09377e37ea
- Remove remaining obsolete Arch-era scripts (branch-set, debug, upload-log, etc.) - Add /var/lib/fprint to impermanence persistence for fingerprint survival - Add /etc/supergfxd.conf to impermanence persistence for GPU mode survival
64 lines
1.7 KiB
Nix
64 lines
1.7 KiB
Nix
{ config, lib, pkgs, inputs, ... }:
|
|
|
|
let
|
|
cfg = config.nomarchy.system.impermanence;
|
|
in
|
|
{
|
|
imports = [
|
|
inputs.impermanence.nixosModules.impermanence
|
|
];
|
|
|
|
options.nomarchy.system.impermanence = {
|
|
enable = lib.mkEnableOption "Erase Your Darlings (Impermanence) root wipe on boot";
|
|
};
|
|
|
|
config = lib.mkIf cfg.enable {
|
|
# 1. The Rollback Script: Runs in initrd before filesystems are mounted
|
|
boot.initrd.postDeviceCommands = lib.mkAfter ''
|
|
mkdir -p /btrfs_tmp
|
|
mount -o subvol=/ /dev/mapper/crypted /btrfs_tmp
|
|
|
|
if [[ -e /btrfs_tmp/@ ]]; then
|
|
mkdir -p /btrfs_tmp/old_roots
|
|
timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/@)" "+%Y-%m-%-d_%H:%M:%S")
|
|
mv /btrfs_tmp/@ "/btrfs_tmp/old_roots/$timestamp"
|
|
fi
|
|
|
|
delete_subvolume_recursively() {
|
|
IFS=$'\n'
|
|
for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
|
|
delete_subvolume_recursively "/btrfs_tmp/$i"
|
|
done
|
|
btrfs subvolume delete "$1"
|
|
}
|
|
|
|
for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
|
|
delete_subvolume_recursively "$i"
|
|
done
|
|
|
|
btrfs subvolume snapshot /btrfs_tmp/root-blank /btrfs_tmp/@
|
|
umount /btrfs_tmp
|
|
'';
|
|
|
|
# 2. Persistence Configuration: What survives the wipe
|
|
environment.persistence."/persist" = {
|
|
hideMounts = true;
|
|
directories = [
|
|
"/var/log"
|
|
"/var/lib/nixos"
|
|
"/var/lib/systemd/coredump"
|
|
"/var/lib/systemd/timesync"
|
|
"/var/lib/bluetooth"
|
|
"/var/lib/fprint"
|
|
"/etc/NetworkManager/system-connections"
|
|
"/etc/nixos"
|
|
"/etc/ssh"
|
|
];
|
|
files = [
|
|
"/etc/machine-id"
|
|
"/etc/supergfxd.conf"
|
|
];
|
|
};
|
|
};
|
|
}
|