Hello,Thanks for the patch! I'm about to upload a new package to fix the postgresql install, including pgcrypto.
Although upgrading the package from Debian Buster will not upgrade the database content. I added a debian/NEWS file to make this more clear on package upgrade.
/Nicolas
OpenPGP_0xFE82139440BD22B9.asc
Description: application/pgp-keys
OpenPGP_signature
Description: OpenPGP digital signature
