From 3afb0a34dc0b438a0535eadb4281134d7074a7b2 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Thu, 28 Apr 2022 13:12:48 +0100
Subject: [PATCH] Try that again

---
 roomserver/internal/perform/perform_admin.go | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/roomserver/internal/perform/perform_admin.go b/roomserver/internal/perform/perform_admin.go
index 10938fd86..aa0006489 100644
--- a/roomserver/internal/perform/perform_admin.go
+++ b/roomserver/internal/perform/perform_admin.go
@@ -77,15 +77,8 @@ func (r *Admin) PerformAdminEvacuateRoom(
 	}
 
 	inputEvents := make([]api.InputRoomEvent, 0, len(memberEvents))
-
 	latestReq := &api.QueryLatestEventsAndStateRequest{
 		RoomID: req.RoomID,
-		StateToFetch: []gomatrixserverlib.StateKeyTuple{
-			{
-				EventType: "m.room.create",
-				StateKey:  "",
-			},
-		},
 	}
 	latestRes := &api.QueryLatestEventsAndStateResponse{}
 	if err = r.Queryer.QueryLatestEventsAndState(ctx, latestReq, latestRes); err != nil {
@@ -127,7 +120,16 @@ func (r *Admin) PerformAdminEvacuateRoom(
 			return
 		}
 
-		event, err := eventutil.BuildEvent(ctx, fledglingEvent, r.Cfg.Matrix, time.Now(), nil, latestRes)
+		eventsNeeded, err := gomatrixserverlib.StateNeededForEventBuilder(fledglingEvent)
+		if err != nil {
+			res.Error = &api.PerformError{
+				Code: api.PerformErrorBadRequest,
+				Msg:  fmt.Sprintf("gomatrixserverlib.StateNeededForEventBuilder: %s", err),
+			}
+			return
+		}
+
+		event, err := eventutil.BuildEvent(ctx, fledglingEvent, r.Cfg.Matrix, time.Now(), &eventsNeeded, latestRes)
 		if err != nil {
 			res.Error = &api.PerformError{
 				Code: api.PerformErrorBadRequest,