curl -sfL https://install.pgx.sh | sh -

brew install pgxman/tap/pgxman

pgxman search vector

pgxman install pgvector

# mac - connect to the container pgxman creates
$ psql postgres://postgres:[email protected]/postgres

# linux - restart postgres so it picks up newly installed extensions, then connect
$ sudo service postgresql restart
$ sudo -u postgres psql

postgres=# select * from pg_available_extensions;
...
postgres=# create extension vector;
CREATE EXTENSION