pica.conf

This configuration file defines some paths needed by PICA. It's a defaults environment with some definitions. There is one special definition, protecteddirs, with a list of directories never to be deleted, under any circumstances (this list is checked every time PICA is about to delete some directory recursively). Here's a pica.conf sample file:

defaults {
   picaroot  = /var/lib/pica;               # config files
   picatmp   = /var/lib/pica/tmp;
   picasrc   = /var/lib/pica/src;           # distribution files
   picainclude = /usr/lib/pica/include;

   sshpath   = '/usr/local/bin/ssh '; # ssh binary
   diffpath  = '/usr/bin/diff'; # diff binary for -f command
   tarpath   = '/bin/tar';      # tar binary
   rsyncpath = '/usr/local/bin/rsync';

   protecteddirs {
      /,
      /bin,
      /usr/bin,
      /lib,
      /usr/lib,
      /var/lib/pica
   }
}

I hope all of this is self-explanatory.