python-devel June 2021

python-devel@lists.fedoraproject.org

15 participants
18 discussions

package request: PyWaffle
by Matthew Miller 20 Dec '21

20 Dec '21

Hi! I'm using this https://github.com/gyli/PyWaffle for some visualizations for Fedora Project stats. I'm kind of out of the loop on the state of the art of python packaging, and wondered if some kind Python SIG person would like to take it on for me.

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Macro to smoke-test-import a Python module in %check
by Miro Hrončok 05 Aug '21

05 Aug '21

Hello Python RPM packagers, based on some discussion in the "F35 Change: Python Packaging Guidelines overhaul (System-Wide Change proposal)" thread [0], I've drafted a macro that can help to test-import a Python module in %check when no other tests exist or are when they cannot be executed during build [1]. The semantics is quite simple: %check %py3_check_import mymodule mymodule.submodule When all listed modules are successfully imported, "nothing happens", when at lest one fails to import, the entire build fails. The above line is translated very-roughly to `python3 -c 'import mymodule, mymodule.submodule'` (see the implementation [0] for more accurate representation). Given the Python semantics, it is possible to use commas as module separators as well (but no parentheses). The %buildroot's %pythn3_site{lib,arch} is added to PYTHONPATH. The runtime dependencies are obviously needed for this to work, so they need to be manually BuildRequired or even better, generated in %generate_buildrequires via `%pyproject_buildrequires -r` to use this macro. The macro can be used repeatedly when importing multiple modules at once is undesired (e.g. when only one module can be imported from the same Python interpreter): %check %py3_check_import mymodule.either %py3_check_import mymodule.or Before I merge this and backport to all Fedoras and EPELs, I'd like to know: - Do you have better ideas for the macro name? - Do you have better ideas for the macro semantics? [0] https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org… [1] https://src.fedoraproject.org/rpms/python-rpm-macros/pull-request/99 -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

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An unsuccessful case study: Using pyproject-rpm-macros with PyQt-builder and sip 5
by Miro Hrončok 22 Jul '21

22 Jul '21

Hello, since Scott is working on update to sip 5 (thank you!) I've figured this is a good time check if we can use the PyQt-builder Python build backend with our pyproject-rpm-macros. tl;dr It is broken in various ways and I am unsure where to attempt to fix things. ------------- This was my case study: I've used the python-pyqtchart package as a test subject, as it is fairly simple and has an open pull request to port it to sip5 [1]. I've pretty much reconstructed the spec file as I would normally do: %generate_buildrequires %pyproject_buildrequires %build %pyproject_wheel %install %pyproject_install To ease things up, I've kept the non-Python-packages BuilRequires intact, so the package still BuildRequires python3-qt5-devel, qt5-qtcharts-devel and qt5-qtbase-private-devel. I've removed the BuildRequires on python3dist(sip) and python3dist(pyqt-builder) as I've expected those to be generated. The simplified pyproject.toml file looks like this: [build-system] requires = ["sip >=5.3, <7", "PyQt-builder >=1.6, <2"] build-backend = "sipbuild.api" [tool.sip.metadata] name = "PyQtChart" version = "5.15.2" ... requires-dist = "PyQt5 (>=5.15)" [tool.sip] project-factory = "pyqtbuild:PyQtProject" [tool.sip.project] tag-prefix = "QtChart" [tool.sip.bindings.QtChart] qmake-QT = ["charts"] I've also tried with version 5.15.4, but not much is different. I've used the copr with sip5 [2] to build the package. ------------- %pyproject_buildrequires works and generates requirements on python3dist(sip) and python3dist(pyqt-builder) \o/ %pyproject_buildrequires -r doesn't work. It says: ValueError: build backend cannot provide build metadata (incl. runtime requirements) before buld Except for the typo [3], this is the expected behavior for a build backend that does not support the prepare_metadata_for_build_wheel hook. Bummer, but fair. We can RFE PyQt-builder to add that hook. ------------- %pyproject_wheel fails very badly. The traceback is unparseable by humans. It ends with: pip._internal.exceptions.InstallationSubprocessError: Command errored out with exit status 1: ... Check the logs for full command output. I have no idea where are the logs. We might want to improve this in pip. After some digging, I've realized the problem is that PyQt-builder calls "qmake" and that command was not available. I've looked into the code and the "qmake" name is hardcoded, but searched on $PATH. The "original" non-pyproject spec has: sip-build ... --qmake="%{_qt5_qmake}" But there is no (known) way to pass such options to the backend. I was able to make it work by exporting PATH="%{_qt5_bindir}:$PATH". I was wondering whether the Fedora's sip5 (or PyQt-builder) package might change the default to make this work, but maybe there is no reasonable default here, as PyQt-builder is Qt version agnostic. Hence I don't know how to make it work out of the box. Not sure where to improve this experience. Anyway, workaround exists. ------------- During %pyproject_wheel, "make" is called internally by the backend. The build is not parallelized. I was able to workaround this by using MAKEFLAGS='%{?_smp_mflags}'. We might want to set this environment variable to '%{_make_output_sync} %{?_smp_mflags} %{_make_verbose}' in the %pyproject_wheel macro, so any backed that utilizes make gets the default arguments Fedora packages should use. Anyway, this is not a blocker to build the package. ------------- Processing files: python-pyqtchart-debugsource-5.15.4-1.fc35.x86_64 RPM build errors: error: Empty %files file /builddir/build/BUILD/PyQtChart-5.15.4 /debugsourcefiles.list This is a problem I get next. It likely means the build flags are not propagated. Our macros set the CFLAGS and LDFLAGS environment variables, but the build does not respect them. I've tried exporting CXXFLAGS as well, but no dice. Apparently, the build backend does not pass the variables to the build. I've tried a workaround like this: export MAKEFLAGS='%{?_smp_mflags} CPPFLAGS="%{build_cxxflags}"' But it makes the internal make call just dump the targets instead of actually building, so I guess I am doing it wrong. Either way, I think we need to fix PyQt-builder/sip to respect the flags from the environment variables. Funnily enbough, when I break make like this, it creates the wheel anyway, but with no dist-info metadata in it. I guess if users break make by setting wrong MAKEFLAGS, the wheel should not be created at all :/ To move forward, I've used %global debug_package %{nil}, but I consider not using the Fedora's flag a blocker before we recommend the macros for packages that use PyQt-builder. ------------- The next problem I got was: error: File not found: /builddir/build/BUILDROOT/python-pyqtchart-5.15.4-1.fc35.x86_64/usr/share/qt5/qsci/api/python/PyQtChart.api The "original" non-pyproject specfile had: sip-build ... --api-dir=%{_qt5_datadir}/qsci/api/python And as said previously, I don't know a way to pass such options to the backend. I am not skilled enough in Qt and SIP, so I have no idea if we need to ship the .api file or not. But if we need or want to, we should be able to. When the option is not used, the api file is not installed anywhere. I was unable to figure this out yet. ------------- That's it. I don't really know where to fix things, and I'd appreciate some pointers. This is not a very high priority for me right now, but once the new Python guidelines [4] are in place, I think we should make this work, possibly with some reasonable worarounds. [1] https://src.fedoraproject.org/rpms/python-pyqtchart/pull-request/6 [2] https://copr.fedorainfracloud.org/coprs/swt2c/pyqt5-sip5/ [3] https://src.fedoraproject.org/rpms/pyproject-rpm-macros/pull-request/167 [4] https://fedoraproject.org/wiki/Changes/PythonPackagingGuidelines202x -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

4 4

PSA: /usr/lib/rpm/redhat/brp-python-hardlink: No such file or directory [and how to solve it]
by Miro Hrončok 30 Jun '21

30 Jun '21

If you see the following error in a Rawhide mock build: ... + /usr/lib/rpm/redhat/brp-python-hardlink /var/tmp/rpm-tmp.WFxggi: line 65: /usr/lib/rpm/redhat/brp-python-hardlink: No such file or directory error: Bad exit status from /var/tmp/rpm-tmp.WFxggi (%install) Update your mock chroot from the "local" repository: $ mock -r fedora-rawhide-x86_64 --enablerepo=local --update And don't clean it before running the build. If you see the error in Koji, please let me know ASAP. -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

1 1

Intent to retire python2-setuptools
by Miro Hrončok 29 Jun '21

29 Jun '21

Hello Fedorans and especially Pythonistas. I'd like to retire python2-setuptools from Fedora 35+. It contains utilities to execute code downloaded from the internet and it has not been updated for 2 years. It has a potential of a security hole, although I am not currently aware of any. Unfortunately, 6 packages still (Build)Require python2-setuptools in Fedora 35: https://fedora.portingdb.xyz/pkg/python2-setuptools/ I've split them into 3 categories: 1) Trac plugins: trac-(customfieldadmin|monotone|watchlist)-plugin Note: trac-monotone-plugin is the only package that Requires python2-setuptools in Fedora 35 on runtime. Trac has been already updated to Python 3 in Fedora 34+ The plugins don't (and cannot) work with Python 2 when Trac runs on Python 3. Bugzillas exists for years: https://bugzilla.redhat.com/show_bug.cgi?id=1739034 https://bugzilla.redhat.com/show_bug.cgi?id=1739024 https://bugzilla.redhat.com/show_bug.cgi?id=1739042 They were updated this February to point out the uselessness of the packages, but nothign happened. I have a clear conscience if the packages stop building (and installing in case of trac-monotone-plugin). 2) Packages that BuildRequire python2-setuptools but don't use it: NFStest Pull request exists to remove the unused dependency: https://src.fedoraproject.org/rpms/NFStest/pull-request/2 3) Packages that BuildRequire python2-setuptools but don't have to: python2-cairo, python-psutil The two packages use this concept in setup.py: try: from setuptools import setup except ImportError: from distutils.core import setup technically, they don't need setuptools to build, the dependency is optional. Unfortunately they used setuptools to build in the past and if we remove it, the will change the .egg-info metadata directory to a file. Hence they will hit a well known limitation in RPM: https://docs.fedoraproject.org/en-US/packaging-guidelines/Directory_Replace… To compensate a rather ugly scriptlet is needed. The changes were proposed: https://src.fedoraproject.org/rpms/python-psutil/pull-request/10 https://src.fedoraproject.org/rpms/python2-cairo/pull-request/1 However, I'd rather maintain the 2 scriptlets than python2-setuptools. Please let me know if you see a problem. -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

1 2

Heads-up: python-pyrsistent 0.18.0 coming to Rawhide with a minor API change
by Ben Beasley 29 Jun '21

29 Jun '21

In one week, or slightly later, I will update python-pyrsistent to 0.18.0 in Rawhide (https://bugzilla.redhat.com/show_bug.cgi?id=1977038) This includes one minor API change; please see the release notes at https://raw.githubusercontent.com/tobgu/pyrsistent/1b8e85ed0164a8f9908bee05… for the full list of changes. The breaking change is as follows: > Fix #209 Update freeze recurse into pyrsistent data structures and thaw to recurse into lists and dicts, > Thanks @phil-arh for this! > NB! This is a backwards incompatible change! To keep the old behaviour pass `strict=False` to freeze and thaw. The following packages depend directly on this package (maintainers in parentheses): • python-jsonschema (apevec, @openstack-sig) • python-poetry-core (thrnciar, churchyard, @python-sig) Maintainers of potentially-affected packages should have received this email directly. I have performed test rebuilds of both directly-dependent packages in a COPR (https://copr.fedorainfracloud.org/coprs/music/pyrsistent-0.18/) without incident, so I hope no changes to dependent packages will be required.

