I'd like to install libqt5qmlmodels5 from packages.ubuntu.com.
The library exists in [universe] for [groovy] [hirsute] [impish].
I'm on Ubuntu 20.04.2 LTS [focal], so apt install doesn't work.
Can I still install the library?
I looked at "Download Source Package", and there are many things there.
Do I copy and paste the files found in the fileslist (where do I get those files from)?
What's the conincal way to install this library being on focal?
Manually installing an Ubuntu package from an older release may or may not work, and is, in any case, not supported. Sometimes, an older package installs without any issue, but more frequently, there are conflicts with the required dependencies not matching these present or available in the newer Ubuntu version.
You can take over and manually try to fix dependencies yourself, but only take over package management if you have extremely good technical linux skills. However, if you are of that caliber, a far better approach is grabbing source code and compiling yourself.
