Description of problem:

RHEL 9 Content Structure and Guidelines state that weak dependencies for packages found in the minimal installation is discouraged.

By using the Recommends weak dependencies especially for packages in @core group (Minimal host installation), the recommended package gets pulled into the installed package set depending on the current configuration of the dnf transaction. That in turn makes the package set that gets evaluated for example for security certifications volatile.

The kexec-tools package now added Recommends for zstd.

If that package is needed by kexec-tools for correct operation, Requires should be used.

If zstd is essential in minimal host installations, it should be listed in the @core group in the comps file, not pulled in as a weak side-effect of having kexec-tools in @core.

If it is listed primarily for convenience, Suggests might be better option. Or just drop the weak dependency completely.

Version-Release number of selected component (if applicable):

kexec-tools-2.0.23-5.el9.x86_64

How reproducible:

Deterministic.

Steps to Reproduce:
1. dnf install -y kexec-tools

Actual results:

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Dependencies resolved.
================================================================================
 Package          Arch     Version                     Repository          Size
================================================================================
Installing:
 kexec-tools      x86_64   2.0.23-5.el9                beaker-BaseOS      501 k
Installing dependencies:
 dracut-network   x86_64   055-10.git20210824.el9      beaker-BaseOS       79 k
 dracut-squash    x86_64   055-10.git20210824.el9      beaker-BaseOS       13 k
 ethtool          x86_64   2:5.10-4.el9                beaker-BaseOS      214 k
 lzo              x86_64   2.10-7.el9                  beaker-BaseOS       69 k
 snappy           x86_64   1.1.8-8.el9                 beaker-BaseOS       37 k
 squashfs-tools   x86_64   4.4-7.git1.el9              beaker-BaseOS      169 k
Installing weak dependencies:
 zstd             x86_64   1.5.0-2.el9                 beaker-AppStream   645 k

Expected results:

zstd not a weak dependency, since kexec-tools is in the @core group.

Additional info:

The kexec-tools Recommends grubby as well. The negative impact of that is mitigated by grubby being listed in the @core group in comps. But it could get removed (or changed to Requires) as well.