I am using Debian for long time and really like it for stability. Recently I wondered if it is possible to run Arch Linux from chroot. I want to run full Wayland session from Arch. I found Archbox project and it is worked for me, but I couldn’t start any Wayland compositor from tty (Error: can’t connect to Wayland socket . ). How can I properly do this? Or maybe there is a better way than chroot?
Because you’re relying on compatibility between older Debian software (systemd, etc) and newer versions installed in the chroot. Things get weird quickly.
Consider a nested privileged container instead (LXC or similar) and cross your fingers that Debian systemd and Arch systemd play nice.
If the above fails just make a VM and pass through the GPU with GVT-g (otherwise pass through the entire GPU.)
If all of that fails install Arch to a USB attached SSD or something.