Ruby + Sinatra + Sequel, cannot load pg_ext

Question

I'm writing app using Ruby, Sinatra, psql and Sequel. I'm on Windows 7. I created database and wrote migations following tutorial. Now I should run them using

sequel -m migrations postgres://<username>:<password>@localhost/good_vids_development

but I'm getting an error AdapterNotFound, Load Error, cannot load such file: pg_ext.

Answer 1

Looks like the pg gem's C extension was not compiled. You either need to fix that or use a pure ruby driver (eg jeremyevans-postgres-pr).