treewide: use lib.singleton

home/applications/sway/default.nix

@@ -36,15 +36,13 @@
     config = {
       ### Visuals
       output."*".bg = "${inputs.self.legacyPackages.${pkgs.stdenv.hostPlatform.system}.background} fill";
-      bars = [
-        {
+      bars = lib.singleton {
         statusCommand = "${lib.getExe pkgs.i3status-rust} $HOME/.config/i3status-rust/config-default.toml";
         position = "top";
         extraConfig = ''
           icon_theme ${config.gtk.iconTheme.name}
         '';
-        }
-      ];
+      };
 
       ### Inputs
       input = {

hosts/blacksteel/hardware-configuration.nix

@@ -1,4 +1,5 @@
 {
+  lib,
   inputs,
   config,
   ...
@@ -43,7 +44,5 @@
       fsType = "vfat";
     };
   };
-  swapDevices = [
-    { device = "/dev/disk/by-uuid/8a2e90a9-5cc2-40fc-82fe-69ef3cd88e29"; }
-  ];
+  swapDevices = lib.singleton { device = "/dev/disk/by-uuid/8a2e90a9-5cc2-40fc-82fe-69ef3cd88e29"; };
 }

hosts/blacksteel/services/matrix.nix

@@ -1,4 +1,4 @@
-{ config, ... }:
+{ lib, config, ... }:
 {
   services.matrix-synapse = {
     enable = true;
@@ -13,15 +13,13 @@
         {
           path = "/run/matrix-synapse/synapse.sock";
           type = "http";
-          resources = [
-            {
+          resources = lib.singleton {
             names = [
               "client"
               "federation"
             ];
             compress = true;
-            }
-          ];
+          };
         }
       ];
 
@@ -32,8 +30,7 @@
       };
 
       # https://element-hq.github.io/synapse/latest/openid.html#keycloak
-      oidc_providers = [
-        {
+      oidc_providers = lib.singleton {
         idp_id = "keycloak";
         idp_name = "id.ny4.dev";
         issuer = "https://id.ny4.dev/realms/ny4";
@@ -49,8 +46,7 @@
         };
         backchannel_logout_enabled = true;
         allow_existing_users = true;
-        }
-      ];
+      };
     };
   };
 

hosts/tyo0/default.nix

@@ -25,12 +25,10 @@
   boot.loader.grub.device = lib.mkForce "/dev/nvme0n1";
   system.stateVersion = "24.05";
 
-  swapDevices = [
-    {
+  swapDevices = lib.singleton {
     device = "/var/lib/swapfile";
     size = 4 * 1024; # 4 GiB
-    }
-  ];
+  };
 
   # WORKAROUND:
   systemd.services."print-host-key".enable = false;

hosts/tyo0/services/sing-box.nix

@@ -1,4 +1,4 @@
-{ config, ... }:
+{ lib, config, ... }:
 {
   networking.firewall.allowedTCPPorts = [
     27253
@@ -30,12 +30,10 @@
         }
       ];
 
-      outbounds = [
-        {
+      outbounds = lib.singleton {
         type = "direct";
         tag = "direct";
-        }
-      ];
+      };
 
       route = {
         final = "direct";

nixos/profiles/sing-box/default.nix

@@ -12,16 +12,14 @@
         level = "info";
       };
 
-      inbounds = [
-        {
+      inbounds = lib.singleton {
         type = "http";
         tag = "inbound";
         listen = "127.0.0.1";
         listen_port = 1080;
         sniff = true;
         sniff_override_destination = true;
-        }
-      ];
+      };
 
       outbounds = [
         {