I am puzzled as to why SuiteSparse_GraphBLAS drags in clang17 and
SuiteSparse_LAGraph drags in both clang16 and clang17 as build
dependencies. I don't see anything in the SuiteSparse Portfile showing
those dependencies.
See this line
https://github.com/macports/macports-ports/blob/6220707ee57fe3a51e273a950c4dfe4e7018bd01/math/SuiteSparse/Portfile#L128
likely that veto's any Xcode provided clang, and thus you fall back to
using the MacPorts provided versions, e.g. clang-17
If clang-17 has issues on macOS15 then please open a trac ticket for
this, if there isn't one already.
