Add reuse headers to `shell.nix` and `.buildkite/pipeline.yml`

1 files changed, 4 insertions, 0 deletions

diff --git a/shell.nix b/shell.nix
index 9eb132a..e858b2e 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2020 Serokell <https://serokell.io/>
+#
+# SPDX-License-Identifier: MPL-2.0
+
 (import
   (
     let