1 0

package review request
by Mukundan Ragavan 29 Jun '21

29 Jun '21

Hi, Can someone please review this relatively straightforward package? This is new dependency for spyder. https://bugzilla.redhat.com/show_bug.cgi?id=1977120 Thank you. Mukundan. -- GPG Key: E5C8BC67

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Re: [Fedora-packaging] Macro to smoke-test-import a Python module in %check
by Miro Hrončok 28 Jun '21

28 Jun '21

On 28. 06. 21 22:25, Dan Čermák wrote: > Hi Miro, > > Miro Hrončok <mhroncok(a)redhat.com> writes: > >> Hello Python RPM packagers, >> >> based on some discussion in the "F35 Change: Python Packaging Guidelines >> overhaul (System-Wide Change proposal)" thread [0], I've drafted a macro that >> can help to test-import a Python module in %check when no other tests exist or >> are when they cannot be executed during build [1]. >> >> The semantics is quite simple: >> >> >> %check >> %py3_check_import mymodule mymodule.submodule >> >> ... > > This looks pretty good imho. Would it somehow be possible for the macro > to automatically try to import the module name from the generated > python3.Ydist() provides? That would make the macro even more convenient > to use and reduce any potential user error further. Honestly, I'd rather not do that. People already confuse "module names" (that's what you import) with "Python package names" (that's what you install from PyPI or what's provided as python3.Ydist()). And while this would make the macro slightly easier to use for the optimal case when those names are identical, it would only create more confusion when they are not. In the future, we could extend it to automatically import modules found in the %buidlroot, but now I'd rather provide a simple tool where the packager needs to be explicit, than a very complex tool that does heuristics. -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

1 0

orphaning some python packages
by Mukundan Ragavan 27 Jun '21

27 Jun '21

I am orphaning the following packages. They should not be needed for anything else in Fedora (acc. to dnf repoquery --whatprovides). python-jsonrpcserver (there is another package of similar name that is needed by spyder) All these are required by the package above. python-aiozmq python-flask-socketio python-socketio python-engineio Feel free to take any of the packages. Mukundan. -- GPG Key: E5C8BC67

1 0

fedora python virtualbox
by Szymon Gawłowski 23 Jun '21

23 Jun '21

Hello there! I've installed Fedora-python on the Virtualbox and need to enter login & password, but I don't know where it is? What is login&password? -- *Szymon Gawłowski*

2 1

Orphaned python-sure
by Miro Hrončok 22 Jun '21

22 Jun '21

I've orphaned python-sure. I've only maintained it because python-freezegun used it, but the dependency was bogus, see: https://src.fedoraproject.org/rpms/python-freezegun/pull-request/13 -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

1 0

Packages that failed to build with Python 3.10 (and what to do)
by Tomas Hrnciar 15 Jun '21

