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# EPEL-8 Packaging Procedures
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## Introduction
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When a new Red Hat Enterprise Linux occurs, one of the steps to get
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EPEL going for it is branching of various packages into new
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namespace. The EPEL Steering Committee does not mass branch all
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existing packages into the namespace because it has caused multiple
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problems:
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1. The package maintainers did not want to support the package in the
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newer version of EPEL. Package maintainers may only want to support
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certain versions of Enterprise Linux or may want to wait until their
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favourite derivative appears.
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2. The package does not work in the latest version of RHEL. With
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multiple years between releases, software which worked on Fedora 18
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which would branch to EPEL-7 may not exist anymore with Fedora 28 and
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EPEL-8 would need a completely different version.
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## Consumer request for packages
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People who are interested in getting packages into EPEL should contact
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the package maintainer through
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[bugzilla](https://bugzilla.redhat.com/). This allows for the requests
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to be tracked and if the primary maintainer is not interested in
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branching to EPEL, other ones can step in and do so.
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## EPEL Next
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EPEL 8 Next was shut down in June 2024, corresponding to the EOL of CentOS
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Stream 8.
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EPEL 8 Next was a place for maintainers to optionally build against CentOS
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Stream 8 instead of RHEL 8. This was sometimes necessary when CentOS Stream 8
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contains an upcoming RHEL 8 library rebase, or if an EPEL 8 package has a
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minimum version build requirement that is already in CentOS Stream 8 but not
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yet in RHEL 8.
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## EPEL Playground
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EPEL Playground was shut down in January 2022
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EPEL 8 Playground was a place that developers and maintainers could
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"play around" with updated, or changed packages in epel. EPEL Playground
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never really worked out and ended up being more burden than helpful.
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If developers or maintainers want something similar to EPEL Playground
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we recommend Fedora COPR, which has availability for EPEL builds.
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## Developer request for branching multiple packages
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Branching is handled the same way as requesting a branch using `fedpkg
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request-branch`. A maintainer can request an epel8 branch using
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`fedpkg request-branch epel8` which will create a ticket in
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https://pagure.io/releng/fedora-scm-requests/issues and Release
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Engineering will process these requests.
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To branch multiple packages please use this or a variant of this
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script:
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```
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#!/usr/bin/sh
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# Reminder to get an updated pagure token for releng tickets
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# Usage: epel-8.sh foo bar goo blah blech
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if [ $# -lt 1 ]
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then
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echo "At least one package name should be provided"
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else
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TMPDIR=`mktemp -d /tmp/epel8.XXXXXX`
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pushd "$TMPDIR"
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for pkg in "$@"
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do
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fedpkg clone "$pkg"
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pushd "$pkg"
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fedpkg request-branch epel8
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fedpkg request-branch epel8-playground
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popd
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done
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rm -rfv "$TMPDIR"
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fi
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```
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Releng will then work through the tickets in the system which is
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adding branches to the PDC and src.fedoraproject.org.
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## Known Issues
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1. /usr/bin/python does not exist. Choose ``/usr/bin/python3`` or
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``/usr/bin/python2`` and patch appropriately.
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2. ``python2-sphinx`` is not shipped. Most packages should work with
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python3-sphinx, and if it doesn't please open a bug. The python team
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has been good about making fixes for this.
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3. When branching python packages, be aware that python in EL-8 is
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python36 and not the version currently in rawhide. This has come up
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with a couple of test packages where they assumed python37 or later.
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4. ``systemd-rpm-macros`` is not a separate packages. If needed, used
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``BuildRequires: systemd``
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5. While EL-8 comes with platform-python, it should NOT be used in
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``Requires:`` unless absolutely neccessary. python3 should be used
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instead. (Exceptions can be made but will be rare and need
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justification.)
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**Accepted Exceptions:**
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* Use python3.6dist(coverage) instead of python3-coverage. This
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package is not shipped but is needed in %check code.
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6. Sometimes RHEL8 only has a python3 package for a dependency you
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need for your build. (Example: python-bleach requires
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python2-html5lib, but RHEL8 provides only python3-html5lib). For
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EPEL-8.0 we only suggest one choice:
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* Choose not to have the python2 part of your package and patch
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whatever to use python3.
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7. Python2 packages are discouraged. RHEL-8 will contain python2.7
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until probably the end of life of RHEL-7. However support upstream
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will only be minimal. When modularity occurs, we suggest that you make
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whatever python2 packages modules which can be pulled out when
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RHEL-8.N no longer has python2.
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8. While a RHEL src.rpm might produce a -devel package, it may not
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currently be in the build repository. When running into this please
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open a ticket with https://pagure.io/epel/new_issue for us to put in a
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request for it to be added to Red Hat's Code Ready Builder. After
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modularity is enabled, changes to what is done will be needed.
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9. EPEL-8.0 may not work with the RHEL-8.1 beta. There seem to be
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changes in dnf and zchunk which we have not worked out. This line will
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be updated.
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## Definitions
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1. Package maintainer. Person who has accepted responsibility to
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package and maintain software in the Fedora Project ecosystem. The
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main packager is usually someone focused on Fedora Linux, and
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secondary packagers may be focused on particular use cases like EPEL.
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2. Consumer. A person who has subscribed to EPEL for packages but is
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not a maintainer.
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3. PDC. Product Definition Center. A tool to help list the lifetime
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and permissions that a product has so that branching and updates can
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be better managed.
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