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Description
Bug report
Bug summary
Matplotlib errors on installation on Python 3.9 on macOS Catalina.
Code for reproduction
In a fresh directory, with an empty pip cache (~/Library/Caches/pip
)
mkvirtualenv --python=`which python3` testmpl
pip install matplotlib
Actual outcome
Installation fails with
ERROR: Command errored out with exit status 1:
command: /Users/Orome/Documents/Projects/Coding/Python/venvs/testmpl/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/b6/3rk65h797p7407x7d36sqn9c0000gn/T/pip-install-4lxqi3sx/matplotlib/setup.py'"'"'; __file__='"'"'/private/var/folders/b6/3rk65h797p7407x7d36sqn9c0000gn/T/pip-install-4lxqi3sx/matplotlib/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/b6/3rk65h797p7407x7d36sqn9c0000gn/T/pip-wheel-r8ksc5eb
cwd: /private/var/folders/b6/3rk65h797p7407x7d36sqn9c0000gn/T/pip-install-4lxqi3sx/matplotlib/
Complete output (17183 lines):
...
ERROR: Command errored out with exit status 1: /Users/Orome/Documents/Projects/Coding/Python/venvs/testmpl/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/b6/3rk65h797p7407x7d36sqn9c0000gn/T/pip-install-4lxqi3sx/matplotlib/setup.py'"'"'; __file__='"'"'/private/var/folders/b6/3rk65h797p7407x7d36sqn9c0000gn/T/pip-install-4lxqi3sx/matplotlib/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/b6/3rk65h797p7407x7d36sqn9c0000gn/T/pip-record-_pg93m6w/install-record.txt --single-version-externally-managed --compile --install-headers /Users/Orome/Documents/Projects/Coding/Python/venvs/testmpl/include/site/python3.9/matplotlib Check the logs for full command output.
Complete output here.
Expected outcome
Expected same behavior as with Python 3.8, which results in a successful installation.
Matplotlib version
Matplotlib: 3.3.2
Python: 3.9.0 (Homebrew in ~/Users/Roy/Documents/Projects/Coding/Python/venvs/testmpl/bin/)
Clang: 12.0 build 1200
macOS: 10.15.7-x86_64
CLT: 12.1.0.0.1.1602137645
Xcode: 12.1
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