15 Jun '21

Hello. As you might already know, we have recently merged in the Python 3.10 side tag to Rawhide, despite several builds not succeeding. We always aim for some compromise between having the side tag open for too long and having too many failures. https://fedoraproject.org/wiki/Changes/Python3.10 The packages, when not rebuilt, are not installable in rawhide, hence fixing them should be our top priority. If you need help with Python-related issues, we (the Python Maintenance team at Red Hat) are happy to help. Unfortunately, several packages fail to build for Python-unrelated reasons. Most of the packages only fail to build because their dependencies were not yet rebuilt. Chances are, you already got an automated F35FailsToInstall bugzilla from Miro, that your package fails to install. It would be really helpful if you could find the missing dependency and mark the bugzilla for your package depending on the bugzilla for the missing dep. We slowly progress to do that as well, but your help is crucial here. If your package fails because there is a non-dependency problem, you might have already received a bugzilla from us in the past. If the build failure is related to changes in Python 3.10, it should contain some hints about the problem. # What to do? General advice: If you are aware of the problem and working towards fixing it, set your bugzilla to ASSIGNED to avoid further automated reminders. If blocked by dependencies, do not close the bugzillas as NOTABUG or DUPLICATE just because it is "not a problem in your package". The automation will file new ones anyway. ## My package fails to build because it has test failures in %check Please, try to resolve the failures. If you are confident that the package works fine, but the tests are wrong, skip some failing tests, ideally with a link to an upstream issue. Do not disable (e.g. comment out) all tests just to unblock the rebuild of your package, it usually only hides the problem. ## My package fails to build because it has broken build dependencies Please try to track the missing build dependencies in Bugzilla. If possible, help the maintainers of your dependencies to get them rebuilt. When in need of escalation, ask us for provenpackager help (ideally with pull requests to be merged). Once possible, rebuild your package (no need to bump the release, we already did that). When you do, the bugzilla will eventually get automatically closed, but you can do that manually as well. ## My package was rebuilt with Python 3.10 but it has broken runtime dependencies Please try to track the missing runtime dependencies in Bugzilla. If possible, help the maintainers of your dependencies to get them rebuilt. When in need of escalation, ask us for provenpackager help (ideally with pull requests to be merged). When the dependencies are rebuilt, your package will install successfully once again and the bugzilla will eventually get automatically closed, but you can do that manually as well. ## My package failed to build but installs just fine Some packages that only require libpython3.9.so.1.0 will successfully pull in the python3.9 package as a dependency and hence they don't have installation issues. They need to be rebuilt with Python 3.10 anyway, we don't want Fedora users to pull in two Python versions unless they need them for development purposes. ## How to run things locally? You can use mock. Make sure to: 1. Clear all caches first: $ mock -r fedora-rawhide-x86_64--scrub=all 2. Use the Koji repo: $ mock -r fedora-rawhide-x86_64 --enablerepo=local ... ## Where to get help Reply to this thread or find us (thrnciar, mhroncok) on #fedora-python IRC channel (libera.chat). --- Let us know if you have other questions. Maintainers by package: 5minute pmoravco APLpy sergiopr skytux MUSIC ankursinha Mayavi chedi orion NLopt besser82 OpenIPMI branto jridky lupinix pknirsch ProDy sagitter PyMca zbyszek androguard fab ansible-review dcallagh ttrinks antlr4-project jjames astrometry lupinix autoarchive fab blender design-sw hobbes1069 ignatenkobrain kwizart luya roma s4504kr slaanesh bugzilla2fedmsg abompard buildbot besser82 giallu ignatenkobrain ngompa radez smilner buildstream atim bochecha calibre chkr heliocastro kevin nushio zbyszek certbot nb clufter jpokorny mlisik omular tojeline collectd fab kevin mhlavink ruben xaeth condor bbockelm bcotton eerlands matt matyas stevetraylen tstclair ttheisen valtri copr-backend clime dturecek frostyx msuchy praiskup copr-dist-git clime dturecek frostyx msuchy praiskup datagrepper ralph diffoscope halfie zbyszek distgen bkabrda hhorak phracek pkubat dnfdaemon besser82 ngompa dnfdragora besser82 ngompa dolfin limb zbyszek espresso deji jngrad junghans fbthrift 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python-falcon abompard carlwgeorge python-fastapi music python-fastavro ankursinha python-ffc zbyszek python-fiat fab python-flask-autoindex pcpa python-flask-silk pcpa python-flask-socketio nonamedotc python-flask-whooshee clime mrmeee rkuska python-fn codeblock orphan python-fpylll pcpa python-fsleyes-props ankursinha python-fslpy ankursinha python-fsspec qulogic python-furl ignatenkobrain python-gast churchyard python-gatspy lupinix python-gcsfs fab python-geopandas qulogic python-geoplot qulogic python-glanceclient apevec jruzicka python-gnocchiclient mrunge pkilambi python-gradunwarp ignatenkobrain python-grako brouhaha python-gunicorn dcallagh ngompa python-h5io ignatenkobrain python-hdfs ankursinha python-hdmf lbazan python-healpy lupinix python-heatclient apevec jruzicka ryansb zaneb python-holidays orphan python-hypothesmith dcavalca salimma python-imbalanced-learn iztokf python-insteon fab python-interrogate iztokf python-joblib besser82 ignatenkobrain sergiopr python-jsonfield lbazan python-jsons fab python-jupymake jjames python-jupyter-polymake jjames python-keystoneauth1 alphacc apevec pabelanger python-keystoneclient apevec jruzicka python-klusta ankursinha python-language-server nonamedotc python-leather jujens python-lfpy lbazan victortyau python-libpysal qulogic python-losant-rest fab python-lz4 jgu orion python-lzo huzaifas python-magnumclient apevec chandankumar python-manilaclient zaitcev python-mapclassify qulogic python-mapnik tomh python-matrix-nio ankursinha python-mechanize mohanboddu python-minibelt uggla python-missingno lbazan python-mistralclient amoralej python-mne ignatenkobrain python-mne-bids lbazan python-mnemonic jonny python-molten akhaitov python-msrest melmorabity python-msrestazure melmorabity python-mtg tc01 python-murano-pkg-check jpena python-music21 zbyszek python-nashpy iztokf python-nb2plots jjames python-netmiko divius python-network-runner radez python-networkx jjames plautrba python-neurosynth lbazan python-neutronclient apevec jruzicka python-niaaml iztokf python-niaclass iztokf python-nibabel ignatenkobrain python-nikola jamatos maxamillion python-nilearn ankursinha python-nipy ignatenkobrain python-nitime ankursinha python-nixio ankursinha python-novaclient apevec jruzicka python-novaclient-os-networks ctria rjmco python-novaclient-os-virtual-interfaces ctria rjmco python-numpoly lbazan python-octaviaclient cgoncalves python-odml major python-oletools rebus robert python-openstackclient apevec python-openstacksdk apevec jpena python-opentelemetry melmorabity python-orderedmultidict ignatenkobrain python-os-client-config amoralej apevec pabelanger python-osc-lib amoralej apevec hguemar jpena jruzicka python-oslo-concurrency apevec mrunge python-oslo-db apevec gchamoul python-oslo-log apevec hguemar python-oslo-serialization apevec nsaje social python-oslo-utils apevec python-photutils sergiopr python-pingouin ankursinha python-pplpy jjames python-praw fab fale python-prawcore fab python-productivity fab python-pybids ankursinha python-pycares fantom python-pyeclib hguemar zaitcev python-pymatreader ankursinha python-pymoc lupinix python-pynetdicom alciregi python-pynwb lbazan python-pyone siddharthvipul1 python-pypet ankursinha python-pyphi ankursinha python-pyqtgraph swt2c python-pyriemann ankursinha python-pysb zbyszek python-pyscaffold ankursinha python-pyscf jussilehtola python-pyshtools qulogic python-pyside2 hobbes1069 python-pystemd ngompa salimma python-pytest-cases zbyszek python-pytest-mpi orion python-pytest-relaxed athmane python-pytest-toolbox fab python-pyunicorn iztokf python-pyvlx fab python-pyvo lupinix python-qcelemental jussilehtola python-qdarkstyle nonamedotc python-reproject lupinix python-rnc2rng ignatenkobrain python-rply ignatenkobrain python-rsd-lib amoralej python-rx atim carlwgeorge limb python-saharaclient apevec egafford jruzicka mimccune python-schedule fab python-shade larsks pabelanger python-shortuuid pbrobinson python-siosocks fab python-sklearn-nature-inspired-algorithms ankursinha iztokf python-slackclient limb python-slixmpp-omemo fantom python-smbprotocol fab python-social-auth-core cqi python-socketio nonamedotc python-soco fab python-sortedcollections fab python-spnego fab python-sport-activities-features iztokf python-spyder-kernels nonamedotc python-sqlalchemy-collectd mbayer mrunge python-sshtunnel orphan python-starlette music python-stompest abompard python-subprocess-tee chedi python-sushy amoralej divius python-svg-path kevin ralph python-swiftclient apevec jruzicka zaitcev python-sybil fab python-tackerclient amoralej python-taskflow apevec eharney python-tenacity mrunge pkilambi snecker python-test_server raphgro python-testfixtures fab python-texext jjames python-theano ignatenkobrain jjames sergiopr python-traitsui chedi ignatenkobrain orion python-transitions orphan python-trimesh ankursinha python-troveclient jruzicka mrunge python-twilio mich181189 python-typeguard dcavalca salimma snecker python-uvicorn carlwgeorge python-vitrageclient mrunge python-watchgod carlwgeorge python-wcmatch pnemade python-webpy mrunge python-wsproto carlwgeorge python-xarray qulogic python-xbout davidsch python-yapf lbazan python-yappi amoralej python-zarr qulogic python-zict qulogic pythran churchyard rmol denisarnaud sagemath pcpa spectrographic suve sshuttle jgu kevin maci sudo alakatos kzak mattdm rsroka zfridric sugar-datastore dsd pbrobinson tomeu sugar-paint callkalpa chimosky pbrobinson swift-lang tachoknight sympy cbm jjames jussilehtola orion trademgen denisarnaud usd luya music slaanesh uwsgi orphan veusz jsanders virt-bootstrap fidencio rstoyanov watchman dcavalca filbranden salimma xonsh carmenbianca jdulaney Packages by maintainer: aarem gnumeric abbot python-eventlet abompard bugzilla2fedmsg mailman3 python-aiosmtpd python-falcon python-stompest adrian mirrormanager2 akhaitov python-molten alakatos sudo alciregi python-pynetdicom alphacc python-keystoneauth1 amigadave libproxy python-eyed3 amoralej python-mistralclient python-os-client-config python-osc-lib python-rsd-lib python-sushy python-tackerclient python-yappi ankursinha MUSIC python-SALib python-brian2 python-dipy python-duecredit python-fastavro python-fsleyes-props python-fslpy python-hdfs python-klusta python-matrix-nio python-nilearn python-nitime python-nixio python-pingouin python-pybids python-pymatreader python-pypet python-pyphi python-pyriemann python-pyscaffold python-sklearn-nature-inspired-algorithms python-trimesh apevec python-aodhclient python-barbicanclient python-cinderclient python-designateclient python-glanceclient python-heatclient python-keystoneauth1 python-keystoneclient python-magnumclient python-neutronclient python-novaclient python-openstackclient python-openstacksdk python-os-client-config python-osc-lib python-oslo-concurrency python-oslo-db python-oslo-log python-oslo-serialization python-oslo-utils python-saharaclient python-swiftclient python-taskflow athmane python-pytest-relaxed athoscr python-compreffor atim buildstream kitty python-rx bbockelm condor bcotton condor belegdol gnumeric besser82 NLopt buildbot dnfdaemon dnfdragora luxcorerender python-joblib bkabrda distgen osbs-client bochecha buildstream bpepple python-eyed3 branto OpenIPMI breilly module-build-service brouhaha python-grako callkalpa sugar-paint carllibpst libpst carlwgeorge python-anyio python-falcon python-rx python-uvicorn python-watchgod python-wsproto carmenbianca xonsh cbm sympy cgoncalves python-octaviaclient chandankumar python-barbicanclient python-magnumclient chedi Mayavi python-cookiecutter python-subprocess-tee python-traitsui cheimes python-black chimosky sugar-paint chkr calibre churchyard python-beniget python-black python-gast pythran cicku libproxy python-eyed3 clime copr-backend copr-dist-git python-flask-whooshee codeblock python-fn cqi python-social-auth-core ctria python-novaclient-os-networks python-novaclient-os-virtual-interfaces cverna osbs-client danw libproxy davidsch python-xbout dcallagh ansible-review matrix-synapse python-concurrentloghandler python-gunicorn dcavalca fbthrift folly python-TestSlide python-dcrpm python-drgn python-hypothesmith python-typeguard watchman deji espresso paraview denisarnaud opentrep rmol trademgen design-sw blender divius python-netmiko python-sushy dsd sugar-datastore dturecek copr-backend copr-dist-git duck postfix-mta-sts-resolver dvratil kdevelop-python eerlands condor egafford python-saharaclient eharney python-cinderclient python-taskflow elyscape python-certbot-dns-digitalocean python-certbot-dns-gehirn python-certbot-dns-google python-certbot-dns-linode python-certbot-dns-ovh python-certbot-dns-route53 python-certbot-dns-sakuracloud evgenyz openscap fab androguard autoarchive collectd libprelude pykka python-aenum python-aiostream python-anyio python-asteval python-asyncio-dgram python-august python-bidict python-configargparse python-databay python-devtools python-diskcache python-fiat python-gcsfs python-insteon python-jsons python-losant-rest python-praw python-prawcore python-productivity python-pytest-toolbox python-pyvlx python-schedule python-siosocks python-smbprotocol python-soco python-sortedcollections python-spnego python-sybil python-testfixtures fale python-praw fantom python-aiodns python-pycares python-slixmpp-omemo fidencio virt-bootstrap filbranden fbthrift folly python-TestSlide python-dcrpm python-drgn watchman frostyx copr-backend copr-dist-git gchamoul python-oslo-db giallu buildbot girst mopidy mopidy-mpd gordonmessmer pyp2rpm halfie diffoscope heliocastro calibre hguemar python-osc-lib python-oslo-log python-pyeclib hhorak distgen hobbes1069 blender freecad imath lirc python-pyside2 huzaifas gnumeric python-lzo ignatenkobrain blender buildbot python-citeproc-py python-django-auth-ldap python-eventlet python-furl python-gradunwarp python-h5io python-joblib python-mne python-nibabel python-nipy python-orderedmultidict python-rnc2rng python-rply python-theano python-traitsui isimluk openscap iztokf python-EvoPreprocess python-contextualbandits python-earthpy python-imbalanced-learn python-interrogate python-nashpy python-niaaml python-niaclass python-pyunicorn python-sklearn-nature-inspired-algorithms python-sport-activities-features jamatos python-nikola jcerny openscap jdekloe pygrib pyproj jdornak mod_wsgi jdulaney xonsh jgrulich kdevelop-python jgu python-lz4 sshuttle jhrozek lasso jjames antlr4-project libpoly python-jupymake python-jupyter-polymake python-nb2plots python-networkx python-pplpy python-texext python-theano sympy jkaluza mod_wsgi jkastner freecad jngrad espresso jonkni perl-Inline-Python jonny python-mnemonic jorti nyx jorton mod_wsgi jpena python-murano-pkg-check python-openstacksdk python-osc-lib jpokorny clufter jridky OpenIPMI imath jruzicka python-cinderclient python-glanceclient python-heatclient python-keystoneclient python-neutronclient python-novaclient python-osc-lib python-saharaclient python-swiftclient python-troveclient jsanders veusz jskarvad gr-air-modes jspaleta python-basemap jujens python-agate python-agate-dbf python-agate-excel python-agate-sql python-csvkit python-leather junghans espresso python-MDAnalysis jussilehtola psi4 python-pyscf python-qcelemental sympy jwilson lirc kevin calibre collectd py-radix pyp2rpm python-IPy python-cssutils python-eventlet python-svg-path sshuttle kushal124 python-docx kwizart blender luxcorerender kzak sudo larsks python-shade lbazan pydeps python-chaospy python-django-post_office python-elephant python-elpy python-hdmf python-jsonfield python-lfpy python-missingno python-mne-bids python-neurosynth python-numpoly python-pynwb python-yapf lead2gold python-apprise leamas lirc limb dolfin python-basemap python-rx python-slackclient llaumgui gnome-gmail lmacken mod_wsgi logic python-certbot-dns-rfc2136 lupinix OpenIPMI astrometry ginga python-astroML python-astropy-healpix python-astroquery python-astroscrappy python-ccdproc python-gatspy python-healpy python-pymoc python-pyvo python-reproject luya blender luxcorerender usd maci sshuttle major python-odml martinkg mlt matt condor mattdm sudo matyas condor matyc openscap maxamillion osbs-client python-nikola mbayer python-sqlalchemy-collectd mcyprian pew mdbooth libguestfs melmorabity python-azure-sdk python-msrest python-msrestazure python-opentelemetry mhayden python-azure-sdk mhlavink collectd mich181189 python-twilio mikem module-build-service mimccune python-saharaclient minh kdevelop-python mitr m2crypto mlisik clufter mmarhefk openscap mohanboddu python-mechanize mrmeee python-flask-whooshee mrunge mod_wsgi python-gnocchiclient python-oslo-concurrency python-sqlalchemy-collectd python-tenacity python-troveclient python-vitrageclient python-webpy msuchy copr-backend copr-dist-git music jrnl python-fastapi python-starlette usd nb certbot python-certbot-apache python-certbot-dns-cloudflare python-certbot-dns-cloudxns python-certbot-dns-digitalocean python-certbot-dns-dnsimple python-certbot-dns-dnsmadeeasy python-certbot-dns-google python-certbot-dns-luadns python-certbot-dns-nsone python-certbot-dns-rfc2136 python-certbot-dns-route53 python-certbot-nginx python-configargparse ngompa buildbot dnfdaemon dnfdragora ipsilon m2crypto mailman3 python-authheaders python-dbusmock python-dkimpy python-gunicorn python-pystemd nonamedotc python-aiozmq python-engineio python-flask-socketio python-language-server python-qdarkstyle python-socketio python-spyder-kernels noodles python-configargparse npmccallum libproxy nsaje python-oslo-serialization nushio calibre omular clufter orion Mayavi paraview python-astropy python-envisage python-lz4 python-pytest-mpi python-traitsui sympy orphan python-fn python-holidays python-sshtunnel python-transitions uwsgi pabelanger python-keystoneauth1 python-os-client-config python-shade pbrobinson python-shortuuid sugar-datastore sugar-paint pcpa python-cypari2 python-cysignals python-flask-autoindex python-flask-silk python-fpylll sagemath pemensik ldns phracek distgen pjp python-eyed3 pkilambi python-aodhclient python-gnocchiclient python-tenacity pknirsch OpenIPMI pkubat distgen plautrba python-networkx pmoravco 5minute pnemade fontdump python-wcmatch praiskup copr-backend copr-dist-git puiterwijk ipsilon pvrabec openscap pwouters ldns qulogic python-animatplot python-cartopy python-contextily python-dask python-descartes python-fsspec python-geopandas python-geoplot python-libpysal python-mapclassify python-pyshtools python-xarray python-zarr python-zict radez buildbot python-network-runner ralph datagrepper python-svg-path raphgro jpype py4j python-test_server rcritten lasso rdieter libunity rebus python-oletools rjmco python-novaclient-os-networks python-novaclient-os-virtual-interfaces rjones libguestfs nbdkit rkuska python-flask-whooshee rmattes pcl robert python-oletools roma blender rsroka sudo rstoyanov virt-bootstrap ruben collectd ryansb python-heatclient s4504kr blender sagitter ProDy openmeeg paraview petsc pymol python-cclib salimma fbthrift folly kitty python-TestSlide python-dcrpm python-drgn python-hypothesmith python-pystemd python-typeguard watchman sergiomb mlt pymol sergiopr APLpy python-astropy python-emcee python-joblib python-photutils python-theano siddharthvipul1 python-pyone simo ipsilon lasso skytux APLpy slaanesh blender luxcorerender usd smani libkml mingw-python3 smilner buildbot snecker python-tenacity python-typeguard social python-oslo-serialization stevetraylen condor h5py suve liquidctl spectrographic swt2c python-pyqtgraph tachoknight swift-lang tadej pew tc01 python-mtg terjeros h5py thias python-cssutils thofmann pcl thozza ldns tojeline clufter tomeu sugar-datastore tomh python-mapnik totol libprelude prewikka tstclair condor ttheisen condor ttomecek osbs-client ttrinks ansible-review twaugh osbs-client uggla python-minibelt v02460 python-authlib valtri condor victortyau python-lfpy vkmc python-designateclient vpolasek openscap vrutkovs osbs-client wakko666 python-cookiecutter wsato openscap xaeth collectd xavierb python-f5-sdk zaitcev python-manilaclient python-pyeclib python-swiftclient zaneb python-heatclient zbyszek PyMca calibre diffoscope dolfin moose python-ffc python-music21 python-pysb python-pytest-cases zfridric sudo zultron freecad

