From 93f130873eb23357a32cc04269dbf927c9041b17 Mon Sep 17 00:00:00 2001
From: Nadja Reitzenstein <me@dequbed.space>
Date: Thu, 28 Apr 2022 20:10:06 +0200
Subject: [PATCH] stay backwards compatible

---
 general.capnp    |  6 +++---
 usersystem.capnp | 21 +++++++++++++--------
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/general.capnp b/general.capnp
index 8819eef..9ce6218 100644
--- a/general.capnp
+++ b/general.capnp
@@ -39,7 +39,7 @@ struct Fallible(T, E) {
     # In those cases returning an `Optional` doesn't transfer information about the way that the
     # operation failed. `Fallible` contains this information in the generic `E` type.
     union {
-        successful @0 :T;
-        failed @1 :E;
+        failed @0 :E;
+        successful @1 :T;
     }
-}
+}
\ No newline at end of file
diff --git a/usersystem.capnp b/usersystem.capnp
index 722065b..0148425 100644
--- a/usersystem.capnp
+++ b/usersystem.capnp
@@ -27,14 +27,19 @@ struct UserSystem
     interface Manage $CSharp.name("ManageInterface") {
     	getUserList @0 () -> ( user_list :List(User) );
 
-        enum AddUserError {
-            alreadyExists @0;
-            # An user with that username already exists
-            usernameInvalid @1;
-            # The provided username is unusable, e.g. contains invalid characters,
-            # is too long or too short.
-        }
-    	addUser @1 (username :Text, password: Text) -> Fallible(User, AddUserError);
+        addUser @1 (username :Text, password: Text) -> User;
     	removeUser @2 (user: User);
+
+        struct AddUserError {
+            enum AddUserError {
+                alreadyExists @0;
+                # An user with that username already exists
+                usernameInvalid @1;
+                # The provided username is unusable, e.g. contains invalid characters,
+                # is too long or too short.
+            }
+            error @0 :AddUserError;
+        }
+    	addUserFallible @3 (username :Text, password: Text) -> Fallible(User, AddUserError);
 	}
 }