[Pkg-rust-maintainers] Bug#1034939: Bug#1034939: librust-<crate>-<semver>-dev: missing Breaks+Replaces for librust-mio-dev when upgrading from bullseye

[Fabian Grünbichler]

On Fri, Apr 28, 2023 at 07:58:35PM +0200, Fabian Grünbichler wrote:
> 2) if the "fork point" corresponds to the version in the soon-to-be-old
> stable release, and the semver suffix package is still in testing when
> that becomes the stable release (as then the unversioned package in
> (old)stable and the semver suffix package in (new)stable ship the same
> path)
> 
> is 2) actually true for any of the filed bugs at the moment? if not,
> then IMHO we can ignore this until bookworm is out the door, decide on
> and ship the fix in debcargo, and ease out the problematic packages by
> updating them (basically option 5). like Peter noted below, these are
> packages almost certainly only installed on developer machines (or the
> odd programmer's who doesn't use the stock, upstream way of doing rust
> developement) and in 'unclean' build environments, not on regular
> servers or end user machines.

I guess I could have checked that myself before writing -
rust-block-buffer is in bullseye with version 0.9.0-4, and
rust-block-buffer-0.9 is in bookworm with version 0.9.0-1, so yeah, this
affects bullseye->bookworm upgrades, although with all the caveats Peter
and I mentioned, which might still be an argument for not "hotfixing"
this in bookworm now.