132 lines
4.6 KiB
Nix
132 lines
4.6 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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with lib;
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{
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options = {
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environment.impermanence.users = mkOption {
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description = "Which users to clean up the home directory for";
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default = [ ];
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type = types.listOf types.str;
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};
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};
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config =
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mkIf (config.environment.impermanence.enable && config.environment.impermanence.users != [ ])
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{
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programs.fuse.userAllowOther = true;
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home-manager.users = listToAttrs (
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map (name: {
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inherit name;
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value =
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{ config, ... }:
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{
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home.file."${config.home.homeDirectory}/.cache/.keep" = {
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enable = false;
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};
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home.persistence.default = {
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persistentStoragePath = "/persistent/home/${name}";
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allowOther = true;
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defaultMethod = "symlink";
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directories = [
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"Downloads"
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"Music"
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"Pictures"
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"Documents"
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"Videos"
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".cache"
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"Data"
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];
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};
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};
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}) config.environment.impermanence.users
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);
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systemd.tmpfiles.rules = mkMerge (
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map (name: [
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"d /persistent/home/${name} 700 ${name} ${config.users.users.${name}.group} - -"
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"d /persistent/home/${name}/.cache 700 ${name} ${config.users.users.${name}.group} 7d -"
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]) config.environment.impermanence.users
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);
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systemd.services = listToAttrs (
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flatten (
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map (
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name:
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let
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cfg = config.users.users.${name};
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in
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[
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{
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name = "cleanup-home-${name}";
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description = "Clean home directory for ${name}";
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value = {
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before = [
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"user@${toString cfg.uid}.service"
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"home-manager-${name}.service"
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];
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partOf = [
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"user@${toString cfg.uid}.service"
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];
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conflicts = [
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"home-darkkirb-.mozilla.mount"
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"home-darkkirb-.thunderbird.mount"
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];
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serviceConfig.Type = "oneshot";
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script = ''
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if [[ -e ${cfg.home} ]]; then
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timestamp=$(date --date="@$(stat -c %X ${cfg.home})" "+%Y-%m-%d_%H:%M:%S")
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mkdir -p /persistent/old-homedirs/${name}
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mv ${cfg.home} /persistent/old-homedirs/${name}/$timestamp
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fi
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delete_subvolume_recursively() {
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IFS=$'\n'
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for i in $(${pkgs.btrfs-progs}/bin/btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
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delete_subvolume_recursively "/persistent/old-homedirs/${name}/$i"
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done
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${pkgs.btrfs-progs}/bin/btrfs subvolume delete "$1" || rm -rf "$1"
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}
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for i in $(find /persistent/old-homedirs/${name} -maxdepth 1 -atime +30); do
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delete_subvolume_recursively "$i"
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done
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${pkgs.btrfs-progs}/bin/btrfs subvolume create ${cfg.home}
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chown -R ${name}:${cfg.group} ${cfg.home}
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mkdir -p /persistent/home/${name}
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chown -R ${name}:${cfg.group} /persistent/home/${name}
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'';
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};
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}
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{
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name = "home-manager-${name}";
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value = {
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wants = [
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"home-darkkirb-.mozilla.mount"
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"home-darkkirb-.thunderbird.mount"
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];
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wantedBy = [
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"user@${toString cfg.uid}.service"
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];
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after = [
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"cleanup-home-${name}.service"
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"home-darkkirb-.mozilla.mount"
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"home-darkkirb-.thunderbird.mount"
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];
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before = [
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"user@${toString cfg.uid}.service"
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];
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partOf = [
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"user@${toString cfg.uid}.service"
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];
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};
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}
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]
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) config.environment.impermanence.users
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)
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);
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};
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}
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