ellert added a new comment to an issue you are following:
``
You plan is to use the epel-playground repo for two very different and incompatible
tasks.
The first usecase is as a playground where maintainers can try out new versions and new
features. This means that the versions of packages in the epel-playground are allowed to
be different from the versions in epel, might have additional features enabled that the
versions in epel are missing, and occasionally could even be backward incompatible with
the version i epel or have a different soname for libraries.
The second usecase is as a place to do mass rebuilds for new rhel point releases, where
you plan to change the rhel base to a new point release in epel-playgroind, do the
rebuilds in epel-playground, and the when you change th epel repo to the new point release
merge the mass rebuilt packages back to epel. But, since the use case for the playground
repository was to be a place where new unstable stuff is tested, all those rebuilds will
have been built against these new versions and might depend on features that are not
provided by the dependencies that are in epel, or be compiled to depend on a different
soname than the library that is available in epel.
I.e. since the playground is a playground, packages built in the playground must never be
merged into main epel.
In Fedora there are rebuilds all the time. For new python versions, for new perl versions,
and the recurring mass rebuilds. These are done in side tags. This can be done without
adding a package.cfg file allowing the build of the package in the side tag, but koji
allows this by default.
The proper way to do a mass rebukd for epel8 is to declare an epel8-rebuild sidetag that
inherits from the rhel 8.n+1 and epel8 and definitely must not inherit from
epel8-playground. The packages built in this sidetag can then be safely merged into epel8,
when epel8 is redefined to inherit from rhel 8.n+1. And since it is a sidetag there should
be no need to add any special package.cfg since this is not needed for sidetags in
fedora.
``
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https://pagure.io/releng/issue/8582