#1

Given that interest in tanglu seems to be declining, is there an easy way to migrate to debian?

#2

I wondered about that too. Looking for migration between Ubuntu&Debian on the web it seems like people say: "Don't do it"
Theoretically you could change the apt sources and try. But might be quite risky.
I even would rather go on a Debian derivat but not the original one.

#3

Since the last version of Tanglu is based on Debian Testing I would use testing repo or wait for Stretch to be released.