Using a previous version of Qt

[Thibaut]

Hi!

I am currently using Qt 6.1.0 with Qt Creator, but I need to use Qt 5.15.2 for a project.
I can't find a way to add this version to the kits of Qt Creator. In fact, I can't find where to download it to start with.

If I use the online installer, it won't let me do anything as Qt is already installed.

Is there any way to just add a previous version of Qt without using the online installer?
If so, how can I get this version?

[d_stranz]

I need to use Qt 5.15.2 for a project.
I can't find a way to add this version to the kits of Qt Creator. In fact, I can't find where to download it to start with.
If so, how can I get this version?

Older versions here. (https://download.qt.io/archive/qt/) It looks like you will have to build it from source. I have several Qt versions installed on my system and in Qt Creator. They just need to live in separate directories. I have them all under a "Qt" top-level directory, with separate directories for various versions from 5.4.0 through 5.14.2. Once you have done that, you just set them up as separate kits in Qt Creator.

The Qt Company is turning into Microsoft and they are going to make it difficult to get anything except the newest version. It is particularly bad if you are a commercial customer - you are forced into their lifetime fee payment handcuffs which require you to pay for a Qt license for as long as you sell your product, whether you are continuing to develop it or not.