apt-preferences: is this right?

[Hugo Vanwoerkom <hvw59601@care2.com>]

Hi all!

Reading man apt_preferences I can *almost* get it, but being a doubter...

As a happy user of Backstreet Ruby, the multi-seat Linux solution, I 
want to avoid that when Debian testing gets X 4.3.0, that its version 
will be installed.
(Unless Debian will have Backstreet Ruby as an option! What an idea...)

Instead I want all X code to come from here:

http://www.schuldei.org/debian/bruby

and I have in my sources list:

deb /http://www.schuldei.org/debian/bruby/ ./

Now it works without an entry in apt preferences because testing isn't 
up to 4.3.0: the output of apt-cache policy:

x-window-system:
Installed: 4.3.0-0pre1v3
Candidate: 4.3.0-0pre1v3
Version Table:
*** 4.3.0-0pre1v3 0
500 /http://www.schuldei.org ./ Packages
100 /var/lib/dpkg/status
4.2.1-12.1 0
500 ftp://ftp.at.debian.org testing/main Packages

But once Debian *does* get 4.3.0, would this entry in the preferences 
file be appropriate?

Package: *
Pin: origin "www.schuldei.org/debian/bruby"
Pin-Priority: 999

Yes?

Thanks!

Hugo.