GitHub - albertosaurus/pg_comment: Ruby gem that adds PostgreSQL comment support to Rails migrations.
GitHub - larskanis/activerecord-postgresql-adapter: This gem forwards to activerecord's default postgresql adapter
![Solving issues “Could not find gem 'pg (~> 0.18)' when creating PostgreSQL db in MacOSX High Sierra | by Hidayat Abisena | Medium Solving issues “Could not find gem 'pg (~> 0.18)' when creating PostgreSQL db in MacOSX High Sierra | by Hidayat Abisena | Medium](https://miro.medium.com/max/1200/1*UqCogN5IEBSY09ZVshglGg.png)
Solving issues “Could not find gem 'pg (~> 0.18)' when creating PostgreSQL db in MacOSX High Sierra | by Hidayat Abisena | Medium
![error while trying to create a new app with postgresql (rails new myapp -d postgresql) - Stack Overflow error while trying to create a new app with postgresql (rails new myapp -d postgresql) - Stack Overflow](https://i.stack.imgur.com/ZBfg0.png)