The metadata/rpms.json files I included for testing purpose are from actual ELN composes. They're awfully big. Any thoughts for safely trimming them down in size?

Hmmm... How does one get the compose-utils package installed so the compose-diff-rpms command exists? When I try adding it to requirements.txt, I get "ERROR: No matching distribution found for compose-utils"

I will ask @lsedlar if compose-utils could be included in pypi. But if not, we will have to ask jenkins admins to install compose-utils on F29 Jenkins slave.

@jkaluza In my last two commits, I manually stripped down the metadata from earlier snapshots of actual ELN composes, adjusted them to make for slightly more interesting output, and adjusted the compose compare test accordingly. If you like what you see here so far, I'll squash my commits so the full-sized compose metadata doesn't get carried in the git history when merged into the master branch.

It looks good ;).

@jkaluza This PR now includes the improvement to generate composes in parallel, and it has been rebased onto PR #9. Let me know what you think! Thanks.

I added another commit to fix a problem I keep running into while testing interactively using Kerberos authentication. It avoids having to run kdestroy -A (and maybe kinit) when switching between running cccc and anything else that authenticates using Kerberos.

+1