4 5

Draft of New Python Packaging Guidelines
by Petr Viktorin 15 Jun '21

15 Jun '21

Hello! Below is a draft of new Packaging Guidelines! It's full of unfinished areas (marked with XXX), but it's ready for scrutiny. A possibly updated version is on https://hackmd.io/XzJe-sHUQvWK7cSrEH_aKg?view Generally, for rules marked **SHOULD** we know of cases where they should be broken; for things marked **MUST** we don't. We have tried to only take the Good Existing Things™ (macros, practices) and revise the rest without thinking about the past much. Some used technology is unfortunately not compatible with current EPELs, but we have considered Fedora 31+. Using the current Python guidelines will still be an option for people who target EPEL 6/7/8. The main controversial idea (of many) is synchronizing Fedora's names (a.k.a. `python3dist(...)`, a.k.a. `name` in `setup.py`) with the Python Package Index (PyPI, pypi.org) which has by now become the de-facto canonical namespace for freely redistributable Python packages. We believe that this will help both Fedora and the greater Python ecosystem, but there will definitely be some growing pains. Most of Fedora Python packages already are on PyPI, but more than 250 are missing. There is software developed within Fedora (e.g. pagure, fedpkg, rust2rpm); projects that aren't primarily Python packages (e.g. perf, ceph, xen, setroubleshoot, iotop); and others. A full list is attached. The names have been temporarily blocked on PyPI to keep trolls from taking them while this is discussed. Over at the Python Discourse we are discussing how to properly handle these; once that discussion is settled they should be unblocked: https://discuss.python.org/t/pypi-as-a-project-repository-vs-name-registry-… Another general idea is that package metadata should be kept upstream; the spec file should duplicate as little of it as possible. Any adjustments should be done with upstreamable patches. The draft lives on hackmd.io, which we found easy to collaborate with. If you have an account there, we can add you. If you'd like to collaborate some other way, let us know. Petr and Miro ----------------------- Current draft for inline comments: > [IMPORTANT] > This is a DRAFT; it is not in effect yet. # Python Packaging Guidelines (draft) > [IMPORTANT] > This is a *beta* version of the Python Packaging Guidelines and the associated RPM macros. > Packagers that opt in to following this version **MUST** be prepared to change their packages frequently when the guidelines or macros are updated. > These packagers **SHOULD** join [Python SIG mailing list](https://lists.fedoraproject.org/archives/list/python-devel@lists.fedo… and monitor/start conversations there. These Guidelines represent a major rewrite and paradigm shift, and not all packages are updated to reflect this. Older guidelines are still being kept up to date, and existing packages **MAY** use them instead of this document: * 201x-era Python packaging guidelines (for packages that use e.g. `%py3_install` or `setup.py install`) * Python 2 appendix (for e.g. `%py2_install`) (requires FESCo exception) > [NOTE] > These guidelines only support Fedora 31+. For older releases (such as in EPEL 8), consult the older guidelines (XXX link). The two "Distro-wide guidelines" below apply to all software in Fedora that uses Python at build- or run-time. These rest of the Guidelines apply to packages that ship code that *can* be imported in Python. Specifically, that is all packages that install files under `/usr/lib*/python*/`. Except for the two "Distro-wide guidelines", these Guidelines do not apply to simple one-file scripts or utilities, especially if these are included with software not written in Python. However, if an application (e.g. CLI tool, script or GUI app) needs a more complex Python library, the library **SHOULD** be packaged as an importable library under these guidelines. A major goal for Python packaging in Fedora is to *harmonize with the wider Python ecosystem*, that is, the [Python Packaging Authority](https://pypa.io) (PyPA) standards and the [Python Package Index](https://pypi.org) (PyPI). Packagers **SHOULD** be prepared to get involved with upstream projects to establish best practices as outlined here. We wish to improve both Fedora and the wider Python ecosystem. > [NOTE] > Fedora's Python SIG not only develops these guidelines, but it's also involved in PyPA standards and Python packaging best practices. Check out [the wiki](https://fedoraproject.org/wiki/SIGs/Python) or [mailing list](https://lists.fedoraproject.org/archives/list/python-devel@lists.fedo… if you need help or wish to help out. ## Distro-wide guidelines ### BuildRequire python3-devel **Every** package that uses Python (at runtime and/or build time), and/or installs Python modules **MUST** explicitly include `BuildRequires: python3-devel` in its `.spec` file, even if Python is not actually invoked during build time. If the package uses an alternate Python interpreter instead of `python3` (e.g. `pypy`, `jython`, `python27`), it **MAY** instead require the coresponding `*-devel` package. The `*-devel` package brings in relevant RPM macros. It may also enable automated or manual checks: for example, Python maintainers use this requirement to list packages that use Python in some way and might be affected by planned changes. ### Mandatory macros The following macros **MUST** be used where applicable. The expansions in parentheses are provided only as reference/examples. The macros are defined for you in all supported Fedora and EPEL versions. * `%{python3}` (`/usr/bin/python3`) The Python interpreter. For example, this macro should be used for invoking Python from a `spec` file script, passed to `configure` scripts to select a Python executable, or used as `%{python3} -m pytest` to run a Python-based tool. > XXX: Use shebang opts for shebang; document pathfix macro. Document cases where you don't want this. * `%{python3_version}` (e.g. `3.9`) Version of the Python interpreter. * `%{python3_version_nodots}` (e.g. `39`) Version of the Python interpreter without the dot. * `%{python3_sitelib}` (e.g. `/usr/lib/python3.9/site-packages`) Where pure-Python modules are installed. * `%{python3_sitearch}` (e.g. `/usr/lib64/python3.9/site-packages`) Where Python3 extension modules (native code, e.g. compiled from C) are installed. The rest of this document uses these macros, along with `%{_bindir}` (`/usr/bin/`), instead of the raw path names. ## Python implementation support Fedora primarily targets *CPython*, the reference implementation of the Python language. We generally use “Python” to mean CPython. Alternate implementations like `pypy` are available, but currently lack comprehensive tooling and guidelines. When targetting these, there are no hard rules (except the general Fedora packaging guidelines). But please try to abide by the *spirit* of these guidelines. When in doubt, consider consulting the Python SIG. ## Python version support Fedora packages **MUST NOT** depend on other versions of the CPython interpreter than the current `python3`. In Fedora, Python libraries are packaged for a single version of Python, called `python3`. For example, in Fedora 32, `python3` is Python 3.8. In the past, there were multiple Python stacks, e.g. `python3.7` and `python2.7`, installable together on the same machine. That is also the case in some projects that build *on top* of Fedora, like RHEL, EPEL and CentOS. Fedora might re-introduce parallell-installable stacks in the future (for example if a switch to a new Python version needs a transition period, or if enough interested maintainers somehow appear). > XXX dots in package names! Fedora does include alternate interpreter versions, e.g. `python2.7` or `python3.5`, but these are meant only for developers that need to test upstream code. Bug and security fixes for these interpreters only cover this use case. Packages such as `pip` or `tox`, which enable setting up isolated environments and installing third-party packages into them, **MAY**, as an exception to the rule above, use these interpreters as long as this is coordinated with the maintainers of the relevant Python interpreter. ## BuildRequire pyproject-rpm-macros While these guidelines are in Beta, each Python package **MUST** have `BuildRequires: pyproject-rpm-macros` to access the beta macros. (When we go out of Beta, listing the dependency won't be necessary: we'll make `python3-devel` require it.) ## Naming Python packages have several different names, which should be kept in sync but will sometimes differ for historical or practical reasons. They are: * the Fedora *source package name* (or *component name*, `%{name}`), * the Fedora *built RPM name*, * the *project name* used on *PyPI* or by *pip*, and * the *importable module name* used in Python (a single package may have multiple importable modules). Some examples (both good and worse): | Fedora component | Built RPM | Project name | Importable module | | ----------------- | ------------------ | -------------- | -------------------- | | `python-requests` | `python3-requests` | `requests` | `requests` | | `PyYAML` | `python3-pyyaml` | `pyyaml` | `yaml` | | `python-ldap` | `python3-ldap` | `python-ldap` | `ldap`, `ldif`, etc. | | `python-pillow` | `python3-pillow` | `pillow` | `PIL` | Elsewhere in this text, the metavariables `SRPMNAME`, `RPMNAME`, `PROJECTNAME`, `MODNAME` refer to these names, respectively. ### Canonical project name Most of these names are case-sensitive machine-friendly identifiers, but the *project name* has human-friendly semantics: it is case-insensitive and treats some sets of characters (like `._-`) specially. For automated use, it needs to be [normalized](https://www.python.org/dev/peps/pep-0503/#normalized-names) to a canonical format used by Python tools and services such as setuptools, pip and PyPI. The `%{py_dist_name}` macro implements this normalization. Elsewhere in this text, the metavariable `DISTNAME` refers to the canonical form of the project name. > XXX > ```spec > # XXX specfile > %py_set_name Django > -> %distname django > -> %pojectname Django > ``` > > XXX rewrite: It is customary to define the macro `%{distname}` as the canonical project name and use it throughout the `spec` file. Some helper macros use `%{distname}` for this purpose by default. > > XXX in some places, the "original project name" must be used -- e.g. `%pypi_source` and `%autosetup` need `Django`, not `django`. > XXX The following sections should supersede the [Python section on the Naming guidelines](https://docs.fedoraproject.org/en-US/packaging-guidelines/Namin…. ### Library naming A built (i.e. non-SRPM) package for a *Python library* **MUST** be named with the `python3-` prefix. A source package containing primarily a *Python library* **MUST** be named with the prefix `python-`. The Fedora package's name **SHOULD** contain the *canonical project name*. If possible, the project name **SHOULD** be the same as the name of the main importable module, with underscores (`_`) replaced by dashes (`-`). A *Python library* is a package meant to be imported in Python, such as with `import requests`. Tools like *Ansible* or *IDLE*, whose code is importable but not primarily meant to be imported, are not considered libraries in this sense, so this section does not apply for them. (See the [general Libraries and Applications guidelines](https://docs.fedoraproject.org/en-US/packaging-guidelines/#_lib… for details.) If the importable module name and the project name do not match, users frequently end up confused. In this case, packagers *should* ensure that upstream is aware of the problem and (especially for new packages where renaming is feasible) strive to get the package renamed. The Python SIG is available for assistance. The Fedora package name should be formed by taking the *project name* and prepending `python-` if it does not already start with `python-`. This may leads to conflicts (e.g. between [bugzilla](https://pypi.org/project/bugzilla/) and [python-bugzilla](https://pypi.org/project/python-bugzilla/)) In that case, ensure upstream is aware of the potentially confusing naming and apply best judgment. ### Application naming Packages that primarily provide executables **SHOULD** be named according to the general Fedora guidelines (e.g. `ansible`). Consider adding a virtual provide according to Library naming above (e.g. `python3-PROJECTNAME`), if it would help users find the package. ## Files to include ### Source files and bytecode cache Packages **MUST** include the source file (`*.py`) **AND** the bytecode cache (`*.pyc`) for each pure-Python module. The cache files are found in a `__pycache__` directory and have an interpreter-dependent suffix like `.cpython-39.pyc`. The cache is not necessary to run the software, but if it is not found, Python will try to create it. If this succeeds, the file is not tracked by RPM and it will linger on the system after uninstallation. If it does not succeed, users can get spurious SELinux AVC denials in the logs. Normally, byte compilation (generating the cache files) is done for you by the `brp-python-bytecompile` script (XXX link to BRP guidelines), which runs automatically after the `%install` section of the spec file has been processed. It byte compiles any `.py` files that it finds in `%{python3_sitelib}` or `%{python3_sitearch}`. You must include these files of your package (i.e. in the `%files` section). If the code is in a subdirectory (importable package), include the entire directory: ``` %files %{python3_sitelib}/foo/ ``` Adding the trailing slash is best practice for directories. However, this cannot be used for top-level scripts (those directly in e.g. `%{python3_sitelib}`), because both `%{python3_sitelib}` and `%{python3_sitelib}/__pycache__/` are owned by Python itself. Here, the `%pycached` macro can help. It expands to the given `*.py` source file and its corresponding cache file(s). For example: ``` %files %pycached %{python3_sitelib}/foo.py ``` expands roughly to: ``` %files %{python3_sitelib}/foo.py %{python3_sitelib}/__pycache__/foo.cpython-3X{,.opt-?