Did anyone manage to install nixos directly from a flake? I have run into some problems trying to:
Boot NixOS 20.09
Start shell with new nix version & git: nix-shell -p nixUnstable git (or nixFlakes)
Clone Flake to /mnt/flake
nixos-install --flake /mnt/flake#somehost
I am getting access to /mnt/nix/store/...-source/flake.nix is forbidden in restricted mode
Also there is a warning: unknown setting 'extra-sanbox-paths'
I have the same problem when I try to install nixos from flakes being booted on minimal iso image, using latest nixUnstable from nixos-20.09 but in my case it’s refusing to access /mnt/nix/store/<hash>-nmd