How can I keep two installations in sync?

[Roger Bell_West]

On Thu, Sep 28, 2017 at 04:18:58PM +0100, Lorenzo Martinelli wrote:
>Is there a simple way to override GIP's default cache directory? If that were
>possible, I could point both installations to the same NAS folder and be done
>with.
>
>--profile-dir <dir> does not seem to work in the options file (unless I am
>doing something wrong)

Looking at the source code, I guess --profiledir, or set the
environment variable GETIPLAYERUSERPREFS.