Make file headers compliant with REUSE 3.0

This commit edits all the source files in detray (sorry reviewers) in
order to make the header files compliant with the REUSE 3.0
specification, which also means we no longer need to update the years in
the headers all the time.

Author: stephenswat

.clang-format

@@ -1,3 +1,7 @@
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
+
 ---
 BasedOnStyle: Google
 IndentWidth: 4

.github/check_format.sh

@@ -1,4 +1,9 @@
 #!/bin/bash
+
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
+
 #
 # check that all code complies w/ the clang-format specification
 #

.github/ci_setup.sh

@@ -1,8 +1,7 @@
-# Detray library, part of the ACTS project (R&D line)
-#
-# (c) 2022 CERN for the benefit of the ACTS project
-#
-# Mozilla Public License Version 2.0
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
+
 #
 # This script is meant to configure the build/runtime environment of the
 # Docker contaners that are used in the project's CI configuration.

.github/find_f64_ptx.py

@@ -1,12 +1,8 @@
 #!/bin/python3
 
-
-# TRACCC library, part of the ACTS project (R&D line)
-#
-# (c) 2023 CERN for the benefit of the ACTS project
-#
-# Mozilla Public License Version 2.0
-
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
 
 import argparse
 import re

.github/workflows/benchmarks.yml

@@ -1,8 +1,6 @@
-# Detray library, part of the ACTS project (R&D line)
-#
-# (c) 2024 CERN for the benefit of the ACTS project
-#
-# Mozilla Public License Version 2.0
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
 
 name: Benchmarks
 

.github/workflows/builds.yml

@@ -1,3 +1,7 @@
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
+
 name: Builds
 
 on:

.github/workflows/checks.yml

@@ -1,3 +1,7 @@
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
+
 name: Checks
 
 # Cancel existing jobs on new pushes.

.gitignore

@@ -1,3 +1,7 @@
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
+
 # data files
 /data/*.csv
 /data/*.cvf

.gitlab-ci.yml

@@ -1,8 +1,6 @@
-# Detray library, part of the ACTS project (R&D line)
-#
-# (c) 2021-2024 CERN for the benefit of the ACTS project
-#
-# Mozilla Public License Version 2.0
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
 
 stages:
   - build

.pre-commit-config.yaml

@@ -1,3 +1,7 @@
+# SPDX-PackageName: "detray, a part of the ACTS project"
+# SPDX-FileCopyrightText: 2021 CERN
+# SPDX-License-Identifier: MPL-2.0
+
 repos:
   - repo: https://github.com/pre-commit/mirrors-clang-format
     rev: 'v10.0.1'
@@ -35,3 +39,8 @@ repos:
       name: Leftover conflict markers
       language: system
       entry: git --no-pager diff --staged --check
+
+  - repo: https://github.com/fsfe/reuse-tool
+    rev: v5.0.2
+    hooks:
+    - id: reuse