From Newsgroup: comp.lang.python.announce

A new SCons release, 4.5.2, is now available on the SCons download page:

https://scons.org/pages/download.html

Here is a summary of the changes since 4.5.1:

FIXES
-----

- Fix a problem (#4321) in 4.5.0/4.5.1 where ParseConfig could cause an
exception in MergeFlags when the result would be to add preprocessor
defines to existing CPPDEFINES. The following code illustrates the
circumstances that could trigger this:
env=Environment(CPPDEFINES=['a'])
env.Append(CPPDEFINES=['b'])
env.MergeFlags({'CPPDEFINES': 'c'})

PACKAGING
---------

- Remove the redundant `wheel` dependency from `pyproject.toml`,
as it is added automatically by the setuptools PEP517 backend.


Thanks to the following contributors listed below for their contributions
to this release. ==========================================================================================
.. code-block:: text

git shortlog --no-merges -ns 4.5.1..HEAD
3 Mats Wichmann
2 William Deegan
1 Michał Górny
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