SanskritFritz [1] filed a deletion request for sanewall [2]:

Sanewall is a fork of Firehol created at the time when Firehol seemed
to be abandoned. In the meanwhile Firehol developer returned and
joined forces with Sanewall developer, merging all changes back to
Firehol. Sanewall will be wound down and is not developed further
according to Sanewall dev:
https://github.com/ktsaou/firehol/issues/1#issuecomment-60474303

[1] https://aur.archlinux.org/account/SanskritFritz/
[2] https://aur.archlinux.org/pkgbase/sanewall/