[R-pkg-team] Bug#1089197: dh-r fails without an apt cache

[Jochen Sprickerhof]

Hi,

I plan to clean the apt cache by default for forky and implement that 
already in the trixie sbuild. This would make a number of R packages 
(via dh-r) and autodep8 FTBFS. For autodep8 there is an open MR linked 
already and for dh-r a fix has been committed in git:

https://salsa.debian.org/r-pkg-team/dh-r/-/commit/144893ae70c2be8ce403b048b095aabaf6865fd8

Please speak up if there is any problem with this plan. You can test the 
new behaviour with:

sbuild --starting-build-commands='apt-get distclean' -d unstable <pkg>

Note that you may still want to apply more fixes as outlined in my mail 
below.

Cheers Jochen

* Jochen Sprickerhof <jspricke at debian.org> [2025-03-02 08:36]:
>Hi Andreas,
>
>* Andreas Tille <tille at debian.org> [2025-03-01 22:39]:
>>if you can provide a patch / MR I'm fine to apply it but currently
>>I have no more free spoons to work on this.
>
>The real question here is how to solve #1089197, i.e. how to encode 
>the package relationships without depending on the apt cache 
>(grep-aptavail or rmadison or anything else that is network related). 
>I have no experience with R packages so I would need some input here. 
>Possible ways I see are:
>
>1. Don't add relations automatically and let the maintainer do it.
>
>2. Always add all package names from the DISCRIPTION file to Suggest:
>   From my understanding this would need some mapping from the R 
>   package name to the Debian package name and maybe a rename of the 
>   Debian packages to simplify the mapping.
>
>3. Add the list of R package in Debian to dh-r and use it to convert 
>   the package name. Note that this needs to be updated whenever a R 
>   packages is added or removed in Debian. (This is what dh-python has, 
>   afair).
>
>Cheers Jochen


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