nixos-config/services/restic/common.nix

37 lines
1 KiB
Nix

{ config, lib, pkgs, ... }:
# using the restic cli:
# load credentials into shell via: export $(cat /path/to/credentials/file | xargs)
# useful commands for analysing restic stats [snapshot-id], restic diff [s1] [s2],
with lib;
with builtins;
let hasAnyAttr = flip (attrset: any (flip hasAttr attrset));
in {
resticConfig = args@{ name, extraPruneOpts ? [ ], ... }:
assert !hasAnyAttr [
"initialize"
"repository"
"s3CredentialsFile"
"passwordFile"
"pruneOpts"
] args;
(removeAttrs args [ "name" "extraPruneOpts" ]) // {
initialize = true;
repository = "b2:felschr-backups:/${name}";
environmentFile = "/etc/nixos/secrets/restic/b2";
passwordFile = "/etc/nixos/secrets/restic/password";
timerConfig = if (args ? timerConfig) then
args.timerConfig
else {
OnCalendar = "daily";
};
pruneOpts = [
"--keep-daily 7"
"--keep-weekly 4"
"--keep-monthly 3"
"--keep-yearly 1"
] ++ extraPruneOpts;
};
}