Setting env var CYGWIN for Cygwin service?

[Franz Fehringer]

Cygwin inherits Windows environment variables, this should be the 
simplest take.

Am 30.12.2020 um 21:09 schrieb Oleksandr Gavenko via Cygwin:
> Hi!
> 
> What way can I pass env var "CYGWIN" to the Cygwin service?
> 
> There are no that many influential options here:
> 
>    https://cygwin.com/cygwin-ug-net/using-cygwinenv.html
> 
> I can think of "winsymlinks:native" or "wincmdln".
> 
> Process Explorer shows following env vars for Cygwin's Exim process:
> 
>    PATH
>    SYSTEMDRIVE
>    SYSTEMROOT
>    WINDIR
> 
> I configured it with "exim-config" and it is in the list of:
> 
>    cygrunsrv -L
> 
> I'm not sure if it is served by cygserver:
> 
>    https://cygwin.com/cygwin-ug-net/using-cygserver.html
>