https://fedoraproject.org/wiki/Changes/Remove_Python2_RPM_Macros == Summary == The {{package|python2-rpm-macros}} package (containing `/usr/lib/rpm/macros.d/macros.python2`) will be removed from Fedora 34 and newer. The python2 RPM macros will ceases to exist. Python 2 packages are already not allowed. Around a dozen of packages use the macros in Fedora and will need to be adjusted either by expanding them or by no longer using Python 2. The `python2.7dist()` and `python2dist()` automatic provides/requires will no longer be automatically generated. == Owner == * Name: [[User:Churchyard|Miro Hrončok]] * Email: mhroncok@xxxxxxxxxx == Detailed Description == Python 2 is upstream dead, usage in Fedora packages is forbidden, except for several package with an explicit FESCo approved exception. The Python Maintenance team no longer wishes to support the python2 RPM macros from the {{package|python2-rpm-macros}} package (located at `/usr/lib/rpm/macros.d/macros.python2`) and hence decided to remove the package. The following macros will be undefined: %{python2_sitelib} %{python2_sitearch} %{python2_version} %{python2_version_nodots} %{python2_platform} %{py2_shbang_opts} %{py2_shbang_opts_nodash} %{py2_shebang_flags} %py2_shebang_fix %py2_build %py2_build_egg %py2_build_wheel %py2_install %py2_install_egg %py2_install_wheel The following macros will remain defined for the time being to not break packages that are using Python 2 as build-time only dependency (which is also not allowed, but happens more often): %{__python2} %{python2} The [https://docs.fedoraproject.org/en-US/packaging-guidelines/Python_Appendix/#_python_2_packages Python 2 section of Python packaging guidelines] will be removed. {{package|python2.7}} will no longer require {{package|python2-rpm-macros}} and {{package|python3-rpm-generators}}. Provides/requires like this will no longer be automatically generated: python2dist(...) python2.7dist(...) The changes will happen after the Fedora 34 mass rebuild and before branching. Packages that used to use those macros in Fedora will need to be adapted to expand the macros or switch to Python 3. In January 2021, we have: * several Python 2 trac plugins, but {{package|trac}} uses Python 3 now ** only those require `python2dist(...)` * several Python 2 sugar packages, but they already don't build and/or install as {{package|sugar}} uses Python 3 now * 13 other affected packages in Fedora (some of them co-owned by Python Maint): ** avahi ** gimp-layer-via-copy-cut ** gimp-resynthesizer ** chromium ** NFStest ** offlineimap ** pygobject2 ** pygtk2 ** python-psutil ** python-six ** python2-cairo ** python2-dns ** python2-setuptools Note: Many other packages use the macros in a disabled `%if` section. Some of the listed ones might as well (and hence are not really impacted), the list is an intersection of packages that (Build)Require Python 2 and are greppable for the macros. The removed macros and migration plan: === %{python2_sitelib} === Affected Fedora packages: * avahi * NFStest * offlineimap * python2-dns * python2-setuptools * python-six Migration plan if not possible to switch to Python 3 / retire: Use `%{_prefix}/lib/python2.7/site-packages`. === %{python2_sitearch} === Affected Fedora packages: * chromium * offlineimap * pygobject2 * pygtk2 * python2-cairo * python-psutil Migration plan if not possible to switch to Python 3 / retire: Use `%{_libdir}/python2.7/site-packages`. === %{python2_version} === Affected Fedora packages: * offlineimap * pygtk2 * python2-setuptools Migration plan if not possible to switch to Python 3 / retire: Use `2.7`. === %{python2_version_nodots} === No affected Fedora packages. Migration plan: Use `27`. === %{python2_platform} === No affected Fedora packages. Migration plan: Use a glob like `linux-*`. === %{py2_shbang_opts}, %{py2_shbang_opts_nodash}, %{py2_shebang_flags}, %py2_shebang_fix === Affected Fedora packages: * gimp-layer-via-copy-cut * gimp-resynthesizer * offlineimap All use `pathfix.py -pni "%{__python2} %{py2_shbang_opts}" ...` Migration plan: `pathfix.py -pni "%{_bindir}/python2" -kas ...` === %py2_build, %py2_install === Affected Fedora packages: * NFStest * offlineimap * python2-cairo * python2-dns * python2-setuptools * python-psutil * python-six Migration plan: %build %set_build_flags python2 setup.py build %install python2 setup.py install --skip-build --root %{buildroot} Note: Add additional `sleep 1` after/before the build if you also build for Python 3. === %py2_build_egg, %py2_build_wheel, %py2_install_egg, %py2_install_wheel === No affected Fedora packages. There are no build dependencies in Fedora to build a Python 2 wheel or install it. Migration plan for egg: Please don't use this! %build %set_build_flags python2 setup.py bdist_egg %install python2 -m easy_install -m --prefix %{buildroot}%{_prefix} -Z <path_to_egg> == Benefit to Fedora == We tried to keep the macros as similar to their Python 3 counterparts as possible, but we have decided that it is not worth it for 13 packages. We want to discourage building Python 2 packages. We want to remove the package from RHEL 9 as well. == Scope == * Proposal owners: ** Drop the macros. Disable the `python2dist()`/`python2.7dist()` dependency generators. ** No longer require {{package|python2-rpm-macros}} and {{package|python3-rpm-generators}} from {{package|python2.7}}. ** Fix packages with FESCo exceptions (except already broken trac plugins), leave the other affected packages broken for the maintainers to fix. * Other developers: ** Fix their packages by migrating to Python 3 or expanding the macros. * Release engineering: no impact on Release Engineering is anticipated * Policies and guidelines: the Python 2 guidelines will be deleted * Trademark approval: Not neccessary. * Alignment with Objectives: Not really. == Upgrade/compatibility impact == None. == How To Test == Check the macros are not defined. == Packager Experience == Mildly annoying (for the affected packagers), but expected to be temporary as the number of Python 2 packages constantly decreases. == Dependencies == None. == Contingency Plan == * Contingency mechanism: If this fails, we'll introduce the macros as a separate component and orphan it. * Contingency deadline: Beta freeze * Blocks release? No * Blocks product? No == Documentation == This page is the documentation for the affected packagers. -- Ben Cotton He / Him / His Senior Program Manager, Fedora & CentOS Stream Red Hat TZ=America/Indiana/Indianapolis _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
