docs: clarify LGPL-2.1-or-later license in README

bluetoothbot · bluetoothbot · commit fe02c56a2938 · 2026-05-20T16:52:49.000Z
The COPYING file ships the verbatim text of LGPL 2.1, while the
package metadata in pyproject.toml declares the SPDX identifier
LGPL-2.1-or-later. License-detection tools that read pyproject.toml
report the project as 'or later', but the README only said 'LGPL,
see COPYING file for details', leaving downstream consumers unsure
which version applies.

State the 'or later' grant explicitly in the README so the README,
COPYING, and pyproject.toml agree on a single, machine- and
human-readable answer.
diff --git a/README.rst b/README.rst
@@ -151,4 +151,10 @@ Changelog
 License
 =======
 
-LGPL, see COPYING file for details.
+GNU Lesser General Public License v2.1 or later (LGPL-2.1-or-later).
+
+The full text of LGPL 2.1 is included in the `COPYING <COPYING>`_ file.
+You may, at your option, use this library under the terms of any later
+version of the LGPL published by the Free Software Foundation. The
+canonical SPDX identifier for this project is ``LGPL-2.1-or-later``, as
+declared in ``pyproject.toml``.
