------
note: Installation of dependencies requires an active internet connection.
warning: Missing REQUIRED dependency: python3-devel (Python devel - Python development files)
warning: Missing REQUIRED dependency: python3-pyqt4 (PyQt 4- Qt interface for Python (for Qt version 4.x))
warning: This installer cannot install 'python3-pyqt4' for your distro/OS and/or version.
error: Installation cannot continue without this dependency. Please manually install this dependency and re-run this installer.
root@:~# sudo apt-get install python3-devel.x86_64
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package python3-devel.x86_64
E: Couldn't find any package by glob 'python3-devel.x86_64'
E: Couldn't find any package by regex 'python3-devel.x86_64'
root@:~# apt install python3-pyqt5
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
python3-pyqt5 is already the newest version (5.15.6+dfsg-1ubuntu3).
The following packages were automatically installed and are no longer required:
netfilter-persistent python3-dbus.mainloop.pyqt5 python3-notify2
Use 'apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
I really need to resolve. Any help?

Read these:
https://www.linuxquestions.org/questions/faq.php?faq=welcome
http://www.catb.org/~esr/faqs/smart-questions.html#bespecific

Specifically:
Then use the edit functionality on your post to both correct the title, and to use "[code]..[/code]" tags to preserve formatting and readability.

you don't need to add x86_64, so try:
otherwise see post #2

A further problem is that this version of hplip absolutely requires an older version of python3-pyqt than the one on your system. You don't say which distro in the Debian family you are using, but I believe that Debian and its derivatives do have a version of hplip in their repos which should be more compatible with your system, and apt will ensure that its dependencies are met too. Did you get this installation script directly from the HP site?

It is possible to downgrade a package using apt (see for example https://askubuntu.com/questions/1382...ge-via-apt-get) but it is tricky and I certainly wouldn't recommend it for a newbie.

Hello. and thanks.
root@ILove80:/# sudo apt-get install python3-devel.x86_64
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package python3-devel.x86_64
E: Couldn't find any package by glob 'python3-devel.x86_64'
E: Couldn't find any package by regex 'python3-devel.x86_64'
root@ILove80:/# apt-get install python3-devel
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package python3-devel
root@ILove80:/#

HELLO, i'm using the last Mint version.Yes, HP. redirected to another site, then i downloaded.
To downgrade, i need to know what version is neede ;(
sudo apt-get -t=<target release> install <package-name>

is the command to be run. This can be used to down-grade a package to a specific version.

Missing
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
sane-devel scan REQUIRED
python3-pyqt4-dbus gui_qt4 OPTIONAL
python3-pyqt4 gui_qt4 REQUIRED
python3-pyqt5-dbus gui_qt5 OPTIONAL
python3-pyqt5 gui_qt5 REQUIRED

Well, there you are then! It absolutely requires python3-pyqt4. And you have python3-pyqt5.

python3-pyqt5 gui_qt5 is also REQUIRED

And? did you [try to] install them?