Mailman 3 November 2022 - pypy-dev

Re: Injecting an exception into another thread
by Audrey Dutcher 10 May '23

10 May '23

Hi! Sorry for the delay, I didn't realize I needed to be subscribed to the mailing list to participate in conversations. My use case is that I have a gui application which runs arbitrary tasks as background threads, and needs to provide a cancel button to interrupt them. The tasks are often legacy code and/or are very difficult to find reasonable points to insert checks for interruption. Another use case would be implementing a python shell in a gui. If you want to maintain responsiveness while commands execute, they must be able to run in another thread (or another process, but this is not ideal if the shell is supposed to interact with the internals of your application). Interrupting lines with ctrl-c requires being able to send an exception to worker threads. Hope this helps! Thanks, - Audrey

3 2

PyPy Winter Sprint + cpyext
by Stefan Beyer 21 Dec '22

21 Dec '22

Hey everyone! Those of you who attended or followed one of the last two winter sprints in Leysin might know me, the others probably won't. I'm (still) a Master's student writing my thesis on PyPy's current issue with cross-heap cycles when using cpyext. The main point is, that they are not collected and stay around as floating garbage, even if they are not reachable any more. Correct me if I'm wrong, but I didn't notice anyone else working on that topic (and/or committing something) since I've picked it up two years ago (yeah, I know, that long ago...). I saw that you would be working on "cpyext performance and completeness" during the current winter sprint this week and thought that this might also concern my thesis. So I thought I'll give you an update. I recently pushed my current (non-optimized, breaking-some-tests, but more or less working) implementation of the "CPython-style" GC-extension for cpyext. It is still in an early stage and not all cases (legacy and non-legacy-finalizers, weakrefs) are handled. However, I picked up some pace during the last couple of weeks and I'm determined to finish this implementation during the following weeks (some quirks with the tests have been haunting me, but I think I figured most of them out by now). After that, I will implement a second alternative implementation (to compare to, mostly for the sake of my thesis), which will take some more time. I also added a couple of fancy test cases (the so called "dot-tests"), so that we can test complex object graphs a little bit easier (and also because it was kind of cool to have another language inside PyPy/RPython, even if it was only for the tests...), with more test cases to come (the current ones are a bit messy). None of the new changes concerning low-latency applications are currently integrated, but that should not be too hard. I guess it won't make much sense for me to join you at this year's winter sprint, especially as I won't be able to get there before Thursday, but I might be able to join you over the IRC channel (or some other form of communication if you like). If there is anything that is worth discussing please let me know! Also feel free to comment on my code, but beware that I might change some things once I try to do some optimizations (probably not many, but at least fix the worst issues) and make it a little bit more readable. You can find my code on the cpyext-gc-cycle branch.<https://bitbucket.org/pypy/pypy/commits/branch/cpyext-gc-cycle> Looking forward to hearing from you! Greetings, Stefan

2 2

PyPy v7.3.10 release candidate available
by Matti Picus 24 Nov '22

24 Nov '22

I have uploaded 3 versions of python: 2.7, 3.8, 3.9 (no longer beta quality) as the first release candidate of PyPy7.3.10. They are named rc3 because I made mistakes when tagging the repo and did not want to change the tags. Release note: https://doc.pypy.org/en/latest/release-v7.3.10.html Downloads: https://downloads.python.org/pypy/ checksums: https://www.pypy.org/checksums.html As soon as the CDN network updates the https://downloads.python.org/pypy/versions.json file, you can use them in github actions CI. Highlights from the release notes: - A release of Apple Silicon M1 arm64 versions. This work was sponsored by an anonymous donor and is tested on our buildbots. - Many improvements to the basic interpreter to make it faster - The conda-forge community has built over 1000 packages for PyPy3.8 and 3.9, making it easier than ever to use PyPy. - Update the packaged OpenSSL to 1.1.1s and apply applicable secruity fixes from CPython 3.9.15 to PyPy2.7 - Update the HPy backend in PyPy3.8 and PyPY3.9 to 0.0.4 Please try these out and report any problems. Matti

