Galaxy Nexus on Gentoo:
1. Bootloader entsperren
2.
fastboot flash recovery xxxxxxx.img
adb push su.zip /data/media
adb reboot recovery
http://www.galaxynexusforum.com/forum/galaxy-nexus-hacking-mods-lte-cdma/5420-howto-unlock-root-install-cwr-galaxy-nexus-ubuntu-linux-linux-mint-12-a.html