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  | 
#! /bin/sh
set -eux
{
  umount /mnt/nix || [ $? -eq 32 ]
  umount /mnt/boot || [ $? -eq 32 ]
  umount /mnt/root || [ $? -eq 32 ]
  umount /mnt || [ $? -eq 32 ]
  umount /boot || [ $? -eq 32 ]
  PATH=$(for i in /nix/store/*coreutils*/bin; do :; done; echo $i)
  export PATH
  mkdir /oldshit
  mv /bin /oldshit/
  mv /newshit/bin /
  # TODO ensure /boot is empty
  rmdir /newshit/boot
  # skip /dev
  rmdir /newshit/dev
  mv /etc /oldshit/
  mv /newshit/etc /
  # skip /nix (it's already there)
  rmdir /newshit/nix
  # skip /proc
  rmdir /newshit/proc
  # skip /run
  rmdir /newshit/run
  # skip /sys
  rmdir /newshit/sys
  # skip /root
  rmdir /newshit/root
  # skip /tmp
  # TODO rmdir /newshit/tmp
  mv /home /oldshit/
  mv /newshit/home /
  mv /usr /oldshit/
  mv /newshit/usr /
  mv /var /oldshit/
  mv /newshit/var /
  mv /lib /oldshit/
  mv /lib64 /oldshit/
  mv /sbin /oldshit/
  mv /srv /oldshit/
  mv /opt /oldshit/
  mv /newshit /root/  # TODO this one shoult be empty
  mv /oldshit /root/
  sync
}
  |