into the new cluster, e.g. <filename>pgcrypto.so</filename>,

whether they are from <filename>contrib</filename>

or some other source. Do not install the schema definitions, e.g.

<filename>pgcrypto.sql</>, because these will be upgraded from the old cluster.

<command>CREATE EXTENSION pgcrypto</>, because these will be upgraded

from the old cluster.

Also, any custom full text search files (dictionary, synonym,

thesaurus, stop words) must also be copied to the new cluster.

</para>