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


Here is a summary of the changes since 4.5.1:


-  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.MergeFlags({'CPPDEFINES': 'c'})


- 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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