Re: [PATCH 0/9] Introduce local apt repo to cache upstream debian packages for offline usage

[Jan Kiszka <jan.kiszka@siemens.com>]

On 04.11.18 11:07, Jan Kiszka wrote:> On 02.10.18 14:18, Maxim Yu. Osipov wrote:
>> Hello everybody,
>>
>> This series by Alexander Smirnov,
>>
>> 1) Introduces dedicated local apt (base-apt) repo for upstream Debian packages
>>
>> 2) Caches in base-apt repo upstream Debian packages during image generation.
>>
>> 3) After this step, image can be built offline using only base-apt repo.
>>
>> Usage instructions can be found in the last patch.
>> TODO:
>> Sign the repo with gpg
> 
> There are more, in fact:
> 
> - enable support for cross-build: dependencies of buildchroot-target are
>    not cached which breaks the rebuild - probably related to the strange
>    way of creating the repo via a task. Maybe apt-cacher can help.

Played a bit more with it, and it's not cross-build:

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index ad19f3d..d033cf5 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -143,7 +143,7 @@ do_cache_base_repo() {
     fi
 }
 
-addtask cache_base_repo after do_rootfs
+addtask cache_base_repo after do_rootfs do_install_imager_deps
 
 # Imager are expected to run natively, thus will use the target buildchroot.
 ISAR_CROSS_COMPILE = "0"

I.e., we simply ignored the dependencies of the imager. Cross-building
is fine now as well.

> 
> - move base_apt out of tmp - it belongs to downloads. That will also
>    make it easier to purge tmp completely in order trigger a rebuild.
> 
> - get rid of the control knobs, at least make them opt-out instead of
>    opt-in. I see no reason why the cache can't be created by default and
>    why it can't be used by default if it's there - we do the same with
>    other downloads.

- make sure you can switch between cached and non-cached build on-the-
  fly, without requiring to purge all build results. That's important
  when you want to add packages that are not yet cached, at least as
  long as we allow to control the mode manually.

> 
> I'm also curious if the apt-cacher-ng Henning mentioned can help to make things 
> simpler.
> 
> Thanks,
> Jan
> 

Jan

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