Install Qt Creator.

It’s quite the bother to get this thing installed on De(bi/vu)an. You’d think installing the base package would leave you with a functioning installation and a populated examples page (it being the page that appears on first run, you’d think the packagers would ensure that installing the base package would do it) — but no.

One problem is, Creator looks for the examples once and only once. Install them after that and they won’t appear unless you delete the configuration folder (or at least the applicable setting, but I have yet to triage what that might be).

On the other hand, installing all the examples first and then installing Qt Creator also doesn’t work: some critical infrastructure is still missing.

My present solution: install 1) the examples; 2) Qt Creator; 3) all the doc-html files, which is certainly not enough in itself and may be voodoo, and then (still before starting for the first time) from the Not installed status screen in Synaptic, 4) everything whose name starts with qt or qml and has an appropriate version number (at this writing, 5.15.x).

And then you discover that the packager leaves /usr/bin full of qt-related links that all point to qtchooser, which of course makes qtcreator go “Huh?!” so you have to fix all those.

After doing all that it seems to work…well, except for the apparent necessity of running with a stylesheet…