From f62576d88df0adfe00e513809756cd530ead96c2 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sat, 17 Apr 2021 20:24:39 +0900
Subject: [PATCH] internal/glfw: Add tools.go to keep go.sum

---
 internal/glfw/tools.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 internal/glfw/tools.go

diff --git a/internal/glfw/tools.go b/internal/glfw/tools.go
new file mode 100644
index 000000000..636a3b021
--- /dev/null
+++ b/internal/glfw/tools.go
@@ -0,0 +1,22 @@
+// Copyright 2021 The Ebiten Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build tools
+
+package glfw
+
+import (
+	// Used in gen.go
+	"golang.org/x/sync/errgroup"
+)