René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Can't install matplotlib with pip for Python 3.8b4","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nPip fails to install matplotlib for Python 3.8b4.\r\n\r\n**Code for reproduction**\r\n\r\n```\r\npip install matplotlib\r\nOR\r\npython -m pip install -U matplotlib\r\n```\r\n\r\n**Actual outcome**\r\n\r\n```\r\n ERROR: Command errored out with exit status 1:\r\n     command: 'c:\\users\\florian\\pycharmprojects\\mcs\\venv\\scripts\\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '\"'\"'C:\\\\Users\\\\Florian\\\\AppData\\\\Local\\\\Temp\\\\pip-install-uogjuha9\\\\matplotlib\\\\setup.py'\"'\"'; __file__='\"'\"'C:\\\\Users\\\\Florian\\\\AppData\\\\Local\\\\Temp\\\\pip-install-uogjuha9\\\\matplotlib\\\\setup.py'\"'\"';f=getattr(tokenize, '\"'\"'open'\"'\"', open)(__file__);code=f.read().replace('\"'\"'\\r\\n'\"'\"', '\"'\"'\\n'\"'\"');f.close();exec(compile(code, __file__, '\"'\"'exec'\"'\"'))' egg_info --egg-base pip-egg-info\r\n         cwd: C:\\Users\\Florian\\AppData\\Local\\Temp\\pip-install-uogjuha9\\matplotlib\\\r\n    Complete output (101 lines):\r\n    Traceback (most recent call last):\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 154, in save_modules\r\n        yield saved\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 195, in setup_context\r\n        yield\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 248, in run_setup\r\n        with DirectorySandbox(setup_dir):\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 399, in __init__\r\n        self._exceptions = [\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 400, in \u003clistcomp\u003e\r\n        os.path.normcase(os.path.realpath(path))\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\ntpath.py\", line 592, in realpath\r\n        path = _getfinalpathname_nonstrict(path)\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\ntpath.py\", line 566, in _getfinalpathname_nonstrict\r\n        path = _readlink_deep(path, seen)\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\ntpath.py\", line 536, in _readlink_deep\r\n        path = _nt_readlink(path)\r\n    OSError: [WinError 1] Fonction incorrecte: 'nul'\r\n\r\n    During handling of the above exception, another exception occurred:\r\n\r\n    Traceback (most recent call last):\r\n      File \"\u003cstring\u003e\", line 1, in \u003cmodule\u003e\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Temp\\pip-install-uogjuha9\\matplotlib\\setup.py\", line 262, in \u003cmodule\u003e\r\n        setup(\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\__init__.py\", line 144, in setup\r\n        _install_setup_requires(attrs)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\__init__.py\", line 139, in _install_setup_requires\r\n        dist.fetch_build_eggs(dist.setup_requires)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\dist.py\", line 716, in fetch_build_eggs\r\n        resolved_dists = pkg_resources.working_set.resolve(\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\pkg_resources\\__init__.py\", line 780, in resolve\r\n        dist = best[req.key] = env.best_match(\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\pkg_resources\\__init__.py\", line 1065, in best_match\r\n        return self.obtain(req, installer)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\pkg_resources\\__init__.py\", line 1077, in obtain\r\n        return installer(requirement)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\dist.py\", line 786, in fetch_build_egg\r\n        return cmd.easy_install(req)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\command\\easy_install.py\", line 679, in easy_install\r\n        return self.install_item(spec, dist.location, tmpdir, deps)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\command\\easy_install.py\", line 705, in install_item\r\n        dists = self.install_eggs(spec, download, tmpdir)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\command\\easy_install.py\", line 890, in install_eggs\r\n        return self.build_and_install(setup_script, setup_base)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\command\\easy_install.py\", line 1158, in build_and_install\r\n        self.run_setup(setup_script, setup_base, args)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\command\\easy_install.py\", line 1144, in run_setup\r\n        run_setup(setup_script, args)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 253, in run_setup\r\n        raise\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\contextlib.py\", line 131, in __exit__\r\n        self.gen.throw(type, value, traceback)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 195, in setup_context\r\n        yield\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\contextlib.py\", line 131, in __exit__\r\n        self.gen.throw(type, value, traceback)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 166, in save_modules\r\n        saved_exc.resume()\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 141, in resume\r\n        six.reraise(type, exc, self._tb)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\_vendor\\six.py\", line 685, in reraise\r\n        raise value.with_traceback(tb)\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 154, in save_modules\r\n        yield saved\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 195, in setup_context\r\n        yield\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 248, in run_setup\r\n        with DirectorySandbox(setup_dir):\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 399, in __init__\r\n        self._exceptions = [\r\n      File \"c:\\users\\florian\\pycharmprojects\\mcs\\venv\\lib\\site-packages\\setuptools\\sandbox.py\", line 400, in \u003clistcomp\u003e\r\n        os.path.normcase(os.path.realpath(path))\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\ntpath.py\", line 592, in realpath\r\n        path = _getfinalpathname_nonstrict(path)\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\ntpath.py\", line 566, in _getfinalpathname_nonstrict\r\n        path = _readlink_deep(path, seen)\r\n      File \"C:\\Users\\Florian\\AppData\\Local\\Programs\\Python\\Python38\\lib\\ntpath.py\", line 536, in _readlink_deep\r\n        path = _nt_readlink(path)\r\n    OSError: [Errno 22] Fonction incorrecte: 'nul'\r\n    ================================================================================\r\n    Edit setup.cfg to change the build options\r\n\r\n    BUILDING MATPLOTLIB\r\n      matplotlib: yes [3.1.1]\r\n          python: yes [3.8.0b4 (tags/v3.8.0b4:d93605d, Aug 29 2019, 23:21:28) [MSC\r\n                      v.1916 64 bit (AMD64)]]\r\n        platform: yes [win32]\r\n\r\n    OPTIONAL SUBPACKAGES\r\n     sample_data: yes [installing]\r\n           tests: no  [skipping due to configuration]\r\n\r\n    OPTIONAL BACKEND EXTENSIONS\r\n             agg: yes [installing]\r\n           tkagg: yes [installing; run-time loading from Python Tcl/Tk]\r\n          macosx: no  [Mac OS-X only]\r\n\r\n    OPTIONAL PACKAGE DATA\r\n            dlls: no  [skipping due to configuration]\r\n\r\n    ----------------------------------------\r\nERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.\r\n```\r\n\r\n**Expected outcome**\r\n\r\n`matplotlib was successfully installed`\r\n\r\n**Matplotlib version**\r\n  * Operating system: Windows 10\r\n  * Matplotlib version: Trying to install 3.1.1\r\n  * Matplotlib backend: Not applicable\r\n  * Python version: 3.8b4\r\n  * Jupyter version (if applicable): Not applicable\r\n  * Other libraries: None\r\nI'm on a virtualenv if this matters.","author":{"url":"https://github.com/TheMrZZ","@type":"Person","name":"TheMrZZ"},"datePublished":"2019-09-18T16:00:00.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/15295/matplotlib/issues/15295"}