[Pkg-rust-maintainers] Bug#1069687: librust-bitflags-1-dev: fails to co-install

[Matthias Geiger]

On Mon, 22 Apr 2024 21:01:22 +0200 Helmut Grohne <helmut at subdivi.de> wrote:
 > Package: librust-bitflags-1-dev
 > Version: 1.3.2-5+b1
 > Severity: serious
 > Justification: causes an installation failure
 >
 > Hi,
 >
 > Attempting to install librust-bitflags-1-dev for multiple architectures
 > fails, because apt and dpkg disagree about how breaks and provides work.
 > apt thinks that self-breaks can be ignored, but dpkg thinks that since
 > librust-bitflags-1-dev breaks+provides librust-bitflags-1.3.2-dev it
 > cannot be coinstalled and gives up. You cannot combine such
 > breaks+provides with m-a:same. The simplest workaround here is dropping
 > m-a:same as it cannot be exercised anyway.
 >
 > Helmut


This is the same situation as in #1040477. This is an issue wrt how we 
generate the semvers. I image rust-proc-macro-crate-1 would pose the 
same problem. Quoting you from 1040477:

> A very simple workaround from my pov would be temporarily removing
> Multi-Arch: same. Of course that would make the package unavailable to
> cross compilation, but on the flip side, it already is. After dropping
> Multi-Arch: same, dose would no longer consider solutions involving
> coinstallations of it and archive testing could continue.
>
> Failing that, the only way I see is blacklisting the package in crossqa,
> but then I'd probably forget about it and it would also be surprising in
> the diagnostics as crossqa would always tell that this package does not
> exist. I prefer having you work around the issue. A simple upload
> dropping M-A:same removes the worst of pain and gives us time to work on
> a generic solution. Do you agree?

Is the only workaround dropping Ma:same here ?

Unfortunately we need the semvers (but try to keep them to a minimum).

CC'd Fabian since he is a bit more knowledgable than me here.

best,


-- 
Matthias Geiger <werdahias>
Debian Maintainer
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