- raise exception if dep isn't satisfied
- raise exception if dep isn't satisfied

Alwnikrotikz/pysal,google-code-export/pysal,AlanZatarain/pysal,google-code-export/pysal,tectronics/pysal,tectronics/pysal,google-code-export/pysal,google-code-export/pysal,Alwnikrotikz/pysal,pombreda/pysal,AlanZatarain/pysal,pombreda/pysal,pombreda/pysal,tectronics/pysal,pombreda/pysal,Alwnikrotikz/pysal,AlanZatarain/pysal