}.pyc ``` #### Manual byte compilation If you need to bytecompile stuff outside of `%{python3_sitelib}`/`%{python3_sitearch}`, use the `%py_byte_compile` macro. For more details on `%py_byte_compile` and on the internals of bytecode compilation, please see the [appendix](https://docs.fedoraproject.org/en-US/packaging-guidelines/Python_…. > XXX: Copy the section from appendix here ### Dist-info metadata Each Python package **MUST** include *Package Distribution Metadata* conforming to [PyPA specifications](https://packaging.python.org/specifications/) (specifically, [Recording installed distributons](https://packaging.python.org/specifications/recording-install…) This applies to libraries (e.g. `python-requests`) as well as tools (e.g. `ansible`). > XXX what with splitting into subpackages? 1) dist-info always installed, 2) dist-info installed trough a metapackage? > * Ideally, do the split upstream > * Consider package split between library & tool (see poetry, fedpkg) > > e.g. > When software is split into several subpackages, it is OK to only ship metadata in one built RPM. The metadata takes the form of a `dist-info` directory installed in `%{python3_sitelib}` or `%{python3_sitearch}`, and contains information that tools like [`importlib.metadata`](https://docs.python.org/3/library/importlib.metadata.html) use to introspect installed libraries. > XXX example %files with manual dist-info entry Note that some older tools instead put metadata in an `egg-info` directory, or even a single file. This won't happen if you use the `%pyproject_wheel` macro. If your package uses a build system that generates an `egg-info` directory or file, please contact Python SIG. > XXX We need a better solution before we go out of beta. As an exception, the Python standard library **MAY** ship without this metadata. ### Explicit lists Packagers **SHOULD NOT** simply glob everything under a shared directory. In particular, the following **SHOULD NOT** be used: * `%{python3_sitelib}/*` * `%{python3_sitearch}/*` * `%{python_sitelib}/*` * `%{python_sitearch}/*` * `%{_bindir}/*` * `%pyproject_save_files *` * `%pyproject_save_files +bindir` This rule serves as a check against common mistakes which are otherwise hard to detect. It does limit some possibilities for automation. The most common mistake this rule prevents is installing a test suite system-wide as an importable module named `test`, which would then conflict with other such packages. ## PyPI parity Every Python package in Fedora **SHOULD** also be available on [the Python Package Index](https://pypi.org) (PyPI). The command `pip install PROJECTNAME` **MUST** install the same package (possibly in a different version), install nothing, or fail with a reasonable error message. If this is not the case, the packager **MUST** contact upstream about this. The goal is to get the project name registered or blocked on PyPI, or to otherwise ensure the rule is followed. > XXX Note that project names that were in Fedora but not on PyPI when these guidelines were proposed are *blocked* as we discuss how they should be handled. > This prevents potential trolls, but also legitimate owners, from taking them. This is necessary to protect users, avoid confusion, and enable automation as Fedora and upstream ecosystems grow more integrated. As always, specific exceptions can be granted by FPC (XXX link exceptions rules). > XXX Write an automated check for this. ## Provides and requirements ### Provides for importable modules For any module intended to be used in Python 3 with `import MODNAME`, the package that includes it **SHOULD** provide `python3-MODNAME`, with underscores (`_`) replaced by dashes (`-`). This is of course always the case if the package is named `python3-MODNAME`. If the subpackage has some other name, then add `%py_provides python3-MODNAME` explicitly. See the following section to learn about `%py_provides`. ### Automatic unversioned provides For any `FOO`, a package that provides `python3-FOO` **SHOULD** use `%py_provides` or an automatic generator to also provide `python-FOO`. The provide **SHOULD NOT** be added manually: if the generator or macro is not used, the provide shall not be added at all. On Fedora 33+, this is done automatically for package names by a generator. The generator can be disabled by undefining `%__pythonname_provides`. The following macro invocation will provide both `python3-FOO` and `python-FOO`: %py_provides python3-FOO > XXX: finalize `%py_provides` Using the generator or macro is important, because the specific form of the provide may change in the future. ### Machine-readable provides Every Python package **MUST** provide `python3dist(DISTNAME)` **and** `python3.Xdist(DISTNAME)`, where `X` is the minor version of the interpreter and `DISTNAME` is the *canonical project name* corresponding to the *dist-info metadata*, for example `python3.9dist(requests)`. (XXX: add links to previous sections) This is generated automatically from the dist-info metadata. The provide **SHOULD NOT** be added manually: if the generator fails to add it, the metadata **MUST** be fixed. If necessary, the automatic generator can be disabled by undefining `%__pythondist_provides`. These *Provides* are used for automatically generated *Requires*. ### Dependencies As mentioned above, each Python package **MUST** explicitly BuildRequire `python3-devel`. Packages **MUST NOT** have dependencies (either build-time or runtime) with the unversioned prefix `python-` if the corresponding `python3-` dependency can be used instead. Packages **SHOULD NOT** have explicit dependencies (either build-time or runtime) with a minor-version prefix such as `python3.8-` or `python3.8dist(`. Such dependencies **SHOULD** instead be automatically generated or a macro should be used to get the version. Packages **SHOULD NOT** have an explicit runtime dependency on `python3`. Instead of depending on `python3`, packges have an automatic dependency on `python(abi) = 3.X` when they install files to `%{python3_sitelib}` or `%{python3_sitearch}`, or they have an automatic dependency on `/usr/bin/python3` if they have executable Python scripts, or they have an automatic dependency on `libpython3.X.so.1.0()` if they embed Python. These rules help ensure a smooth upgrade path when `python3` is updated in new versions of Fedora. ### Automatically generated dependencies Packages **MUST** use the automatic Python run-time dependency generator. Packages **SHOULD** use the opt-in build-dependency generator if possible. Any necessary changes **MUST** be done by patches or modifying the source (e.g. with `sed`), rather than disabling the generator. The resulting change **SHOULD** be offered to upstream. As an exception, [filtering](https://docs.fedoraproject.org/en-US/packaging-guidelines/AutoPr… **MAY** be used for temporary workarounds and bootstrapping. Dependencies covered by the generators **SHOULD NOT** be repeated in the `.spec` file. (For example, if the generator finds a `requests` dependency, then `Requires: python3-requests` is redundant.) The automatically generated requirements are in the form `python3.Xdist(DISTNAME)`, potentially augmented with version requirements or combined together with [rich dependencies](https://rpm.org/user_doc/boolean_dependencies.html). Note that the generators only cover Python packages. Other dependencies, often C libraries like `openssl-devel`, must be specified in the `.spec` file manually. > XXX When implemented, this goes here: Alternatively, upstream Python packages may list non-Python dependencies in the `[tool.fedora.requires]`/`[tool.fedora.buildrequires]` section of `pyproject.toml`. This is non-standard and only recommended for Fedora-related packages. Where the requirements are specified in the source depends on each project's build system and preferences. Common locations are `pyproject.toml`, `setup.py`, `setup.cfg`, `config.toml`. #### Run-time dependency generator The automatic runtime dependency generator uses package metadata (as recorded in installed `*.dist-info` directories) to determine what the package depends on. In an emergency, you can opt-out from running the requires generator by adding `%{?python_disable_dependency_generator}` to the package (usually, just before the main package’s `%description`). #### Build-time dependency generator The opt-in (but strongly recommended) build-time dependency generator gathers information from [`pyproject.toml` build-system information](https://www.python.org/dev/peps/pep-0517/#source-trees) (with fallback to `setuptools`) plus a standardized [build-system hook](https://www.python.org/dev/peps/pep-0517/#get-requires-for-build-whee… to gather further requirements. See `%pyproject_buildrequires` (XXX link) for more details. ### Test dependencies See the *Tests* section. (XXX link.) ### Extras > XXX No story here so far. > XXX Note: [python-django-storages](https://src.fedoraproject.org/rpms/python-django-st…, `drf-yasg` etc. do `%python_provide python3-%{srcname}+%{distname}` and `python3dist(%{srcname}/%{extraname})` XXX `python3dist(%{srcname}[%{extraname}])` ## Interpreter invocation ### Shebangs Shebangs lines to invoke Python **SHOULD** be `#!%{python3} -%{py3_shebang_flags}` and it **MAY** include extra flags. > XXX define py3_shebang_flags If the default flags from `%{py3_shebang_flags}` are not desirable, packages **SHOULD** explicitly redefine the macro to remove them. Using `#!%{python3}` (`#!/usr/bin/python3`) rather than e.g. `#!/usr/bin/env python` ensures that the system-wide Python interpreter is used to run the code, even if the user modifies `$PATH` (e.g. by activating a virtual environment). By default, `-%{py3_shebang_flags}` expands to `-s`, which means *don't add user site directory to `sys.path`*. That ensures user-installed Python packages (e.g. by `pip install --user`) don't interfere with the RPM installed software. Sometimes, `pip`-installed content is desirable, such as with plugins. Redefining `%{py3_shebang_flags}` to not include `s`, rather than not using the macro at all, ensures that existing or future automation won't add the flag. The `%pyproject_install` macro automatically changes all Python shebangs in `%{buildroot}%{_bindir}/*` to use `%{python3}` and add `%{py3_shebang_flags}` to the existing flags. If you're not using the macro or you need to change a shebang in a different directory, you can use the `pathfix.py` command as follows: ``` pathfix.py -n -p -k -i %{python3} -a %{py3_shebang_flags} SCRIPTNAME … ``` > XXX Ouch! Macroize this? Hell yes! > > `%py3_shebang_fix <paths>` -- also rename `%{py3_shebang_flags}` (doesn't include dash) > > can be used in `%prep` or `%install` where: * `-n` disables ceating backups * `-p` preserves timestamps * `-k` keeps existing flags * `-i` specifies the new interpreter ### Invokable Python modules Every executable `TOOL` for which the current version of Python matters **SHOULD** also be invokable by `python3 -m TOOL`. If the software doesn't provide this functionality, packagers **SHOULD** ask the upstream to add it. This applies to tools that modify the current Python environment (like installing or querying packages), use Python for configuration, or use Python to run plugins. It does not apply to tools like GIMP or Bash which support plugins in multiple languages and/or have other means to specify the interpreter. For example, `pip` can be invoked as `python3 -m pip`. This allows users to accurately specify the Python version used to run the software. This convention works across different environments that might not always set `$PATH` or install scripts consistently. ## Using Cython Tightening the general Fedora policy, packages **MUST NOT** use files pre-generated by Cython. These **MUST** be deleted in `%prep` and regenerated during the build. As an exception, these sources **MAY** be used temporarily to prevent build time circular dependencies by following the [bootstrapping](https://docs.fedoraproject.org/en-US/packaging-guidelines/#b… guidelines. Generated files (the ones that must be deleted) have a generic `.c` or `.cpp` extension. Cython source files (which should stay) usually have the `.pyx` or `.pxd` extension. Cython is a popular tool for writing extension modules for Python. If compiles a Python-like language to C, which is then fed to the C compiler. Historically, Cython was hard to use upstream as a build-time dependency. Many projects include pre-generated C files in source distribution to avoid users from needing to install the tool. Cython uses CPython's fast-changing internal API for performance reasons. For a new release of Python, Cython generally needs to be updated and the C files regenerated. In Fedora, this is frequently needed before upstreams release re-generated sources (e.g. for Alpha versins of Python). Since we do not have a problem with build-time dependencies, we always want to run the Cython step. > XXX example spec