keychain-126.96.36.199 compiles and works on ppc-macos.
1) echo "net-misc/keychain ~ppc" >> /etc/portage/package.keywords
2) emerge keychain
3) Run keychain:
/usr/bin/keychain -q ~/.ssh/id_dsa
No, it doesn't compile. Yes, it works, but I update all the keychain keywords simultaneously instead of leaving it to arch maintainers. I'll mark it in a couple days.
Closing out bugs that've been resolved for a while now...