repo-packages[].packages doesn't support syntax of packages

[mtalexan]

Describe the bug

The packages key in a treefile supports listing whitespace-separated package names, package names that attempt to match the NEVRA follwing the dnf file name rules (e.g. kernel-6.9.11-0.fc39), or version query syntax (e.g. "'kernel = 6.9'").

The repo-packages[].packages however only supports names, and does not support either of the other syntax options. This means it's not possible to pin a package to a specific version from a specific repo, you can theoretically only pin a named package to a repo if you're willing to always take the latest version offered by that repo.

Reproduction steps

1. List a specific package version as part of the packages key in a working treefile. Example:

repos:
  - fedora
  - updates
 
packages:
  - "'kernel = 6.9.11'"
  - kernel-headers-6.9.4-100.fc40

2. Verify it works
3. Move the package item to a repo-packages section. Example:

repos:
  - fedora
  - updates
 
repo-packages:
  - repo: updates
    packages:
      - "'kernel = 6.9.11'"
      - kernel-headers-6.9.4-100.fc40

Expected behavior

The configuration works identically, only adding the assurance that the packages came from the specific repo.

Actual behavior

error: Installing packages: Failed to parse selector: 'kernel = 6.9.11'
error: Installing packages: Failed to parse selector: kernel-headers-6.9.4-100.fc40

System details

• Using the latest coreos-assembler container image as of today.
• rpm-ostree --version

rpm-ostree:
 Version: '2024.6'
 Git: 1dda51b264eec8003eb6032f1f41844754ec163b
 Features:
  - rust
  - compose
  - container
  - fedora-integration

Additional information

No response