The old version was:
rebar 2.6.4 17 20170823_084242 git 2.6.4-27-g8076675-dirty
and it couldn't work with Erlang/OTP 25
This new version is
rebar 2.6.4 22 20220426_202500 git 2.6.4-39-gb6d3094
compiled from master branch from
https://github.com/rebar/rebar
using erlang:22-slim docker image
To compile ejabberd using rebar and ancient Erlang 19.3-21.3,
you need a rebar binary compiled with an old Erlang.
If your operating system doesn't provide one, you can download
the old one included in ejabberd 21.12, available at:
https://github.com/processone/ejabberd/raw/21.12/rebar
Use dynamic Rebar configuration
Make iconv dependency optional
Disable transient_supervisors compile option
Add hipe compilation support
Only compile ibrowse and lhttpc when needed
Make it possible to generate an OTP application release
Add --enable-debug compile option
Add --enable-all compiler option
Add --enable-tools configure option
Add --with-erlang configure option.
Add --enable-erlang-version-check configure option.
Add lager support
Improve the test suite
