Deprecate std_variant.hpp and remove variant2.hpp - #379
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gennaroprota merged 1 commit intoAug 14, 2026
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Support for `boost::variant`, `boost::variant2::variant` and `std::variant` has moved to variant.hpp. std_variant.hpp still compiled on its own, so it stays as a deprecated forwarding header. variant2.hpp could not have a working user: it declared a partial specialization whose argument list is identical to the primary template, which is ill-formed. It has been that way since 897dec4, the commit which gave `variant.hpp` its own variant2 support. So we remove it.
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Support for
boost::variant,boost::variant2::variantandstd::varianthas moved to variant.hpp.std_variant.hppstill compiled on its own, so it stays as a deprecated forwarding header.variant2.hppcannot have a working user: it declared a partial specialization whose argument list is identical to the primary template, which is ill-formed. It has been that way since 897dec4, the commit which gavevariant.hppits own variant2 support. So we remove it.