Bug#1055392: wasmedge: autopkgtest regression: 'cstdint' file not found

[Faidon Liambotis]

Control: affects 1052002 - wasmedge
Control: affects 1052002 + src:wasmedge

On Thu, Nov 09, 2023 at 09:52:04AM +0100, Paul Gevers wrote:
> > Hi Paul,
> > Thank you for your report. This is caused #1052002, which I had marked
> > as affects: wasmedge previously.
> 
> Sorry for not checking that, but because you marked it as affecting the
> *binary* package wasmedge, it doesn't show up looking for bugs in the source
> package wasmedge (that may be a bts bug). Because this is a FTBFS issue, I
> recommend you to mark it affects src:wasmedge instead of wasmedge.

Alright, fair enough. Hopefully fixed above?

> > Also, I'm not sure I understand how clang migrated to testing when it
> > introduced an autopkgtest regression in another package. Isn't
> > autopkgtest integration in britney supposed to prevent this kind of
> > thing from happening?
> 
> britney prevents this kind of things currently only for *direct* reverse
> (test) dependencies. In this case we have:
> 
> test/Depends: clang (from src:llvm-defaults) -> (Depends) clang-16
> 
> As I'm pretty sure you meant not clang, but one of the versioned clang
> packages, britney didn't see the breakage. There are multiple ways to
> improve this:
> * britney should look at all transitive dependencies (we lack the resources
> and also not environmentally friendly)
> * britney could be taught to translate (automatically or via configuration)
> "-defaults" packages to their real packages. This would be good for multiple
> ecosystems, patches welcome.
> * Individual packages that are sensitive could use the
> `hint-testsuite-triggers` trick from the autopkgtest spec [1] and add the
> current real packages. That's a PITA to maintain though, and adding versions
> that you don't really test is wrong.

Hrm, that's useful context and in hindsight makes a lot of sense. Thanks
so much for spending the time to explain this to me!

In the meantime, I'll mark the embed-cxx test as flaky in the next
WasmEdge upload until the clang-16 bug gets fixed.

Best,
Faidon