The last lua5.2 release was on 07 Mar 2015. As upstream will not release any other version, we should get lua5.2 out of
Debian as the least-used lua version that is still in the archive. I have filed "low-hanging fruit" bugs for the
packages that support other lua versions as well and have blocked this issue on them.
The packages that need more investigation are:
dnsmasq
kyua
lutok
lcm
qosmic
tolua
uwsgi
The rest of the reverse dependencies are depending on "lua5.2 | lua5.x" (OR depends), so they should not be a problem.