psycopg2 should be optional
This would be great. Ubuntu seemed to want Postgres installed in order to satisfy psycopg through pip. I'm currently just commenting out the import locally :(
 Issue fixed in https://github.com/coleifer/peewee/commit/5c5d6933e383748a99cdf5e092076a61884feebb

Thanks for reporting!!

This is a pull request to address https://github.com/coleifer/peewee/issues/#issue/5
