started writing module

modules/fedi/iceshrimp/option.nix

@@ -0,0 +1,33 @@
+{
+  pkgs,
+  lib,
+  ...
+}: let
+  inherit
+    (lib)
+    mkOption
+    mkPackageOption
+    ;
+  inherit (lib.types) nonEmptyStr attrsOf str;
+in {
+  options = {
+    services.iceshrimp = {
+      user = mkOption {
+        type = nonEmptyStr;
+        default = "iceshrimp";
+      };
+
+      group = mkOption {
+        type = nonEmptyStr;
+        default = "iceshrimp";
+      };
+
+      package = mkPackageOption pkgs "iceshrimp" {};
+
+      config = mkOption {
+        type = attrsOf str;
+        default = ./default_config.nix;
+      };
+    };
+  };
+}