Building B2G

While trying to build B2G (from https://github.com/mozilla-b2g/B2G), I find that many of the packages no more exist in mozilla-central.

I understand that mozilla removed supported for B2G a while ago.

However is it possible to build B2G ?
Can the build scripts be modified to pull the dependencies from https://archive.mozilla.org/pub/firefox/nightly ?

Has anybody tried building B2G off late ?
It would be a great help if any of you could nudge me in the right approach to get a successful build.

Hi, I successfully built B2GOS on my device (OnePlus x). Last month, I tried to build it automatically using Github action. And my build scripts in here: https://github.com/b2g2onyxL/B2GOS-ci/blob/master/.github/workflows/build.yml
If have any questions about build it you can join telegram gourp : http://huit.re/ServonkTelegram or https://chat.mozilla.org/