Good communication with upstream is good idea
vorlon at debian.org
Sun Jul 20 21:43:13 BST 2008
On Sun, Jul 20, 2008 at 05:32:31PM +0100, Neil Williams wrote:
> I ask because emdebian-tools isn't intended for Ubuntu either. See  -
> emdebian-tools also depends on server resources provided only by Debian
> (in this case, the package repositories containing compatible packages
> which I can use to generate cross-dependencies).
That doesn't seem particularly Debian-specific, though? It's not out of the
question that Ubuntu could have an armel port later, and that's the only
thing I can think of that /should/ cause emdebian-tools to be incompatible
> "emdebian-tools is not intended for Ubuntu but I don't have a way of
> encoding that in the package. emdebian-tools is tightly integrated into
> Debian (and Debian unstable in particular) and is, naturally, a Debian
> native package (it was written to support Embedded Debian after all, not
> UbuntuMobile). It isn't intended to work on Ubuntu because Ubuntu does
> not provide the foreign packages needed for linking when cross building,
> those come exclusively from Debian.
So if an armel port of Ubuntu becomes available, is there anything else that
stops emdebian-tools from working with it?
> Same with apt-cross, it is exclusively designed for Debian, Debian mirrors
> and Debian buildd configurations.
How does apt-cross have anything to do with the Debian buildds, at all?
Surely you're not using this as a build-dependency to force Debian
cross-builds on the Debian buildds, are you?
Nor do I see how apt-cross would be affected by differences between a Debian
vs. an Ubuntu mirror. (Ubuntu main is smaller than Debian main, but is
still self-contained, to be sure.)
> How is emdebian-tools meant to cross-build for ARM on Ubuntu when Ubuntu
> does not provide ARM packages and makes changes to the equivalent Debian
Hrm, what changes are at issue here? The Debian maintainers also make
changes to Debian packages, all the time. In what way do the Ubuntu changes
differ that makes emdebian-tools incompatible with Ubuntu?
> To me it seems highly unlikely that
> cross versions of Debian packages would install over a Ubuntu base,
> especially when those packages are the typical debootstrap selection
> that have a variety of changes in Ubuntu. I don't run Ubuntu, I have no
> inclination to test for Ubuntu and as no-one else has offered, I cannot
> support Ubuntu."
While the current absence of any official Ubuntu armel port seems like a
pretty good reason to omit emdebian-tools from Ubuntu for the moment, the
fact that the Debian package maintainer or upstream author doesn't support
Ubuntu would not generally be a reason for Ubuntu not to include the
package. Debian also has any number of upstreams who don't "support"
Debian, after all.
> How many packages could be in this situation? I don't expect it to be
> many. Some form of filter on the Ubuntu side may be necessary.
Yes, there is a blacklist in Ubuntu to prevent certain packages from being
synced from Debian. Scott Kitterman has already started the process now of
getting emdebian-tools added to that list.
BTW, in your cited blog post, I noticed that you wrote:
> I really don't like Launchpad (I have quite enough web-logins thank you very
> much) or the PTS link that shows Ubuntu bugs that I cannot close from
You can close Launchpad bugs in Ubuntu packages from Debian. The "LP: ######"
syntax lets bugs get autoclosed when your package is synced to Debian, or
when it's merged by an Ubuntu developer.
Steve Langasek Give me a lever long enough and a Free OS
Debian Developer to set it on, and I can move the world.
Ubuntu Developer http://www.debian.org/
slangasek at ubuntu.com vorlon at debian.org
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