A Rank 0 CXU states that PYRANA follows a libs-first philosophy in which all new functionality starts in library packages before any later promotion.

"PYRANA follows a libs-first philosophy: all new functionality starts in library packages"

— PYRANA_Internal_Knowledge_Graph_Specification.md

**Rank 0 CXUs (always included):**

— PYRANA_Internal_Knowledge_Graph_Specification.md

### 3.1 UNIVERSAL Set

— PYRANA_Internal_Knowledge_Graph_Specification.md