I'm using pbuilder with an enhanced config and not pbuilder-dist but the steps should be basically the same:

1. Add your extra sources to the OTHERMIRROR variable in your ~/.pbuilderrc:

   
   
   

   OTHERMIRROR="deb http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu raring main|deb http://ppa.launchpad.net/tkluck/gnome3/ubuntu raring main"
   
   




2. Chroot into your pbuilder environment to add the repository keys (or alternatively create a local keyring with those two keys and add it to APTKEYSTRINGS variable or add your local /etc/apt/trusted.gpg keyring):

   
   
   

   pbuilder-dist raring login --save-after-login
   
   apt-key adv --keyserver pgp.mit.edu --recv-keys 3B1510FD 568F2AD3
   
   exit
   
   

   
   
   

   (Of course you can extend your sources.list directly and skip step 1 and 3 but an pbuilder-dist update will reset the sources.list.)




3. Update your pbuilder environment (with plain pbuilder you have to add --override-config):

   
   
   

   pbuilder-dist raring update --release-only
   
   

   
   
   

   Note: Since raring a development release has the proposed sources enabled as default. This is done by passing the proposed sources to pbuilder's --othermirror command line option - which overwrites the config file value. So you have to use the --release-only switch.




4. Build your package:

   
   
   

   pbuilder-dist raring build YOURPACKAGE.dsc