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_internal

fx.tc.elaborate._internal: cross-part elaboration helpers reachable from sibling parts via the self-fixpoint; not part of the stable consumer surface.

reifyDesc

reifyDesc: kernel-to-HOAS description rebuild — converts a description Val back to an HOAS description; counterpart to reifyType used internally by extractInner for mu decoding fallbacks.

reifyDesc : Val -> Hoas

Reverses evalDesc: walks a description Val via descView and rebuilds the corresponding HOAS form (H.descRet, H.descArg, H.descRec, H.descPi, H.plus). Recursion is in self so descRec / plus sub-descriptions traverse uniformly.

Used by reifyType's VMu fallback when no sugared shape (Bool / Nat / List / Sum) matches the description: the result is an anonymous H.mu (reifyDesc D) H.tt that extractInner's mu branch can then decode against an optional _dtypeMeta.

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