On 4/7/21 2:21 PM, Tomas Orsava wrote:
On 4/7/21 12:45 PM, Panu Matilainen wrote:
On 4/7/21 1:12 PM, Tomas Orsava wrote:
On 4/7/21 11:38 AM, Panu Matilainen wrote:
On 4/7/21 12:06 PM, Miro Hrončok wrote:
On 07. 04. 21 10:45, Panu Matilainen wrote:
I'm starting to think the right thing to do is to move %check to run after %build rather than %install. That would completely eliminate arguments over what is proper use and should this or that be done etc.

This is what I don't understand: The current %exclude change is backwards incompatible and breaks things. How does breaking it even more help this problem?

Because they kinda go together: the %exclude change revealed that %check is being used in ways it wasn't really intended to be used - just like %exclude was - and both "abuses" come with unwanted side-effects (note quotes, while I know the internal intention, the intended uses were never clearly documented anywhere)

 Further rationale at https://github.com/rpm-software-management/rpm/pull/1618


I understand wanting a perfect system, but I think it's important to realize that rpm is a tool for maintainers to simplify their life and make packaging other software possible.

What you're proposing now is to break thousands of packages with no advanced warning, no migration path, just because they're using rpm in a way that wasn't predicted.

Please don't do this.

If you really want to introduce such backwards incompatible changes, please first work with us maintainers on the migration path and a reasonable timeline to do so.

Isn't that exactly what we're doing here?

The %check PR may or may not go in, it was linked here so people have a chance to discuss it. Because there's this just discovered linkage between %exclude and %check uses, it probably makes sense for them to go in together. Which could mean doing both, or neither, in 4.17. As in, reverting the %exclude change in 4.17 is entirely possible if it makes sense in the grand scheme things.

We cannot possibly know what all the tens of thousands of packages out there are doing, and people will only ever wake up when the change is about to hit them. We've done a dozens of similar changes not because it's fun or because I enjoy getting yelled at for breaking their stuff but because there's no other way to fix ambiguity than making it unambiguous.

You're right, knowing the scope of the breakage in advance is just not possible. We have similar problems with Python, but given the nature of RPM, you've got it even tougher. I really apologize if it felt like yelling, that was not my intention.

No worries. Didn't mean to imply *you* were yelling, this has been entirely civil as far as I'm concerned. I was just referring to years of battling these issues: for every little loophole in rpm we close in order to make it saner we get a backslash, and not always so civilized. It just gets tiresome sometimes. I'm sure you know the feeling. I myself was kicking and screaming through most of the Python 3 transition, so been on the other side of it too :)


However, I hope you'll understand why I felt a certain urgency when writing my response. From my own packaging experience the change would break a lot of usage, and other people on this thread only reinforced that this would be a major problem in many areas. And so when I saw that the follow up to this discussion was a PR that would break even more use cases, I grew worried.

Yes, message heard. This has been an important discussion to have because it revealed various things I had no idea about, in particular the %exclude linkage to %check.

On the other hand, I understand where you're coming from: we have fought battles with unintended use of our tools too (e.g. sudo pip breaking dnf). But given the scope of the breakage here, I would advocate for postponing this change for now. It seems none of us is sure how to square this circle at the moment.

Nod. I'll need to sleep on this all a bit.

        - Panu -
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