snippet ## Tests ### Running tests If a test suite exists, it **MUST** be run in the `%check` section and/or in Fedora CI. You **MAY** exclude specific failing tests. You **MUST NOT** disable the entire testsuite or ignore the result to solve a build failure. As an exception, you **MAY** disable tests with an appropriate `%if` conditional (e.g. bcond) when [bootstrapping](https://docs.fedoraproject.org/en-US/packaging-guidelines/#b…. A popular testing tool, and one which is well integrated in Fedora, is `tox`. Upstream, it is commonly used to test against multiple Python versions. In a Fedora package, BuildRequire test dependencies (see *Test dependencies* below) and run `tox` with: ``` %tox ``` This sets up the environment (`$PATH`, `$PYTHONPATH`, `$TOX_TESTENV_PASSENV`) and instructs `tox` to use the current environment rather than create new ones. For more options, see *Build macros* (XXX link to section). When upstream doesn't use `tox`, the tests need to be run directly depending on upstream choice of a test runner. A popular runner is `pytest`, which can be run against the package to be installed using: ``` export PATH=%{buildroot}%{_bindir} export PYTHONPATH=%{buildroot}%{python3_sitearch}:%{buildroot}%{python3_sitelib} /usr/bin/pytest # XXX `%{python} -m pytest` doesn't work :( -- sees PWD ``` > XXX Do we want a macro for that? We do, because not all projects have tox. > > Define %__pytest or %_pytest %pytest_command - /usr/bin/pytest > > Define %pytest (see above snippet) (not parametric) Use positional arguments to specify test directory, and `-k` to select tests (e.g. `-k "not network"` may deselect all network-related tests). ### Test dependencies One part of the Python packaging ecosystem that is still not standardized is specifying test dependencies (and development dependencies in general). The best practice to specify tests is using an extra (XXX link to section above, which should be fleshed out) like `[test]` or `[dev]`. In this case, upstream's instructions to install test dependencies might look like `pip install -e.[test]`. Projects using `tox` usually specify test dependencies in a `tox`-specific format: a [requires](https://tox.readthedocs.io/en/latest/config.html#conf-requires) key in the configuration. Both forms are handled by the `%pyproject_buildrequires` macro, see below. If upstream does not use either form, list test dependencies as manual *BuildRequires* in the `spec` file. ### Linters In `%check`, packages **SHOULD NOT** run “linters”: code style checkers, test coverage checkers and other tools that check code quality rather than functionality. Tools like `black`, `pylint`, `flake8`, or `mypy` are often “opinionated” and their “opinions” change frequently enough that they are nuisance in Fedora, where the linter is not pinned to an exact version. Furthermore, some of these tools take a long time to adapt to new Python versions, preventing early testing with Aplha and Beta releases of Python. And they are just not needed: wrongly formatted code is not important enough for the Fedora packager to bug the upstream about it. Making such an issue break a package build is entirely unreasonable. Linters *do* make sense in upstream CI. But not in Fedora. If a linter is used, disable it and remove the dependency on it. If that is not easy, talk to upstream about making it easy (for example with a configuration option or a separate `tox` environment). For packages that contain such linters, use them at runtime or extend them, you will usually need to run the linter in `%check`. Run it to test functionality, not code quality of the packaged software. ## Source files from PyPI Packages **MAY** use sources from PyPI. However, packages **SHOULD NOT** use an archive that omits test suites, licences and/or documentation present in other source archives. For example, as of this writing `pip` provides a [source tarball (“sdist”)](https://pypi.org/project/pip/#files) which omits the relatively large `tests` and `docs` directories present in [the source on GitHub](https://github.com/pypa/pip). In this case, the tarball from GitHub should be used (XXX link to source URL guidelines). When using sources from PyPI, you can use the `%pypi_source` macro to generate the proper URL. See the *Macro reference* (XXX link directly to macro) for details. ## Sample spec file The following is a viable spec file for a hypothetical Python library called `pello` that follows packaging best practices. > XXX *Need to get `Pello` uploaded as real example and on GH under fedora-python. ``` %py_set_name Pello Name: python-%{distname} Version: 1.2.3 Release: 1%{?dist} Summary: Example Python library License: MIT URL: https://github.com/fedora-python/Pello Source0: %{pypi_source} BuildArch: noarch BuildRequires: python3-devel BuildRequires: pyproject-rpm-macros %global _description %{expand: A python module which provides a convenient example. This description provides some details.} %description %_description %package -n python3-%{distname} Summary: %{summary} %description -n python3-%{distname} %_description %prep %autosetup -p1 -n %{projectname}-%{version} %generate_buildrequires %pyproject_buildrequires -t %build %pyproject_wheel %install %pyproject_install # Here, "pello" is the name of the importable module. # You may use %%{distname} here if it's the same. %pyproject_save_files pello %check %tox # Note that there is no %%files section for # the unversioned python module, python-%%{distname} %files -n python3-%{distname} -f %{pyproject_files} %doc README.md %license LICENSE %{_bindir}/pello-greeting ``` ## Macro Reference See the *Mandatory macros* section above. (XXX link to section)  * `%{python3}` (`/usr/bin/python3`) * `%{python3_version}` (e.g. `3.9`) * `%{python3_version_nodots}` (e.g. `39`) * `%{python3_sitelib}` (e.g. `/usr/lib/python3.9/site-packages`) * `%{python3_sitearch}` (e.g. `/usr/lib64/python3.9/site-packages`) ### Name macros * `%py_set_name PROJECTNAME` (e.g. `%py_set_name Django`) Sets `%{projectname}` to the given name, and `%{distname}` to the canonical version of it. These macros can then be used throughout the `spec` file. See *Naming* for details and *Sample spec file* for examples. (XXX link to sections) * `%{projectname}` (e.g. `Django`) Set by `%py_set_name` to the *project name* of the software. * `%{distname}` (e.g. `django`) Set by `%py_set_name` to the *canonical project name* of the software. ### Shebang macro * `%{py3_shebang_flags}` (`s`) Flags for `%{python3}` to use in shebangs. Redefine this macro to use a different set of flags. See *Shebangs* [XXX link section] for details. ### Convenience macros * `%{pypi_source [PROJECTNAME [VERSION [EXT]]]}` (e.g. `https://.../Django-3.0.5.tar.gz`) Evaluates to the appropriate URL for source archive hosted on PyPI. Accepts up to three optional arguments: 1. The name of the PyPI project. Defaults to `%srcname` if defined, or to `%pypi_name` if defined, or to `%name` (the package name). [XXX default to `%projectname`] 2. The version of the PyPI project. Defaults to `%version` (the package version). 3. The file extension to use. Defaults to `tar.gz`. In most cases it is not necessary to specify any arguments. * `%{python3_platform}` (e.g. `linux-x86_64`) The platform name. Used in some Python build systems. ### Build macros These macros are most useful for packaging Python projects that use the `pyproject.toml` file defined in [PEP 518](https://www.python.org/dev/peps/pep-0518/) and [PEP 517](https://www.python.org/dev/peps/pep-0517/), which specifies the package's build dependencies (including the build system, such as setuptools, flit or poetry). If `pyproject.toml` is not found, the macros automatically fall backs to using `setuptools` with configuration in `setup.cfg`/`setup.py`. A full tutorial and discussion for the macros is available in the macros' [README](https://src.fedoraproject.org/rpms/pyproject-rpm-macros/). * `%pyproject_wheel` Build the package. Commonly, this is the only macro needed in the `%build` section. This macro needs BuildRequires generated by `%pyproject_buildrequires`. * `%pyproject_install` Install the package built by `%pyproject_wheel`. This macro needs BuildRequires generated by `%pyproject_buildrequires`. * `%pyproject_buildrequires` Generate BuildRequires for the package. Used in the `%generate_buildrequires` section of the `spec` file. The macro has these options: * `-r`: Include build-time requirements (commonly needed for `%check`). * `-x EXTRA`: Include dependencies given by the given *extra* (XXX link). [XXX Multiple comma separated values cannot be given yet.] * `-t`: Include dependencies for the default *tox* environment. Implies `-r`. * `-e ENV`: Include dependencies for the given *tox* environment, and save the `ENV` name as `%{toxenv}`. Implies `-r`. Multiple comma separated values can be given, for example: %pyproject_buildrequires -e %{toxenv}-unit,%{toxenv}-integration * `%pyproject_save_files MODNAME …` Generate a list of files corresponding to the given importable modules, and save it as `%{pyproject_files}`. Note that README and licence files are not included. Also, while the macro allows including executable files (using the `+bindir` flag), this feature **MUST NOT** be used in Fedora. The `MODNAME` may be a glob pattern, which should be specific to your package. As mentioned in the *Explicit lists* section, expressions like `%pyproject_save_files *` are not acceptable. * `%{pyproject_files}` Path of the file written by `%pyproject_save_files`, to be used as: %files -n python3-%{distname} -f %{pyproject_files} * `%tox` Run tests using `tox`. A different environment may be specified with `-e`, for example: ``` %check %tox %if %{with integration_test} %tox -e %{toxenv}-integration %endif ``` Flags for the `tox` command can be specified after `--`: %tox -- --parallel 0 Additional arguments for the test runner may be specified after another `--`: %tox -- --parallel 0 -- --verbose tests/* * `%{toxenv}` The *tox* environment used by the `%tox` macro. Can be overridden manually or with `%pyproject_buildrequires -t ENV`. * `%{default_toxenv}` (e.g. `py39`) The system-wide default value of `%{toxenv}`. ### Manual Generation The following macros are available for cases where automatic generation is turned off. They can also be useful for handling files in non-standard locations where the generators don't look. * `%pycached MODNAME.py` Given a Python file, lists the file and the files with its bytecode cache. See *Source files and bytecode cache* for more information. * `%{py_provides python3-MODNAME}` > XXX See *The `%python_provide` macro* for more details. * `%{py_byte_compile INTERPRETER PATH}` > XXX`%{python3_byte_compile PATH}` XXX? Byte-compile a Python file into a `__pycache__/*.pyc`. See [Manual byte compilation](https://docs.fedoraproject.org/en-US/packaging-guidelines/Pyth… in the Appendix for usage. * `%{py_dist_name PROJECTNAME}` Given a *project name* (e.g. `PyYAML`) it will convert it to the canonical format (e.g. `pyyaml`). See *Canonical project name* for more information. * `%{py3_dist PROJECTNAME …}` Given one or more *project names*, it will convert them to the canonical format and evaluate to `python3dist(DISTNAME)`, which is useful when listing dependencies. See *Machine-readable provides* for more information. ### System Settings The following macros can be redefined for special use cases. Most of such cases are unacceptable in Fedora. * `%{__python}` (`/usr/bin/python`) Defining this macro changes the meaning of all “unversioned” Python macros such as `%{python}` or `%{python_sitelib}`. Don’t use these macros without redefining `%{__python}`. * `%{__python3}` (`/usr/bin/python3`) The python 3 interpreter. Redefining this macro changes all the `%{python3...}` macros, e.g. `%{python3_sitelib}`. * `%{python3_pkgversion}` (`3`) Distro-wide Python version, i.e. the `3` in `python3`. Projects that build on top of Fedora may define it to e.g. `3.9` to try allowing multiple Python stacks installable in parallel. ### XXX Conditionals? > XXX How to properly express: "if python_version >= 3.8"? > The current way is comparing integers from %python3_version_nodots, but that will break with 3.10/4.0 comparsion. > Do a Lua macro that splits the versions and compares them? > This looks more general, is there something in RPM we can use? ### Disabling automation The following macros can turn off Python-specific automation. Consider contacting the Python SIG if you need to do this. * `%{?python_disable_dependency_generator}` Disables the automatic dependency generator. See *Automatically generated dependencies* for details. * `%__pythonname_provides` > XXX undefine to disable %python-provides generator * `%__pythondist_requires` > XXX undefine to disable %python3dist generator ### Deprecated Macros The following macros are deprecated. See the *201x-era Python Packaging guidelines* (XXX link) for how some of them were used. * `%py3_build` * `%py3_build_wheel` * `%py3_build_egg` * `%py3_install` * `%py3_install_wheel` * `%py3_install_egg` * `%py3dir` * `%py3_other_build` * `%py3_other_install` * `%python_provide` (without `s` at the end) > XXX: `%pyX_build` breaks shebang when upstream already uses some flags (https://bugzilla.redhat.com/show_bug.cgi?id=1335203) -- should we document this in the old guidelines? ## Reviewer checklist > After the guidelines are done, distill the **MUST**s/**SHOULD**s here. > XXX: Do we need a checklist at all? > How do we keep it updated (which hasn't happened in the last N years)

