Comment 40 for bug 1659922

Ugly as it is, but mozilla could also maintain profiles for different feature sets, or distros, respectively.

But there's more: Different versions of FF with different requirements. The only right place to keep track of that is in the source repo of FF. Even if Mozilla does not maintain it distro specific, it would allow distros to keep track of necessary changes, at least. The latter approach could at least serve as a reference.

The current situation is at least unsatisfying: Disabling the profile because it's unmaintainable.