[gentoo-dev] packages which won't support x32

This is the case with dev-lang/v8: it doesn't build on x32
(<https://bugs.gentoo.org/423815>), and upstream said they *won't*
support x32
(<https://groups.google.com/d/msg/v8-users/c-_URSZqTq8/7wHl095t2CMJ>).

Note that with v8 it's not just about getting v8 itself to compile, but
also making it generate correct JIT code on x32, which would require
substantial changes to v8 code (in fact, a whole new 40K arch port, see
the discussion linked to above).

Should dev-lang/v8 get p.masked on x32 profile, or is there some better
way to handle it? What are your suggestions?

I had a crazy idea to just build v8 and v8-dependent packages using
non-x32 ABI, but I'm not sure if it's possible and if it would be the
right thing to do.

Paweł