PEP 304 lives on :) (#673)

pep-0304.txt

@@ -9,6 +9,21 @@ Content-Type: text/x-rst
 Created: 22-Jan-2003
 Post-History: 27-Jan-2003, 31-Jan-2003, 17-Jun-2005
 
+Historical Note
+===============
+
+While this original PEP was withdrawn, a variant of this feature
+was eventually implemented for Python 3.8 in https://bugs.python.org/issue33499
+
+Several of the issues and concerns originally raised in this PEP were resolved
+by other changes in the intervening years:
+
+- the introduction of isolated mode to handle potential security concerns
+- the switch to ``importlib``, a fully import-hook based import system implementation
+- PEP 3147's change in the bytecode cache layout to use ``__pycache__``
+  subdirectories, including the ``source_to_cache(path)`` and
+  ``cache_to_source(path)`` APIs that allow the interpreter to automatically
+  handle the redirection to a separate cache directory
 
 Abstract
 ========