boost-ext
Using `#include` in purview of a named module
Replacing #include preprocessing directives with import directive for importable C++ library headers is implementation‐defined.
If the header identified by the header-name denotes an importable header ([module.import]), it is implementation-defined whether the #include preprocessing directive is instead replaced by an import directive ([cpp.import]) of the form
import header-name ; new-line
https://github.com/boost-ext/ut/blob/c3ed7a21a18a4de3fc807451ae86c9f51e706a11/include/boost/ut.hpp#L55
Using #include in purview of a named module yields C5244 in MSVC 2022 (19.30.30528).
'#include
' in the purview of module 'module-name-1' appears erroneous. Consider moving that directive before the module declaration, or replace the textual inclusion with 'import ;'.
