Fix CentOS 8 and stream-8 builds.

Review Request #14885 — Created March 7, 2026 and updated

Information

rbinstall
master

Reviewers

There were a handful of issues affecting CentOS 8 and stream-8, both in
the actual installer as well as our test harness:

  • The crb repo used by newer centos releases is called powertools in
    8 and stream-8.
  • There's no epel-next-release repo.
  • For the install tests, we need to update yum to point at
    vault.centos.org because they've removed these from the primary
    mirror.
  • Ran unit tests.
  • Ran install tests for centos8/stream-8.
Summary ID
Fix CentOS 8 and stream-8 builds.
There were a handful of issues affecting CentOS 8 and stream-8, both in the actual installer as well as our test harness: - The `crb` repo used by newer centos releases is called `powertools` in 8 and stream-8. - There's no `epel-next-release` repo. - For the install tests, we need to update yum to point at vault.centos.org because they've removed these from the primary mirror. Testing Done: - Ran unit tests. - Ran install tests for centos8/stream-8.
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