Loup ROM
Unofficial LOS builds compiled against Clang 4.0/uberTC 6 for santoni
.../bitrvmpd/android_device_xiaomi_santoni
Kernel Tree: https://github.com/bitrvmpd/msm-3.18
Update: I disabled reviews because I don't want people requesting features in the comments. Remember "Unofficial LOS builds compiled against Clang [3.8][4.0]/uberTC 6" and Delta updates. So, it's for people who want vanilla LOS with the benefict of small size updates (security updates mainly).
And for "custom kernel support"... the kernel should add support, not the other way around.