Comment (by Roland Haas):

This seems to actually have been due to newer compilers pulling in C++23 stdc++ library files, which push more names into the std namespace. Pull request https://github.com/EinsteinToolkit/CarpetX/pull/381 addresses this and resolves this ticket as well.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2922/carpetx-does-not-compile-with-cuda-129