chore(treewide): Add License via reuse

1 files changed, 9 insertions, 0 deletions

diff --git a/treefmt.nix b/treefmt.nix
index 1cbab40..292902b 100644
--- a/treefmt.nix
+++ b/treefmt.nix
@@ -1,3 +1,12 @@
+# pgp-wkd - A web key directory for pgp-keys
+#
+# Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+# SPDX-License-Identifier: CC-BY-SA-4.0
+#
+# This file is part of pgp-wkd.
+#
+# You should have received a copy of the License along with this program.
+# If not, see <https://creativecommons.org/licenses/by-sa/4.0/legalcode.txt>.
 {
   treefmt-nix,
   pkgs,