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Re: Rebuilding Debian Live gnome image fails

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On 13-Feb-21 06:06, John Crawley wrote:
> 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.

That's exactly the same issue! And indeed that fix works as well. Hmmm, 
I looked through the bug report on packages.debian.org, but didn't think 
to look at that page you mentioned. But, good to have it solved. Thanks!

>> 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.
Might be. I'll keep it in mind. For now, I'm just playing with the 
possibilities, trying to get a squashfs-content as much as possible 
equal to the official Debian release, then make sure I can reproduce it 
in a scripted way. Then the fun start, to make the small changes that I 
need in my personalized version.

-- 

Matthijs

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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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