1 0

Python Help Regarding lxml Installation
by Maria K 13 Nov '22

13 Nov '22

Hello, I am getting started with Python and I got stuck in installing lxml So I typed pip install lxml and I get the below error. Can you tell me what do I have to install and where to find it? Some library? libxml2 or another? Some Microsoft C++ 14 Component? I tried these things without success. Do you know an exact solution? Maybe I need to install something else with pip that consists dependant? Do I need to build lxml, but how to build it? Thanks pip install lxml Collecting lxml Using cached lxml-4.9.1.tar.gz (3.4 MB) Preparing metadata (setup.py) ... done Building wheels for collected packages: lxml Building wheel for lxml (setup.py) ... error error: subprocess-exited-with-error × python setup.py bdist_wheel did not run successfully. │ exit code: 1 ╰─> [94 lines of output] Building lxml version 4.9.1. Building without Cython. Building against pre-built libxml2 andl libxslt libraries running bdist_wheel running build running build_py creating build creating build\lib.win-amd64-cpython-311 creating build\lib.win-amd64-cpython-311\lxml copying src\lxml\builder.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\cssselect.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\doctestcompare.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\ElementInclude.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\pyclasslookup.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\sax.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\usedoctest.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\_elementpath.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\__init__.py -> build\lib.win-amd64-cpython-311\lxml creating build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\__init__.py -> build\lib.win-amd64-cpython-311\lxml\includes creating build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\builder.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\clean.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\defs.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\diff.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\ElementSoup.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\formfill.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\html5parser.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\soupparser.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\usedoctest.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\_diffcommand.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\_html5builder.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\_setmixin.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\__init__.py -> build\lib.win-amd64-cpython-311\lxml\html creating build\lib.win-amd64-cpython-311\lxml\isoschematron copying src\lxml\isoschematron\__init__.py -> build\lib.win-amd64-cpython-311\lxml\isoschematron copying src\lxml\etree.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\etree_api.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\lxml.etree.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\lxml.etree_api.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\includes\c14n.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\config.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\dtdvalid.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\etreepublic.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\htmlparser.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\relaxng.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\schematron.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\tree.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\uri.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xinclude.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xmlerror.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xmlparser.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xmlschema.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xpath.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xslt.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\__init__.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\etree_defs.h -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\lxml-version.h -> build\lib.win-amd64-cpython-311\lxml\includes creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\rng copying src\lxml\isoschematron\resources\rng\iso-schematron.rng -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\rng creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl copying src\lxml\isoschematron\resources\xsl\RNG2Schtrn.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl copying src\lxml\isoschematron\resources\xsl\XSD2Schtrn.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_abstract_expand.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_dsdl_include.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_message.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_skeleton_for_xslt1.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_svrl_for_xslt1.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 running build_ext building 'lxml.etree' extension creating build\temp.win-amd64-cpython-311 creating build\temp.win-amd64-cpython-311\Release creating build\temp.win-amd64-cpython-311\Release\src creating build\temp.win-amd64-cpython-311\Release\src\lxml "C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -DCYTHON_CLINE_IN_TRACEBACK=0 -Isrc -Isrc\lxml\includes -IC:\Users\Universum\AppData\Local\Programs\Python\Python311\include -IC:\Users\Universum\AppData\Local\Programs\Python\Python311\Include "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\VS\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.22621.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\cppwinrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" /Tcsrc\lxml\etree.c /Fobuild\temp.win-amd64-cpython-311\Release\src\lxml\etree.obj -w cl : Command line warning D9025 : overriding '/W3' with '/w' etree.c C:\Users\Universum\AppData\Local\Temp\pip-install-0wyuaomy\lxml_c6a04d4318ec40639f1b22fcf30829c0\src\lxml\includes/etree_defs.h(14): fatal error C1083: Cannot open include file: 'libxml/xmlversion.h': No such file or directory Compile failed: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Tools\\MSVC\\14.34.31933\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2 creating Users creating Users\UNIVER~1 creating Users\UNIVER~1\AppData creating Users\UNIVER~1\AppData\Local creating Users\UNIVER~1\AppData\Local\Temp "C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -I/usr/include/libxml2 "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\VS\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.22621.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\cppwinrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" /TcC:\Users\UNIVER~1\AppData\Local\Temp\xmlXPathInitkexz0g8y.c /FoUsers\UNIVER~1\AppData\Local\Temp\xmlXPathInitkexz0g8y.obj xmlXPathInitkexz0g8y.c C:\Users\UNIVER~1\AppData\Local\Temp\xmlXPathInitkexz0g8y.c(1): fatal error C1083: Cannot open include file: 'libxml/xpath.h': No such file or directory error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Tools\\MSVC\\14.34.31933\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2 ********************************************************************************* Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed? ********************************************************************************* [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. ERROR: Failed building wheel for lxml Running setup.py clean for lxml Failed to build lxml Installing collected packages: lxml Running setup.py install for lxml ... error error: subprocess-exited-with-error × Running setup.py install for lxml did not run successfully. │ exit code: 1 ╰─> [91 lines of output] Building lxml version 4.9.1. Building without Cython. Building against pre-built libxml2 andl libxslt libraries running install C:\Users\Universum\AppData\Local\Programs\Python\Python311\Lib\site-packages\setuptools\command\install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools. warnings.warn( running build running build_py creating build creating build\lib.win-amd64-cpython-311 creating build\lib.win-amd64-cpython-311\lxml copying src\lxml\builder.