Add role for zrepl.

nix/configuration/configuration.nix

@@ -24,6 +24,7 @@
     ./roles/network
     ./roles/firewall
     ./roles/zsh
+    ./roles/zrepl
     ./roles/graphics
     ./roles/sound
     ./roles/sway

nix/configuration/roles/zrepl/default.nix

@@ -0,0 +1,45 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  services.zrepl = {
+    enable = true;
+    settings = {
+      jobs = [
+        {
+          name = "snapjob";
+          type = "snap";
+          filesystems = {
+            "zroot/linux/nix/persist<" = true;
+            "zroot/bridge<" = true;
+          };
+          snapshotting = {
+            type = "periodic";
+            interval = "15m";
+            prefix = "zrepl_";
+          };
+          pruning = {
+            keep = [
+              {
+                type = "grid";
+                grid = "1x1h(keep=all) | 24x1h | 14x1d";
+                regex = "^zrepl_.*";
+              }
+              {
+                type = "regex";
+                negate = true;
+                regex = "^zrepl_.*";
+              }
+            ];
+          };
+        }
+      ];
+    };
+  };
+}