[Debian-med-packaging] Bug#908834: Bug#908834: please build zstd udeb so that btrfs-progs can use zstd in Debian Installer

[Dimitri John Ledkov]

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On Tue, 9 Oct 2018 at 12:23, Alex Mestiashvili <amestia at rsh2.donotuse.de> wrote:
>
> On 09/14/2018 08:04 PM, Nicholas D Steeves wrote:
> > Package: zstd
> > Version: 1.3.5+dfsg-1
> > Severity: wishlist
> >
> > Dear Debian Med Packaging Team,
> >
> > Would you please build a zstd udeb so that btrfs-progs can use zstd in
> > Debian Installer and Rescue System?  It uses zstd for transparent
> > filesystem compression.
> >
> > eg: `chattr +c`, or `btrfs filesystem defrag -c`, or via a mount
> > option `compress=zstd`.  I believe the first and last of these use the
> > kernel's libzstd, and that the udeb is primarily required for
> > `btrfs-repair` to handle zstd extents in the Rescue System.  Also, please continue to CC Dmitri Ledkov, Debian's btrfs-progs maintainer.
> >
> > Cheers,
> > Nicholas
> >
> > _______________________________________________
> > Debian-med-packaging mailing list
> > Debian-med-packaging at alioth-lists.debian.net
> > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/debian-med-packaging
> >
>
>
> As far as I see it's enough to add udeb stanzas in d/control in order to
> build the udebs[0].
> Is there anything else to consider before uploading lisbzstd with udebs?
>

No, that's not at all enough. It ends up creating two empty packages,
without any files in them.

One needs to actually install a library into the library udeb and
tools into tools-udeb.
Note for fbtrfs only library-udeb is needed.

Maybe https://patches.ubuntu.com/libz/libzstd/libzstd_1.3.5+dfsg-1ubuntu1.patch
is of help

Also do get it reviewed, as last time unwritten rules w.r.t. udebs got
enforced and above patch was rejected on ground of not strict enough
alternative shlibs deps generated.

Please figure out what's missing before uploading to avoid a reject again.


> Thank you,
> Alex
>
> [0]
> https://salsa.debian.org/med-team/libzstd/commit/3cb048aab364b5fca41d0c2feb7cdf943786cee4
>


-- 
Regards,

Dimitri.