Add epel and epel-testing repos to the EPEL 10 config

mock-core-configs/etc/mock/epel-10-aarch64.cfg

@@ -0,0 +1 @@
+centos-stream+epel-10-aarch64.cfg

mock-core-configs/etc/mock/epel-10-ppc64le.cfg

@@ -0,0 +1 @@
+centos-stream+epel-10-ppc64le.cfg

mock-core-configs/etc/mock/epel-10-s390x.cfg

@@ -0,0 +1 @@
+centos-stream+epel-10-s390x.cfg

mock-core-configs/etc/mock/epel-10-x86_64.cfg

@@ -0,0 +1 @@
+centos-stream+epel-10-x86_64.cfg

mock-core-configs/etc/mock/templates/centos-stream-10.tpl

@@ -1,6 +1,7 @@
 config_opts['chroot_setup_cmd'] = 'install bash bzip2 centos-stream-release coreutils cpio diffutils findutils gawk glibc-minimal-langpack grep gzip info patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz'
 config_opts['dist'] = 'el10'  # only useful for --resultdir variable subst
 config_opts['releasever'] = '10'
+config_opts['releasever_major'] = '10'
 config_opts['package_manager'] = 'dnf'
 config_opts['extra_chroot_dirs'] = [ '/run/lock', ]
 config_opts['description'] = 'CentOS Stream 10'

mock-core-configs/etc/mock/templates/epel-10.tpl

@@ -2,10 +2,39 @@ config_opts['chroot_setup_cmd'] += " epel-rpm-macros"
 
 config_opts['dnf.conf'] += """
 
+# The metalinks below differ from the ones used in epel-release.  The
+# epel-release metalinks rely on a dnf variable expansion feature that is only
+# available since dnf 4.18.0.  In some configurations mock will be using the
+# host dnf to bootstrap the chroot, which could be older and lack those
+# features, leading to problems.  The alternative is to use this simplified
+# metalink here in this template for CentOS Stream, and a different metalink in
+# another template for RHEL.
+
+[epel]
+name=Extra Packages for Enterprise Linux $releasever - $basearch
+metalink=https://mirrors.fedoraproject.org/metalink?repo=epel-{{ releasever_major }}&arch=$basearch
+gpgkey=file:///usr/share/distribution-gpg-keys/epel/RPM-GPG-KEY-EPEL-{{ releasever_major }}
+gpgcheck=1
+countme=1
+
+[epel-testing]
+name=Extra Packages for Enterprise Linux $releasever - Testing - $basearch
+metalink=https://mirrors.fedoraproject.org/metalink?repo=testing-epel{{ releasever_major }}&arch=$basearch
+gpgkey=file:///usr/share/distribution-gpg-keys/epel/RPM-GPG-KEY-EPEL-{{ releasever_major }}
+gpgcheck=1
+countme=1
+enabled=0
+
+{% if koji_primary_repo == "epel" %}
+
+# The baseurl below is a symlink in the koji infrastructure that moves forward
+# over time to the buildroot repo of the latest minor verison tag.
+
 [local]
 name=Extra Packages for Enterprise Linux $releasever - Koji Local - BUILDROOT ONLY!
-baseurl=https://kojipkgs.fedoraproject.org/repos/epel10.0-build/latest/$basearch/
+baseurl=https://kojipkgs.fedoraproject.org/repos/epel{{ releasever_major }}/centos/$basearch/
 cost=2000
-enabled=1
+enabled=0
 skip_if_unavailable=False
+{% endif %}
 """

releng/release-notes-next/epel10-metalinks.config.md

@@ -0,0 +1,3 @@
+The EPEL 10 configuration has been updated to include the epel and epel-testing
+repos with the appropriate metalinks.  Previously it only included the koji
+local repo.