Embarrassing question re Compiz

[Ken D'Ambrosio]

> Ken D'Ambrosio (ken at jots.org) wrote on Tue May 19 15:27:20 UTC 2020:
> 
> I can state two things definitively:
> * 20.04 *does* have Compiz support
> * 18.04 (and even later -- 19.X) supports Compiz great
> 
> So now, Ken, I need more info - like, how do you know the first of your
> above definitive statements is correct?

OK.  So, I don't remember exactly what happened to make me say that 
Compiz existed for 20.04, but I do remember it didn't work.  (I think I 
tried, maybe, an ill-advised upgrade?)  Anyway, I saw this pop up this 
morning, and decided it was worth checking for sure.  So:

* I downloaded and booted Ubuntu MATE 20.04
* Did:
apt-get install compiz compizconfig-settings-manager compiz-plugin*
(Note the asterisk; "cube" is in one of the plugins -- not sure which, 
but I ain't using Compiz without my Compiz cube.)
* Launched ccsm and did tweaks (e.g., enable cube, wobbly windows)
* Launched compiz ("compiz --replace")
Et voila!  Worked like a charm.  NOTE: I can't remember, nor can I find, 
how to change the default window manager from MATE's Marco to Compiz.  
I'm sure you could just throw "compiz --replace" into "startup 
applications", and have it work fine, though that's kinda kludgey.  If 
anyone knows The Right Way(tm), I'm all ears.

And that's that!

-Ken