I tried to create this myself and nothing terrible happened. First, I created the new directory,
profiles/default/linux/amd64/17.0/hardened/no-multilib (1) So, first question: is there a preference between the two choices there, either "17.0/hardened/no-multilib" or "17.0/no-multilib/hardened"? In the new directory (1), I created an "eapi" file containing "5", and a "parent" file containing ../../no-multilib ../../../../../../features/hardened/amd64 I considered using "features/hardened/amd64/no-multilib" as a parent, but it doesn't look like anything else is doing so. So my second question is: is "features/hardened/amd64/no-multilib" unused? And/or should I be using it? Finally, I added amd64 default/linux/amd64/17.0/hardened/no-multilib dev to profiles.desc. After eselecting the new profile, "emerge -uDN @world" turns up no changes (from my old no-multilib profile).
