use hastebin nixos module

modules/services/bin.nix

@@ -1,17 +1,34 @@
-{ lib, pkgs, config, inputs, ... }:
+{ lib, config, inputs, ... }:
 let
   cfg = config.modules.services.bin;
   fqdn = "${cfg.subdomain}.${config.networking.domain}";
   KiB = 1024;
   MiB = 1024 * KiB;
   GiB = 1024 * MiB;
+in
+{
+  imports = [
+    inputs.hastebin.nixosModules.default
+  ];
 
+  options.modules.services.bin = {
+    enable = lib.mkEnableOption "Enable Rustypaste";
+    subdomain = lib.mkOption {
+      type = lib.types.str;
+    };
+    port = lib.mkOption {
+      type = lib.types.int;
+      default = 3600;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.hastebin = {
+      enable = true;
       settings = {
         port = cfg.port;
         host = "::1";
         max_size = 1 * GiB;
-    default_extension = "txt";
-    data_dir = "/var/lib/hastebin";
         mime_overrides = {
           "text/plain" = [
             "log"
@@ -30,41 +47,6 @@ let
         };
         auth_tokens_file = "/var/secrets/hastebin-tokens";
       };
-
-  hastebinConfig = (pkgs.formats.yaml { }).generate "hastebin.yml" settings;
-  hastebin = inputs.hastebin.packages.${pkgs.system}.default;
-in
-{
-  options.modules.services.bin = {
-    enable = lib.mkEnableOption "Enable Rustypaste";
-    subdomain = lib.mkOption {
-      type = lib.types.str;
-    };
-    port = lib.mkOption {
-      type = lib.types.int;
-      default = 3600;
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    systemd.services.hastebin = {
-      enable = true;
-      description = "Hastebin pastebin";
-      environment = {
-        HASTEBIN_CONFIG = hastebinConfig;
-      };
-      serviceConfig = {
-        ExecStart = "${hastebin}/bin/hastebin";
-        WorkingDirectory = "/var/lib/hastebin";
-        StateDirectory = "hastebin";
-        DynamicUser = true;
-        BindReadOnlyPaths = [ "/var/secrets/hastebin-tokens" ];
-      };
-      wantedBy = [ "multi-user.target" ];
-      confinement = {
-        enable = true;
-        packages = [ hastebinConfig ];
-      };
     };
 
     modules.services.webserver = {
@@ -72,7 +54,7 @@ in
       vHosts.${fqdn}.locations."/" = {
         proxyPort = cfg.port;
         extraConfig = ''
-          client_max_body_size ${toString (settings.max_size / MiB)}m;
+          client_max_body_size ${toString (config.services.hastebin.settings.max_size / MiB)}m;
           proxy_send_timeout   300;
           proxy_read_timeout   300;
           send_timeout         300;