pub fn gdn_scalar_spine_from(
pipe: Option<&str>,
vtile: Option<&str>,
) -> GdnScalarSpineExpand description
2026-09-28: From the values of METRALE_GDN_PIPE and METRALE_GDN_VTILE: PIPE=1
picks the pipe spine (as before), else VTILE=1 the vtile spine, else PIPE=0 the
vfused spine, else the pipe spine.