add miniflux module

modules/miniflux.nix

@@ -0,0 +1,25 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.services.miniflux-custom;
+in
+{
+  options.services.miniflux-custom = {
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 8070;
+      description = "Port for Miniflux to listen on";
+    };
+  };
+
+  config = {
+    services.miniflux = {
+      enable = true;
+      adminCredentialsFile = "/etc/miniflux-admin-credentials";
+      config = {
+        LISTEN_ADDR = "0.0.0.0:${toString cfg.port}";
+        BASE_URL = "https://rss.yanlincs.com";
+      };
+    };
+  };
+}