buster=eos;upgrade=bullseye,bookworm,trixie,testing
focal=eos;upgrade=jammy,noble,oracular
bullseye=eos;upgrade=bookworm,trixie,testing
bookworm=supported;upgrade=trixie,testing
jammy=csc;upgrade=noble,oracular
noble=supported;upgrade=oracular
trixie=supported;upgrade=testing
oracular=eos;upgrade=none
plucky=csc;upgrade=none
sid=csc;upgrade=none
