Suppressing Wine prefix configuration message window?

[Andrew Eikum]

On Wed, Dec 11, 2019 at 11:02:24AM +0100, Sebastian M. Ernst wrote:
> whenever I use `wine` in a new prefix or intentionally initialize a new
> prefix with `wine wineboot -i`, a configuration message window pops up
> for a few seconds (see attachment: "the configuration of Wine in ... is
> being updated, please wait ..."). I am heavily using Wine in shell
> scripts with new prefixes being generated by those scripts on a regular
> basis. In environments with X, this message window therefore becomes
> sort of annoying. I'd like to "deactivate" it though I have not found a
> simple / clean option. The best bad approach I found in forums is to
> install a virtual X frame-buffer and to point Wine to its DISPAY.
> 
> Is there anything possibly undocumented - an option, a switch or an
> environment variable - that would allow me to do what I want?
> 

You can run Wine with DISPLAY unset. It will complain that it can't
show a window, but the prefix update should still function.

Andrew