treewide: Add nice GPL-3.0-or-later license header

This change also ensures that this repo is reuse-3.0 compliant.

1 files changed, 31 insertions, 0 deletions

diff --git a/.reuse/templates/default.jinja2 b/.reuse/templates/default.jinja2
new file mode 100644
index 00000000..17499ae1
--- /dev/null
+++ b/.reuse/templates/default.jinja2
@@ -0,0 +1,31 @@
+{#
+nixos-config - My current NixOS configuration
+
+Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+SPDX-License-Identifier: GPL-3.0-or-later
+
+This file is part of my nixos-config.
+
+You should have received a copy of the License along with this program.
+If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
+#}
+
+nixos-config - My current NixOS configuration
+
+{% for copyright_line in copyright_lines %}
+{{ copyright_line }}
+{% endfor %}
+{% for contributor_line in contributor_lines %}
+SPDX-FileContributor: {{ contributor_line }}
+{% endfor %}
+{% for expression in spdx_expressions %}
+SPDX-License-Identifier: {{ expression }}
+{% endfor %}
+
+This file is part of my nixos-config.
+
+You should have received a copy of the License along with this program.
+If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
+{#
+    vim: ft=htmldjango
+#}