> > All those distros, everyone except arch has decided at some point to no > longer restrict the use of unprivileged user namespaces. > In no way whatsoever does Arch restrict the use of unprivileged user namespaces. Rebuilding your kernel with them enabled is a trivial task for any user familiar with ABS. If you feel this strongly about it please write a wiki article about the benefits/tradeoffs and link it with the relevant application articles (Firejail, Security, etc.). Max