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+# PyBind11: Third-Party Dependency for UHD
+
+Version: 25abf7ef (post-2.2.4)
+
+PyBind11 is a replacement for Boost.Python. Unlike Boost.Python, however, we
+ship it with the UHD repository instead of relying on it to be there external to
+the repository. The main reason for this is that PyBind11 is not packaged with
+most distributions at this time. It also allows us to lock down the version of
+PyBind11 used; with Boost, we often have to apply hacks to make sure UHD works
+across all of the Boost versions that we support.
+
+## License for PyBind11
+
+As a seperate, third-party project, PyBind11 has a different license from UHD.
+See the LICENSE file in the same directory as this readme. PyBind11 has a
+3-clause BSD-style license.
+
+## Importing into UHD
+
+In order to copy PyBind11 into UHD, only the `include/` subdirectory from the
+PyBind11 repository was copied into UHD.
+To save space, all comments were stripped from PyBind11 source files, except for
+the copyright header, using the `remove_comments.py` script.