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|
{
config,
lib,
...
}:
with lib; let
cfg = config.local.boot.impermanence;
#TODO: type correcto de files, directories?
entryOption = mkOption {
type = with lib.types; listOf (either str attrs);
default = [];
};
persistPath = "/persist";
trustPath =
if cfg.trust.path != null
then cfg.trust.path
else persistPath;
in {
options.local.boot.impermanence = {
enable = mkEnableOption "root fs impermanence";
files = entryOption;
directories = entryOption;
trust = {
path = mkOption {
type = with lib.types; nullOr path;
default = null;
};
files = entryOption;
directories = entryOption;
};
};
config = mkMerge [
{
local.boot.impermanence = {
directories = [
"/etc/lvm"
"/var/lib/lastlog"
"/var/lib/nixos"
"/var/lib/systemd"
"/var/log"
];
files =
[
"/etc/machine-id"
"/var/lib/logrotate.status"
]
++ optionals config.users.mutableUsers [
"/etc/group"
"/etc/passwd"
"/etc/shadow"
"/etc/subuid"
"/etc/subgid"
];
trust = {
directories = [
"/var/trust"
];
};
};
}
(mkIf cfg.enable {
assertions = [
{
assertion = (config.fileSystems ? ${persistPath}) && config.fileSystems.${persistPath}.neededForBoot;
message = "Impermanence requires ${persistPath} to be a neededForBoot mountpoint";
}
];
environment.persistence = mkMerge [
{
${persistPath} = {
hideMounts = true;
files = cfg.files;
directories = cfg.directories;
};
}
{
${trustPath} = {
hideMounts = true;
files = cfg.trust.files;
directories = cfg.trust.directories;
};
}
];
})
];
}
|
