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