feat(django-apps): Add automatic backup

modules/nixos/dgn-backups/default.nix

@@ -11,7 +11,12 @@
 }:
 
 let
-  inherit (lib) mkEnableOption mkOption remove;
+  inherit (lib)
+    getExe'
+    mkEnableOption
+    mkOption
+    remove
+    ;
 
   inherit (lib.types)
     attrs
@@ -93,7 +98,7 @@ in
       "${db}-db".settings = {
         user = "postgres";
         command = [
-          "${lib.getExe' config.services.postgresql.package "pg_dump"}"
+          (getExe' config.services.postgresql.package "pg_dump")
           db
         ];
       };
@@ -113,6 +118,8 @@ in
               "storage01"
               "vault01"
               "web01"
+              "web02"
+              "web03"
             ];
             allowed = [ "put" ];
           }

modules/nixos/django-apps/default.nix

@@ -732,5 +732,14 @@ in
           ) config.extraServices)
         ) cfg.sites);
     };
+
+    dgn-backups = {
+      jobs = mapAttrs' (
+        name: _: nameValuePair "dj-${name}" { settings.paths = [ "/var/lib/django-apps/${name}" ]; }
+      ) cfg.sites;
+      postgresDatabases = builtins.map (name: "dj-${name}") (
+        attrNames (filterAttrs (_: { dbType, ... }: dbType == "postgresql") cfg.sites)
+      );
+    };
   };
 }