[Pkg-pascal-devel] Lazarus packaging model

[Paul Gevers]

On 06-05-14 23:00, Abou Al Montacir wrote:
> I found it a pity that Debian drops old packages from archive when
> upgrading sources to a new version, even if other packages depend on
> them.

I think I understand what you mean, but what you write is not true.
Exactly as long as other packages depend on them, they are not dropped.
You can see that now with fpc. There are now both *-2.6.2 and *-2.6.4
packages in sid. fpc is not allowed to migrate to testing until all
dependencies on *-2.6.2 packages are fixed.

> Otherwise, this could be solved easily. The version-named RTL
> packages will stay in the archive until all the dependencies are gone.

This is what happens, but only in sid.

> This means that a package should stay in the archive as long as it
> belongs to the last source version or it is in dependency or build
> dependency of another package in that archive. But I don't want to write
> this to dd list at least before I can figure out what are the impacts.

Well, I think this is properly implemented for fpc via the fpc-abi-##
provides of fpc-rtl package. The "pain" is that we have to start a
transition for every fpc upstream update. That is something that we will
have to do. [On the other hand, but I prefer not to go that route unless
really needed, we can start to version the source packages and then we
can have multiple versions (in Debian usually two are allowed, see e.g.
python and emacs).]

The best strategy for the next fpc upstream version will be to stage it
in experimental. Verify that all unit building dependencies (currently
lazarus and castle-game-engine) build properly against the new version
and fix any issues in experimental (or sid if the fixes are backwards
compatible). If all build failures are fixed, we can then upload to sid
and ask for binNMU's (like I did for lazarus last time).

Paul

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