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Re: [HEADS UP] Fedora 35 Python 3.10 rebuilds have started in a side tag
by Miro Hrončok 14 Jun '21

14 Jun '21

On 14. 06. 21 14:40, Alexander Bokovoy wrote: > On ma, 14 kesä 2021, Miro Hrončok wrote: >> On 14. 06. 21 13:40, Alexander Bokovoy wrote: >>> On ma, 14 kesä 2021, Victor Stinner wrote: >>>> Congrats, that's amazing! :-) Let's fix remaining broken packages! >>> >>> Right now the biggest broken package to us (FreeIPA) is mod_wsgi which >>> relied on Python C API which was removed in Python 3.10. The same API >>> was used by uWSGI as well, so it would really be great if Python core >>> developers and Python maintainers team could have helped mod_wsgi/uWSGI >>> upstreams to migrate from the old API. >>> >>> Sadly, this was only found after the fact when a side-tag was already >>> merged, so FreeIPA right now is broken in Fedora Rawhide. >> >> The problem in mod_wsgi was actually found and reported in November 2020 [1], >> which is exactly why we test with each pre-release of Python: To report >> problems *early* and give maintainers time to fix them, so we can land the >> new version with limited negative impact. >> >> Unfortunately, the mod_wsgi maintainer did not respond to the problem :( >> While we try really hard, we cannot report each failure to upstreams directly. >> >> The fact that this blocks FreeIPA was indeed only discovered by chance while >> the side tag rebuild was already in progress (and about to be merged). I >> wonder haw can we improve the process to ensure problems like this are known >> to FreeIPA maintainers since the beginning and prioritized accordingly. >> (Ideally, the process would not only be improved for FreeIPA but the entire >> distro.) > > Well, this is a dependency problem in the first place. When an ABI > change happens, like a Python ABI change with 3.10 mass-rebuild, it > should be assumed and expected that until all previously successfully > built packages were to be rebuilt, there will be broken dependencies. Yes, however getting "all previously successfully built packages rebuilt" is an impossible goal. Instead we strive to get "most of them rebuilt" and "the important ones rebuilt". Getting most of them rebuilt is not an easy task but at least is is quite easy to quantify: 3333 are rebuilt, 293 to go, that is ~91%. OTOH knowing what is "important" is hard. There is the "critical path" thing (but mod_wsgi is not in it and the list seems heavily outdated). > Perhaps, we could extend our existing checks for a broken compose to be > done on a side-tag on demand? This way mass-rebuilders could ask for > such a run one they consider to be ready to merge and see how that > side-tag merge would affect the distribution. I don't think we have a > better way to detect it before the merge. We try hard not to break the compose. It is not fully automated and having a way to run a test compose would be awesome. However, this particular problem does not break the compose, the compose is done now even when mod_wsgi is not installable. We have also validated the following groups are installable before merging the side tag: @anaconda-tools @base-x @cloud-server-environment @container-management @core @domain-client @firefox @fonts @guest-agents @headless-management @input-methods @kde-apps @kde-desktop-environment @kde-media @libreoffice @multimedia @networkmanager-submodules @printing @server-product @standard @workstation-product-environment Because we parsed them from the hopefully compsoe-blocking media kickstarts. > What I do not see as acceptable is what Python core team did in November > 2020 when this issue was made clear in the original PR to remove the > 'old' parser that broke mod_wsgi/uWSGI/unbound and some more packages. > Instead of following up in providing a supported API function, the > comment[1] from Victor was practically ignored. I am not happy either that Python upstream keeps breaking things and often the migration path is "go figure". Whenever and wherever I can, I argue against that :( >> I assume that opening bugzillas for all the dependent packages for each >> failure would be considered as spam by many. > > It depends on what that bug opening would mean. If you are doing it > early together with an upstream that breaks its ABI/API, helping them to > see the issues early is one of your goals -- as you stated above. > Realizing through reverse dependencies a damage such breakage could > cause is something you (as Python maintainers in Fedora) could > definitely do and raise the issue earlier also with the package > maintainers/upstreams. In this case FreeIPA is affected but we missed it > completely in November 2020 as nobody told us mod_wsgi would not work > anymore. This is a chicken-egg problem: Until we measure the impact, we don't know it. And reporting many dependent-packages bugzillas early seems like a waste of effort if the bug is getting fixed soon. What we need to detect (and we don't know how to automate that yet) is: - a bugzilla for a problem is stalled AND - the package is dependent on by "important stuff" or by a large stack Even when not automated, we manually rise priorities for bugzillas that block the builds of large stacks. What would be particularity helpful would be if *all* the package maintainers triaged their bugzillas and responded to them in timely manner, notify upstreams and ask for help if they need it. However, that is not realistic. >> In the meantime, I've marked mod_wsgi as "blocker" for the Python 3.11 >> rebuild next year, but that is not a systematic solution. >> >>> I saw that there is some discussion and an effort to help mod_wsgi >>> upstream already, thank you! >> >> There is a proposed fix [2] but we don't know enough about Apache to say if >> it is ideal. In case this blocks you very much, I suggest you work with the >> Fedora's mod_wsgi maintainer and backport this patch to rawhide, keeping an >> eye on it in case it breaks your use cases, and report problems to us, so we >> can adapt it. At this point of the Fedora 35 development schedule, I think >> this patch should be good enough for it. > > I already nominated mod_wsgi bug as Fedora 35 beta release blocker > because it violates Fedora Server release criteria[2]. I am not a > maintainer for mod_wsgi myself and have no rights to that package. I know and I voted +1 for a blocker. I am not a maintainer for mod_wsgi either. -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

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Re: [HEADS UP] Fedora 35 Python 3.10 rebuilds have started in a side tag
by Miro Hrončok 14 Jun '21

14 Jun '21

On 14. 06. 21 13:40, Alexander Bokovoy wrote: > On ma, 14 kesä 2021, Victor Stinner wrote: >> Congrats, that's amazing! :-) Let's fix remaining broken packages! > > Right now the biggest broken package to us (FreeIPA) is mod_wsgi which > relied on Python C API which was removed in Python 3.10. The same API > was used by uWSGI as well, so it would really be great if Python core > developers and Python maintainers team could have helped mod_wsgi/uWSGI > upstreams to migrate from the old API. > > Sadly, this was only found after the fact when a side-tag was already > merged, so FreeIPA right now is broken in Fedora Rawhide. The problem in mod_wsgi was actually found and reported in November 2020 [1], which is exactly why we test with each pre-release of Python: To report problems *early* and give maintainers time to fix them, so we can land the new version with limited negative impact. Unfortunately, the mod_wsgi maintainer did not respond to the problem :( While we try really hard, we cannot report each failure to upstreams directly. The fact that this blocks FreeIPA was indeed only discovered by chance while the side tag rebuild was already in progress (and about to be merged). I wonder haw can we improve the process to ensure problems like this are known to FreeIPA maintainers since the beginning and prioritized accordingly. (Ideally, the process would not only be improved for FreeIPA but the entire distro.) I assume that opening bugzillas for all the dependent packages for each failure would be considered as spam by many. In the meantime, I've marked mod_wsgi as "blocker" for the Python 3.11 rebuild next year, but that is not a systematic solution. > I saw that there is some discussion and an effort to help mod_wsgi > upstream already, thank you! There is a proposed fix [2] but we don't know enough about Apache to say if it is ideal. In case this blocks you very much, I suggest you work with the Fedora's mod_wsgi maintainer and backport this patch to rawhide, keeping an eye on it in case it breaks your use cases, and report problems to us, so we can adapt it. At this point of the Fedora 35 development schedule, I think this patch should be good enough for it. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1898158#c0 [2] https://github.com/GrahamDumpleton/mod_wsgi/pull/688 -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

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[HEADS UP] Fedora 35 Python 3.10 rebuilds have started in a side tag
by Tomas Hrnciar 14 Jun '21