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\cssselect.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\doctestcompare.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\ElementInclude.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\pyclasslookup.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\sax.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\usedoctest.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\_elementpath.py -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\__init__.py -> build\lib.win-amd64-cpython-311\lxml creating build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\__init__.py -> build\lib.win-amd64-cpython-311\lxml\includes creating build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\builder.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\clean.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\defs.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\diff.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\ElementSoup.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\formfill.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\html5parser.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\soupparser.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\usedoctest.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\_diffcommand.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\_html5builder.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\_setmixin.py -> build\lib.win-amd64-cpython-311\lxml\html copying src\lxml\html\__init__.py -> build\lib.win-amd64-cpython-311\lxml\html creating build\lib.win-amd64-cpython-311\lxml\isoschematron copying src\lxml\isoschematron\__init__.py -> build\lib.win-amd64-cpython-311\lxml\isoschematron copying src\lxml\etree.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\etree_api.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\lxml.etree.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\lxml.etree_api.h -> build\lib.win-amd64-cpython-311\lxml copying src\lxml\includes\c14n.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\config.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\dtdvalid.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\etreepublic.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\htmlparser.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\relaxng.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\schematron.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\tree.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\uri.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xinclude.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xmlerror.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xmlparser.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xmlschema.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xpath.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\xslt.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\__init__.pxd -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\etree_defs.h -> build\lib.win-amd64-cpython-311\lxml\includes copying src\lxml\includes\lxml-version.h -> build\lib.win-amd64-cpython-311\lxml\includes creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\rng copying src\lxml\isoschematron\resources\rng\iso-schematron.rng -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\rng creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl copying src\lxml\isoschematron\resources\xsl\RNG2Schtrn.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl copying src\lxml\isoschematron\resources\xsl\XSD2Schtrn.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl creating build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_abstract_expand.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_dsdl_include.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_message.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_skeleton_for_xslt1.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_svrl_for_xslt1.xsl -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt -> build\lib.win-amd64-cpython-311\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 running build_ext building 'lxml.etree' extension creating build\temp.win-amd64-cpython-311 creating build\temp.win-amd64-cpython-311\Release creating build\temp.win-amd64-cpython-311\Release\src creating build\temp.win-amd64-cpython-311\Release\src\lxml "C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -DCYTHON_CLINE_IN_TRACEBACK=0 -Isrc -Isrc\lxml\includes -IC:\Users\Universum\AppData\Local\Programs\Python\Python311\include -IC:\Users\Universum\AppData\Local\Programs\Python\Python311\Include "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\VS\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.22621.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\cppwinrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" /Tcsrc\lxml\etree.c /Fobuild\temp.win-amd64-cpython-311\Release\src\lxml\etree.obj -w cl : Command line warning D9025 : overriding '/W3' with '/w' etree.c C:\Users\Universum\AppData\Local\Temp\pip-install-0wyuaomy\lxml_c6a04d4318ec40639f1b22fcf30829c0\src\lxml\includes/etree_defs.h(14): fatal error C1083: Cannot open include file: 'libxml/xmlversion.h': No such file or directory Compile failed: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Tools\\MSVC\\14.34.31933\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2 "C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -I/usr/include/libxml2 "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\MSVC\14.34.31933\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\VS\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.22621.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.22621.0\\cppwinrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" /TcC:\Users\UNIVER~1\AppData\Local\Temp\xmlXPathInitnfadutnq.c /FoUsers\UNIVER~1\AppData\Local\Temp\xmlXPathInitnfadutnq.obj xmlXPathInitnfadutnq.c C:\Users\UNIVER~1\AppData\Local\Temp\xmlXPathInitnfadutnq.c(1): fatal error C1083: Cannot open include file: 'libxml/xpath.h': No such file or directory error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Tools\\MSVC\\14.34.31933\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2 ********************************************************************************* Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed? ********************************************************************************* [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: legacy-install-failure × Encountered error while trying to install package. ╰─> lxml note: This is an issue with the package mentioned above, not pip. hint: See above for output from the failure.

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Compatibility with Quickfix
by geokas7＠hotmail.com 02 Nov '22

02 Nov '22

Hello, I tried to install Quickfix under pypy with the following code: pip3 install quickfix The installation was failed. The error contains the following error : C++/QuickfixPython.cpp: In function ‘PyTypeObject* SwigPyPacked_TypeOnce()’: C++/QuickfixPython.cpp:2132:7: error: invalid conversion from ‘printfunc {aka int ()(_object, _IO_FILE, int)}’ to ‘Py_ssize_t {aka long int}’ [-fpermissive] I would like to inform me if quickfix is compatible with pypy and if you could provide us a solution. Best, George

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