modules.services.btrbk: init

modules/services/btrbk.nix

@@ -0,0 +1,44 @@
+inputs:
+{
+  options.nixos.services.btrbk = let inherit (inputs.lib) mkOption types; in mkOption
+    { type = types.listOf types.nonEmptyStr; default = []; };
+  config = let inherit (inputs.config.nixos.services) btrbk; in inputs.lib.mkMerge
+  [
+    {
+      services.btrbk.sshAccess =
+      [{
+        key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC6VCXHvPZO7tB0Xo2VNEXkaijWCDxVIpfSuz8OrcUfU btrbk";
+        roles = [ "source" "info" ];
+      }];
+    }
+    (inputs.lib.mkIf (btrbk != [])
+    {
+      services.btrbk =
+      {
+        ioSchedulingClass = "idle";
+        instances.btrbk =
+        {
+          onCalendar = "*-*-* 4:00:00";
+          settings =
+          {
+            timestamp_format = "short";
+            snapshot_dir = "/nix/btrbk/snapshot";
+            snapshot_preserve_min = "1w";
+            target_preserve_min = "1m";
+            ssh_user = "btrbk";
+            ssh_identity = inputs.config.sops.secrets.btrbk.path;
+            volume = builtins.listToAttrs (builtins.map
+              (host:
+              {
+                name = "ssh://wg1.${host}/nix";
+                value.subvolume.persistent= {};
+                target = "/nix/btrbk/${host}";
+              })
+              btrbk);
+          };
+        };
+      };
+      sops.secrets.btrbk.owner = "btrbk";
+    })
+  ];
+}