fix(authelia,lldap): Persist important state directories

modules/nixos/deertopia/authelia.nix

@@ -11,13 +11,6 @@ in {
       type = lib.types.port;
       default = 9091;
     };
-    stateDirectory = lib.mkOption {
-      description = ''
-        The directory under which Authelia's general state will be stored.
-      '';
-      type = lib.types.path;
-      default = "/var/lib/authelia-deertopia";
-    };
     bindUserName = lib.mkOption {
       description = ''
         The name of the LDAP user Authelia will bind as.
@@ -27,7 +20,9 @@ in {
     };
   };
 
-  config = lib.mkIf cfg.enable {
+  config = lib.mkIf cfg.enable
+    (let authelia-state-dir = "/var/lib/authelia-deertopia";
+     in {
        sydnix.sops.secrets =
          let e = {
                mode = "0600";
@@ -41,14 +36,9 @@ in {
            authelia-authentication-backend-ldap-password = e;
          };
 
-    # I don't think the Authelia NixOS module exposes or even creates any paths
-    # for the service's state.  No big deal, we'll do it ourselves…
-    #
-    # It is obligatory that I mention tmpfiles.d(5) every time this setting is used.
-    systemd.tmpfiles.settings."10-authelia".${cfg.stateDirectory} = {
-      v.user = config.services.authelia.instances."deertopia".user;
-      v.group = config.services.authelia.instances."deertopia".group;
-    };
+       sydnix.impermanence.directories = [
+         authelia-state-dir
+       ];
 
        # See:
        #  - https://github.com/authelia/authelia/blob/v4.38.19/config.template.yml
@@ -74,7 +64,7 @@ in {
            theme = "auto";
            server = {
              address = "tcp://:${builtins.toString cfg.httpPort}";
-          asset_path = "${cfg.stateDirectory}/assets";
+             asset_path = "${authelia-state-dir}/assets";
              # Necessary for Nginx integration.  No, I do not understand what it
              # does.
              endpoints.authz.auth-request.implementation = "AuthRequest";
@@ -134,16 +124,16 @@ in {
                }
              ];
            };
-        storage.local.path = "${cfg.stateDirectory}/db.sqlite";
+           storage.local.path = "${authelia-state-dir}/db.sqlite";
            notifier = {
              disable_startup_check = false;
-          filesystem.filename = "${cfg.stateDirectory}/notifications";
+             filesystem.filename = "${authelia-state-dir}/notifications";
            };
            # Default is false, which prevents anything from showing up when you run
            # `systemctl status authelia-deertopia`, which is really, really confusing.
            log = {
              keep_stdout = true;
-          file_path = "${cfg.stateDirectory}/authelia.log";
+             file_path = "${authelia-state-dir}/authelia.log";
            };
          };
        };
@@ -179,5 +169,5 @@ in {
         '';
          };
        };
-  };
+     });
 }

modules/nixos/deertopia/lldap.nix

@@ -18,6 +18,10 @@ in {
     };
     users.groups.lldap = {};
 
+    sydnix.impermanence.directories = [
+      "/var/lib/private/lldap"
+    ];
+
     sydnix.sops.secrets =
       let e = {
             mode = "0440";