/etc/fstab for a chroot in a read-only Steam Deck

script.sh

# Static information about the filesystems.
# See fstab(5) for details.

# <file system> <dir> <type> <options> <dump> <pass>
# SteamOS partitions
#/dev/disk/by-partsets/self/rootfs /       ext4    defaults                0       1
#/dev/disk/by-partsets/self/var    /var    ext4    defaults                0       2
/dev/disk/by-partsets/self/efi    /efi    vfat    defaults,nofail,umask=0077,x-systemd.automount,x-systemd.idle-timeout=1min 0       2
/dev/disk/by-partsets/shared/esp  /esp    vfat    defaults,nofail,umask=0077,x-systemd.automount,x-systemd.idle-timeout=1min 0       2
/dev/disk/by-partsets/shared/home /home   ext4    defaults,nofail,x-systemd.growfs 0       2
## Mounts of the /usr/bin/arch-chroot script
proc      /home/deck/.chroot/proc                       proc       nosuid,noexec,nodev,nofail 0 3
sys       /home/deck/.chroot/sys                        sysfs      nosuid,noexec,nodev,ro,nofail 0 3
udev      /home/deck/.chroot/dev                        devtmpfs   mode=0755,nosuid,nofail 0 3
devpts    /home/deck/.chroot/dev/pts                    devpts     mode=0620,gid=5,nosuid,noexec,nofail 0 3
#shm       /home/deck/.chroot/dev/shm                    tmpfs      mode=1777,nosuid,nodev,nofail 0 3
/run      /home/deck/.chroot/run                        none       bind,nofail 0 3
#tmp       /home/deck/.chroot/tmp                        tmpfs      mode=1777,strictatime,nodev,nosuid 0 3
efivarfs  /home/deck/.chroot/sys/firmware/efi/efivars   efivarfs   nosuid,noexec,nodev,nofail 0 3
# Redirects the chroot home to the SteamOS home
/home                     /home/deck/.chroot/home           none    bind,nofail 0       4
# Allows the chroot to acces SteamOS with /steamos
/                         /home/deck/.chroot/steamos        none    bind,nofail 0       5
# [DEPRECATED: use home mount] /home                     /home/deck/.chroot/steamos/home   none    bind 0       5
# Audio
/var/lib/dbus             /home/deck/.chroot/var/lib/dbus   none    bind,nofail 0       5
/dev/shm                  /home/deck/.chroot/dev/shm        none    bind,nofail 0       5
/tmp                      /home/deck/.chroot/tmp            none    bind,nofail 0       5
# Allows pacman in chroot to work correctly
/home/deck/.chroot         /home/deck/.chroot               none    bind,nofail 0       6