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Re: Rebuilding Debian Live gnome image fails

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On 12/02/2021 17:16, Matthijs wrote:
> On 12-02-2021 03:12, John Crawley wrote:
>> On 09/02/2021 21:40, Matthijs wrote:
>>> Following the Debian Live manual on using a predefined configuration(https://live-team.pages.debian.net/live-manual/html/live-manual/managing-a-configuration.en.html#333):
>>> $ mkdir live-images && cd live-images
>>> $ lb config --config https://salsa.debian.org/live-team/live-images.git::debian
>>> $ cd images/standard
>>> $ sudo lb build
>>>
>>> ...this works and I get an ISO image in that directory.
>>>
>>> But, instead doing this:
>>> $ mkdir live-images && cd live-images
>>> $ lb config --config https://salsa.debian.org/live-team/live-images.git::debian
>>> $ cd images/gnome-desktop
>>> $ sudo lb build
>>> (note the change in the 'cd' command)
>>> ...this does NOT work. The build command starts doing a lot of work, fetching & installing stuff, but then simply stops at this point (copy/paste of ~17 lines of build.log):
>> It's not mentioned in those docs, but I'm pretty sure you'll need to
>> run 'lb config' one more time after moving to the config directory
>> (and possibly editing the files inside), before 'lb build'.
> 
> Interesting. I've tried it, but it doesn't make much of a difference - stops at roughly the same point (well, I get two lines extra, but not much information from that).
> 
> I did manage to trace the root cause back to lines 75/76 in /usr/lib/live/build/chroot_package-lists:
>      Expand_packagelist "$(basename ${LIST})" "config/package-lists" \
>              | grep -v '^#' >> chroot/root/packages.chroot
> 
> It seems that at some point, with the config I'm using, "Expand_packagelist" does not return anything and the script then simply stops. When I replace it with:
>      My_list=$(Expand_packagelist "$(basename ${LIST})" "config/package-lists")
>      echo ${My_list} | grep -v '^#' >> chroot/root/packages.chroot
> 
> ...the build continues and delivers a bootable image. So, my issue seems to be solved with that, or at least I have a workaround. Perhaps I'll dive a bit further, because right now I don't fully understand why the build would stop originally: I would expect, if "expand_packagelist" doesn't return anything, that the following "grep" would hang indefinitely.

This might be the issue that was fixed with a commit on Jan. 12th:
https://salsa.debian.org/live-team/live-build/-/commit/f13273368a16df271e4317d413d9da564f541dea
You could try that fix of appending '|| true' to the line.
  
> Nevertheless, an additional "lb config" doesn't seem to be necessary, as the modified chrot_package-list script works correctly with the original procedure.

You're right in this case, because auto/config holds exactly the same configuration for all the desktop versions. I still think, however, that if you edited auto/config inside the gnome (or whatever) directory, that you'd have to run 'lb config' inside the directory to pick the changes up.

Just in the interest of science, I have a local git clone of live-images, so I copied images/gnome-desktop to a virtual machine and ran the same live-build commands there. The build failed at exactly the same point you recorded.

-- 
John

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Rebuilding Debian Live gnome image fails Matthijs <debian-user-001@vanaalten.net> - 2021-02-09 14:20 +0100
  Re: Rebuilding Debian Live gnome image fails John Crawley <john@bunsenlabs.org> - 2021-02-12 03:30 +0100
    Re: Rebuilding Debian Live gnome image fails Matthijs <debian-user-001@vanaalten.net> - 2021-02-12 09:20 +0100
      Re: Rebuilding Debian Live gnome image fails John Crawley <john@bunsenlabs.org> - 2021-02-13 06:10 +0100
        Re: Rebuilding Debian Live gnome image fails debian-user-001@vanaalten.net - 2021-02-13 20:10 +0100

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