On a linux system this appears to be necessary, e.g. this doesn't compile for me:

#include <cstdint>
template<typename T>
struct foo {
 foo() = delete;
};
template<>
struct foo<unsigned long long> {};
int main() {
 foo<uint64_t> f;
 return 0;
}

I'm told on Windows it leads to a warning, so it looks like some research is required to come up with a solution that works on all platforms.