use advanced database facilities of PostgreSQL you would probably be
better off with SQLite if you don't have PostgreSQL already installed.
+ If you are using SQLite, there is no need to specify dbi_user or dbi_pass.
+ So, just leave them like this:
+
+ dbi_user=""
+ dbi_passwd=""
+
+ If you specify dbi_user and than try to index using different user,
+ you won't be able to write into database.
+
2. Use CPAN shell to install modules used:
$ sudo cpan