This Symfony package has some modifications to satisfy the Fedora packaging
requirements.

The main change is the removal of these libraries which are usually included
with Symfony:

- vendor/swiftmailer
- plugins/sfDoctrinePlugin/lib/vendor/doctrine
- plugins/sfPropelPlugin/lib/vendor/phing
- plugins/sfPropelPlugin/lib/vendor/propel
- plugins/sfPropelPlugin/lib/vendor/propel-generator

except of propel these should all use the respective packages supplied by
Fedora.

Currently there is no prople package for Fedora with the correct version. 

You should be able to use symfony without problems with Doctrine though.