.filter(Override.package == re.sub('/(contrib|non-free)$', '', source)) \
.join(Override.overridetype).filter(OverrideType.overridetype == 'dsc') \
.first()
.filter(Override.package == re.sub('/(contrib|non-free)$', '', source)) \
.join(Override.overridetype).filter(OverrideType.overridetype == 'dsc') \
.first()