configure backups correctly

Set a reasonable retention policy, and drop the helper scripts, the
module for restic already does it.

1 files changed, 8 insertions, 11 deletions

diff --git a/profiles/restic-backup.nix b/profiles/restic-backup.nix
index 876641e..a608415 100644
--- a/profiles/restic-backup.nix
+++ b/profiles/restic-backup.nix
@@ -1,11 +1,4 @@
 { config, pkgs, ... }:
-let
-  restic-local = pkgs.writeShellScriptBin "restic-local" ''
-    export RESTIC_REPOSITORY="/data/backups/"
-    export RESTIC_PASSWORD_FILE="${config.age.secrets.restic-local-pw.path}"
-    exec ${pkgs.restic}/bin/restic "$@"
-  '';
-in
 {
   age = {
     secrets = {
@@ -15,9 +8,8 @@ in
     };
   };
 
-  environment.systemPackages = [
-    pkgs.restic
-    restic-local
+  environment.systemPackages = with pkgs; [
+    restic
   ];
 
   services.restic = {
@@ -27,9 +19,14 @@ in
         passwordFile = config.age.secrets.restic-local-pw.path;
         repository = "/data/backups/";
         initialize = true;
-        timerConfig.OnCalendar = "*-*-* *:00:00";
+        timerConfig.OnCalendar = "daily";
         timerConfig.RandomizedDelaySec = "5m";
         extraBackupArgs = [ ];
+        pruneOpts = [
+          "--keep-daily=7"
+          "--keep-weekly=4"
+          "--keep-monthly=12"
+        ];
       };
     };
   };