The Cython-generated C++ source file is quite large (about 500K uncompressed, when everything else in the bdist is under 200K on x86_64), and is not really useful at runtime. On x86_64, this change shrinks the compressed .whl file from 131K to 59K.

What do these changes do?

Exclude *.cpp files from binary distributions such as wheels: specifically, this affects _frozenlist.cpp, which is generated by Cython from _frozenlist.pyx. The .pyx file is still included in the wheels.

Are there changes in behavior for the user?

The .cpp file is not used at runtime, and even for debugging the .pyx file should be much more useful, since the .cpp file is dense, verbose, generated code.

Related issue number

N/A

Checklist

• I think the code is well written
• Unit tests for the changes exist N/A
• Documentation reflects the changes N/A, I think
• If you provide code modifications, please add yourself to CONTRIBUTORS.txt N/A, too trivial
  • The format is <Name> <Surname>.
  • Please keep the list in alphabetical order, the file is sorted by name.
• Add a new news fragment into the CHANGES folder
  • name it <issue_id>.<type> for example (588.bugfix)
  • if you don't have an issue_id change it to the pr id after creating the pr
  • ensure type is one of the following:
    • .feature: Signifying a new feature.
    • .bugfix: Signifying a bug fix.
    • .doc: Signifying a documentation improvement.
    • .removal: Signifying a deprecation or removal of public API.
    • .misc: A ticket has been closed, but it is not of interest to users.
  • Make sure to use full sentences with correct case and punctuation, for example: "Fix issue with non-ascii contents in doctest text files."