我通过 macports 安装了 postgresql 9.2。通常我可以通过在我正在使用的数据库中运行“创建扩展”命令来安装扩展。虽然它适用于fuzzystrmatch，但我找不到适合立方体模块的文件。以下是我安装的模块。
select * from pg_available_extensions;
name | default_version | installed_version | -
adminpack | 1.0 | | administrative functions for PostgreSQL
dblink | 1.0 | | connect to other PostgreSQL databases from within a database
file_fdw | 1.0 | | foreign-data wrapper for flat file access
fuzzystrmatch | 1.0 | 1.0 | determine similarities and distance between strings
lo | 1.0 | | Large Object maintenance
pageinspect | 1.0 | | inspect the contents of database pages at a low level
pg_buffercache | 1.0 | | examine the shared buffer cache
pg_freespacemap | 1.0 | | examine the free space map (FSM)
pg_stat_statements | 1.1 | | track execution statistics of all SQL statements executed
pg_trgm | 1.0 | 1.0 | text similarity measurement and index searching based on trigrams
pgcrypto | 1.0 | | cryptographic functions
pgrowlocks | 1.0 | | show row-level locking information
pgstattuple | 1.0 | | show tuple-level statistics
plpgsql | 1.0 | 1.0 | PL/pgSQL procedural language
tablefunc | 1.0 | 1.0 | functions that manipulate whole tables, including crosstab
uuid-ossp | 1.0 | | generate universally unique identifiers (UUIDs)
(16 rows)
我在哪里可以下载其他缺失的模块？