a) don't do a disable pic unless you really want to, with your change
you'd also disable it for those user that actually want it on non x86_64
(e.g. for prelinking)
b) that bug seems to apply to stable grimoire only, as that's the only
grimoire that has old smgl-archspecs without PIC for x86_64
I'd say revert and mark the bug as fixed in lesser branch, as it doesn't
apply to stable-rc or newer.