56 lines
1.4 KiB
Nix
56 lines
1.4 KiB
Nix
{ lib, ... }:
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let
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impermanence = builtins.fetchTarball "https://github.com/nix-community/impermanence/archive/master.tar.gz";
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in
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{
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boot.initrd.postResumeCommands = lib.mkAfter ''
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mkdir /btrfs_tmp
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mount /dev/mapper/crypted /btrfs_tmp
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if [[ -e /btrfs_tmp/@root ]]; then
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mkdir -p /btrfs_tmp/@old_roots
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timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
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mv /btrfs_tmp/@root "/btrfs_tmp/@old_roots/$timestamp"
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fi
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delete_subvolume_recursively() {
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IFS=$'\n'
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for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
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delete_subvolume_recursively "/btrfs_tmp/$i"
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done
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btrfs subvolume delete "$1"
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}
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for i in $(find /btrfs_tmp/@old_roots/ -maxdepth 1 -mtime +10); do
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delete_subvolume_recursively "$i"
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done
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btrfs subvolume create /btrfs_tmp/@root
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umount /btrfs_tmp
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'';
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imports = [ "${impermanence}/nixos.nix" ];
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environment.persistence."/persist" = {
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enable = true;
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hideMounts = true;
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directories = [
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"/var/log"
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"/var/lib/bluetooth"
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"/var/lib/nixox"
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"/var/lib/systemd/coredump"
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"/etc/NetworkManager/system-connections"
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];
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files = [
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"/etc/machine-id"
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];
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users.louis = {
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directories = [
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"Documents"
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"Downloads"
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];
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};
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};
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fileSystems."/persist".neededForBoot = true;
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}
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