chore: Add missing copyright headers to source files

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/nixery/popcount/popcount.go b/tools/nixery/popcount/popcount.go
index a37408e37f..bc5f42af8a 100644
--- a/tools/nixery/popcount/popcount.go
+++ b/tools/nixery/popcount/popcount.go
@@ -1,3 +1,17 @@
+// Copyright 2019 Google LLC
+//
+// 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
+//
+//     https://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.
+
 // Popcount fetches popularity information for each store path in a
 // given Nix channel from the upstream binary cache.
 //