Why is the compiler package discontinued in Python 3?

I believe the functionality is now built in:

• compile
• ast

To provide specific references to the decision trail:

• https://mail.python.org/pipermail/python-3000/2007-May/007577.html
• PEP 3108

And, for what it's worth, I started Python3 port of the compiler package, to be maintained outside of the stdlib:

• https://github.com/pfalcon/python-compiler
• https://pypi.org/project/python-compiler/