? sub () { 0 }
: sub () { 1 };
- *HAVE_ISAREV = defined(&mro::get_isarev)
- ? sub () { 1 }
- : sub () { 1 };
+ sub HAVE_ISAREV () { 1 }
# this is either part of core or set up appropriately by MRO::Compat
*check_package_cache_flag = \&mro::get_pkg_gen;