14 Jun '21

Hello, in order to deliver Python 3.10, we are running a coordinated rebuild in a side tag. https://fedoraproject.org/wiki/Changes/Python3.10 If you see a "Rebuilt for Python 3.10" (or similar) commit in your package, please don't rebuild it in regular rawhide. If you need to, please let us know, so we can coordinate. If you'd like to build the package, you should be able to build it in the side tag via: on branch rawhide: $ fedpkg build --target=f35-python $ koji wait-repo f35-python --build <nvr> Note that it will take a while before all the essential packages are rebuilt, so don't expect all your dependencies to be available right away. When in trouble, ask here or on IRC (#fedora-python on Libera.Chat). Builds: https://koji.fedoraproject.org/koji/builds?latest=0&tagID=f35-python&order=… Please avoid any potentially disturbing changes in Python packages until the rebuild is over. Thanks. Let us know if you have any questions. PS: I've BCC'ed maintainers of the "initial bootstrap sequence". If your package is listed below, it means it is essential that you coordinate all rawhide changes -- if you don't, this may potentially make the disturbing experience longer than necessary. Thank You so much for your patience. Maintainers by package: Cython churchyard ignatenkobrain nbecker stevetraylen GitPython athoscr dgoodwin ignatenkobrain lsedlar PyQt4 rdieter than PyYAML jeckersb abrt abrt-team mgrabovs mmarusak anaconda anaconda-maint jkonecny m4rtink rvykydal sbueno vpodzime vponcova asciidoc fab jridky nphilipp tmz automake jjanco kasal panovotn praiskup ttomecek babel fschwarz nphilipp boost denisarnaud jwakely trodgers breezy churchyard opohorel brotli carlwgeorge pouar tagoh clang airlied daveisfera sbergmann sergesanspaille siddharths tstellar cloud-init dustymabe gholms larsks mhayden otubo createrepo_c dmach jrohel mblaha pkratoch tmlcoch dblatex alexlan jchaloup mjg dbus-python alexl amigadave besser82 caillon caolanm mbarnes ngompa phuang rdieter rhughes rstrode ssp stefanok vtrefny dnf dmach jmracek jrohel mblaha pkratoch dnf-plugins-core dmach jmracek mblaha pkratoch dnf-plugins-extras dmach jmracek mblaha pkratoch fedmod karsten nphilipp fedmsg ralph fedora-messaging abompard file kdudka 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python-click-completion chedi wakko666 python-clikit thrnciar python-colander ignatenkobrain lmacken ralph python-colorama fale mrunge python-configobj dcallagh fale lmacken terjeros python-constantly eclipseo python-contextlib2 abompard pingou ralph tjikkun python-convertdate fab python-cornice hguemar lmacken python-cornice-sphinx abompard python-cov-core abompard bkabrda python-coverage abompard lmacken mrunge spot python-cppy qulogic python-cpuinfo pnemade python-crashtest thrnciar python-crochet abompard python-cryptography cheimes jcline noodles npmccallum python-cssselect brouhaha echevemaster kevin ralph python-curio carlwgeorge python-cycler nbecker python-daemon kushal lmacken ralph tomspur xavierb python-dateparser fab limb python-dateutil hguemar jspaleta limb pjp tomspur python-decorator fale kevin ralph python-defusedxml bkabrda churchyard python-dict-sorted fale ignatenkobrain python-dill sergiopr python-distlib cottsay cstratak python-distro mblaha msuchy python-django bkabrda churchyard jdornak mrunge rdopiera salimma sgallagh python-dns aviso lbalhar louizatakk pspacek pwouters python-docs-theme ksurma python-docutils churchyard python-dogpile-cache ralph python-dulwich fab python-editor apevec kevin ralph social python-elementpath churchyard thrnciar python-enchant cstratak python-entrypoints nonamedotc orion python-ephem fab python-execnet adeza ktdreyer thm python-extras mrunge salimma python-factory-boy jorti python-faker jorti python-fastimport dcallagh python-fastjsonschema thrnciar python-fedora codeblock ricky python-feedgen lbalhar python-fields cottsay python-filelock cottsay python-fixtures apevec mrunge pabelanger python-flaky churchyard python-flask codeblock frantisekz hguemar hushan python-flit churchyard python-fluidity-sm pghmcfc python-freezegun cstratak kevin ralph python-genshi fschwarz python-genty churchyard python-gevent dcallagh ignatenkobrain orion skottler python-gitdb athoscr ignatenkobrain lsedlar python-graphviz eclipseo python-greenlet abbot ignatenkobrain kevin salimma terjeros python-gssapi rharwood simo python-h11 carlwgeorge python-h2 eclipseo python-hamcrest ignatenkobrain python-hpack eclipseo python-html5lib churchyard pjp sagitter salimma sundaram python-httpbin adamwill python-httpcore fab python-httplib2 abompard dchen ignatenkobrain jspaleta kevin limb python-httpretty jpopelka python-httpx fab python-humanize jfilak stevetraylen python-hupper kevin python-hyperframe eclipseo python-hyperlink eclipseo python-hypothesis churchyard dcavalca ignatenkobrain pingou salimma python-idna churchyard cstratak lbalhar python-imagesize aviso python-incremental ykarel python-iniconfig churchyard python-iniparse ignatenkobrain lupinix python-invoke pghmcfc python-ipykernel churchyard pcpa python-ipython_genutils orion python-ipywidgets lbalhar python-iso8601 fab ilianaw python-isodate dcallagh dscott jlaska jmatthews python-isort limb orion python-itsdangerous dcallagh ignatenkobrain python-jaraco-classes jcaratzas radez python-jaraco-collections mrunge python-jaraco-envs cstratak python-jaraco-functools jcaratzas radez python-jaraco-packaging jcaratzas radez python-jaraco-path thrnciar python-jaraco-text mrunge python-jedi carlwgeorge lbalhar python-jeepney goeran python-jinja2 thm python-jmespath fale gholms kevin lkundrak python-jsonpatch apevec dprince skottler python-jsonpointer agerstmayr dprince mgoodwin nathans skottler python-jsonschema apevec python-jupyter-client churchyard tomspur python-jupyter-core churchyard orion tomspur python-jupyterlab_pygments nonamedotc python-jwt carlwgeorge kevin ralph python-kerberos rcritten simo python-keyring apevec cicku ctubbsii ignatenkobrain robert rtnpro python-kitchen kevin pingou ralph python-kiwisolver qulogic python-kombu fab frantisekz mrunge ngompa pingou pjp sundaram python-lark-parser totol python-latexcodec jjames python-lazy-object-proxy bcl limb lupinix python-ldap abbra alexl caillon caolanm cheimes pspacek rhughes rstrode ssp python-lexicon pghmcfc python-lit sergesanspaille tstellar python-lockfile kevin moezroy thrnciar xavierb python-lxml fale ignatenkobrain mizdebsk python-m2r nforro python-mako abompard cverna ignatenkobrain kylev lmacken python-markdown thm python-markdown-it-py ksurma lbalhar python-markupsafe churchyard python-matplotlib cstratak jgu jspaleta pcpa qulogic rathann tomspur python-matplotlib-inline lbalhar python-mccabe churchyard python-mdit-py-plugins ksurma lbalhar python-meh clumens m4rtink vpodzime python-memcached apevec hguemar kevin sgallagh python-mimeparse abompard carlwgeorge stevetraylen python-mistune lupinix python-mock churchyard ttorling python-moksha-common lbalhar lmacken ralph python-moksha-hub lbalhar lmacken ralph python-monotonic apevec hguemar python-more-itertools aarem churchyard jcaratzas python-msgpack dfateyev fab ktdreyer pjp sundaram python-multidict athmane fab ignatenkobrain python-multilib jgreguske lsedlar python-munch kevin ralph python-mypy_extensions ignatenkobrain python-myst-parser ksurma lbalhar python-nbclient nonamedotc python-nbconvert nonamedotc python-nbformat orion tomspur python-nbsphinx churchyard ksurma python-nest_asyncio nonamedotc python-nose churchyard python-nose-cov jdulaney python-nose-cover3 mrunge ngompa pingou python-nose-exclude mrunge python-nose2 abompard python-notebook churchyard ksurma python-ntplib vpodzime python-numexpr tnorth zbyszek python-numpydoc orion tomspur python-oauthlib jdornak ralph python-olefile rebus robert smani python-openid-cla puiterwijk python-openid-teams puiterwijk python-openidc-client mohanboddu python-openstackdocstheme jpena python-ordered-set msuchy python-orderedset vtrefny python-outcome carlwgeorge python-packaging lbalhar python-pandas kushal orion sergiopr wakko666 python-pandocfilters zbyszek python-parameterized ignatenkobrain python-paramiko athmane ignatenkobrain ivazquez orion pghmcfc sgallagh python-parso carlwgeorge python-paste 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jkaluza mprahl python-prompt-toolkit carlwgeorge fale python-psutil salimma python-psycopg2 devrim hhorak jmlich panovotn praiskup python-ptyprocess ignatenkobrain orion tomspur python-py mrunge thm python-pyasn1 kanarip rcritten python-pybtex jjames python-pybtex-docutils jjames python-pycdlib clalance python-pycodestyle churchyard orion python-pycparser brouhaha churchyard lbalhar python-pycurl jsynacek kdudka msekleta svashisht python-pydbus m4rtink python-pyface chedi ignatenkobrain orion python-pygments churchyard smilner python-pygments-pytest churchyard jcaratzas python-pylev thrnciar python-pylibravatar kevin ralph python-pylons-sphinx-themes abompard python-pymeeus fab python-pymongo amcnabb apevec cstratak hhorak mskalick python-pynacl dciabrin ignatenkobrain python-pyquery kevin ralph python-pyramid kevin lmacken ralph rossdylan tdabasin python-pyramid-fas-openid abompard python-pyramid-mako kevin ralph python-pyroute2 jirka pavlix psavelye python-pyrsistent decathorpe 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libreport moezroy python-lockfile python-polib mohanboddu python-openidc-client mprahl python-prometheus_client python-stomper mrceresa vtk mrunge ipython pytest python-astroid python-beautifulsoup4 python-billiard python-bleach python-case python-celery python-cherrypy python-colorama python-coverage python-django python-extras python-fixtures python-jaraco-collections python-jaraco-text python-kombu python-nose-cover3 python-nose-exclude python-pbr python-pluggy python-py python-selenium python-simplejson python-six python-termcolor python-testrepository python-testscenarios python-tox python-vine python-virtualenv python-webob msekleta python-pycurl mskalick python-pymongo msrb python-argcomplete msuchy mock python-distro python-ordered-set python-templated-dictionary rpmconf mulhern python-pyudev music python-pyrsistent nacho libgit2-glib pygobject3 nathans python-jsonpointer nbecker Cython mercurial python-cycler ncoghlan python-pip nforro python-m2r python-setuptools_scm_git_archive scipy ngompa dbus-python libsolv python-billiard python-case python-celery python-kombu python-nose-cover3 python-pika python-vine python-zope-configuration python-zope-i18nmessageid nonamedotc python-entrypoints python-jupyterlab_pygments python-nbclient python-nbconvert python-nest_asyncio python-pickleshare noodles python-cryptography nphilipp asciidoc babel fedmod libmodulemd pdc-client python-rdflib python-sqlalchemy npmccallum python-asn1crypto python-cryptography odubaj file ondrejj python-WSGIProxy2 python-transaction python-webtest onosek pungi rpkg opohorel breezy python-patiencediff python-sphinx-epytext orion numpy openmpi python-Traits python-astroid python-backcall python-entrypoints python-gevent python-ipython_genutils python-isort python-jupyter-core python-nbformat python-numpydoc python-pandas python-paramiko python-process-tests python-ptyprocess python-pycodestyle python-pyface python-sphinx-gallery python-sphinx-theme-alabaster 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python-chai python-colander python-contextlib2 python-cssselect python-daemon python-decorator python-dogpile-cache python-editor python-freezegun python-jwt python-kitchen python-moksha-common python-moksha-hub python-munch python-oauthlib python-paste-deploy python-pylibravatar python-pyquery python-pyramid python-pyramid-mako python-pysocks python-redis python-requests python-service-identity python-simplemediawiki python-stomper python-txws python-txzmq python-vcrpy python-venusian python-waitress python-webob python-wrapt python-xmltodict python-zc-lockfile python-zmq python-zope-component python-zope-event python-zope-exceptions python-zope-i18nmessageid python-zope-interface python-zope-schema python-zope-testing python3-py3dns raphgro python-SecretStorage python-amqp rathann python-matplot

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How to track the build failure built on f35-python
by Chenxiong Qi 08 Jun '21

08 Jun '21

Hi, I just noticed that python-social-auth-core-4.1.0-2.fc35 keeps failing to build on f35-python. I'm wondering if there is any mechanism to report a bug in Bugzilla automatically, or how do we usually track such failure? Thanks. -- Regards, Chenxiong Qi

3 3

Re: [HEADS UP] Fedora 35 Python 3.10 rebuilds have started in a side tag
by Miro Hrončok 07 Jun '21

07 Jun '21

On 07. 06. 21 19:27, Richard W.M. Jones wrote: > On Mon, Jun 07, 2021 at 07:14:06PM +0200, Miro Hrončok wrote: >> Hello package maintainers, >> >> The following packages have been rebuilt in Rawhide while the Python >> 3.10 rebuild is still in progress: >> >> libnbd > > Ah... > >> Please, do not build Python packages in Rawhide unless it is time >> sensitive. If you need to upgrade your package, wait until the >> rebuild is over or build them in the f35-python side tag. > > Looks like you've rebuilt it in the side tag, so we're OK? Yes, we are OK now, just please don't build it in rawhide again, so we don't have to play "what build is the latest one" game :D Thanks, -- Miro Hrončok -- Phone: +420777974800 IRC: mhroncok

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python-devel June 2021