Re: [PATCH v4 0/3] One-shot configuration packages

[Claudius Heine <claudius.heine.ext@siemens.com>]

Hi Baurzhan,

On 2018-05-29 10:00, Baurzhan Ismagulov wrote:
> Hello Claudius,
> 
> this is a useful feature that is also user-visible. Would you like to provide a
> patch to doc/user_manual.md?

I will do that and send a v5. But I answer your questions here as well. 
For me its easier to explain something in a dialog that just writing 
docs to someone unknown. :)

> I think we should provide a recommendation for the
> user how to do customizations. I'd be especially interested in your vision
> where to provide what, e.g.: One or many customization packages? 

Currently I cannot think of anything else that could be done with those 
one-shot packages apart from localepurge. Is generally only useful if 
someone needs a tool to customize the root file system that shouldn't be 
part of the image later. Normal customization packages that just change 
or add some configuration files should not be one-shot packages, they 
don't require special tools and therefor its not use purging them to 
remove their dependencies.

I don't even know if it makes really sense to allow multiple packages as 
one-shot packages, but I did it because it might be useful in some 
strange corner cases for someone and wasn't a big effort to do.

> If many, how
> to split customizations between packages?

All the customization, apart from locale configuration should be in 
normal packages, however the user choose to do this. locale 
configuration should be done with overwriting isar-cfg-localepurge 
package or its files.

Maybe the name of that package is choosen poorly. I don't know.

> Or just describe the mechanism and leave the splitting decision to the user?

Yes. That would be useful. The user might want to mix and match 
different configuration fragments contained in multiple configuration 
packages.

> In the latter case, would that mean
> that in Isar, we'll by default provide only one package for all customizations?

I would think so. Maybe move the customization to a isar-cfg-example 
package?

Claudius

> 
> With kind regards,
> Baurzhan.
> 
> 
> On Mon, May 28, 2018 at 12:56:40PM +0200, claudius.heine.ext@siemens.com wrote:
>> From: Claudius Heine <ch@denx.de>
>>
>> Hi,
>>
>> I implemented Hennings suggestion to purge the one-shot packages in the
>> reverse order of the installation.
>>
>> Claudius
>>
>> Changes from v3:
>>   - Purge one-shot packages in reverse order
>>
>> Changes from v2:
>>   - Install one-shot package with a loop
>>   - Rename '-y' apt parameter to '--yes'
>>   - Move isar-cfg-localepurge files from /usr/local/etc to /usr/lib/
>>
>> Changes from v1:
>>   - rebased to current next
>>   - removed locale.nopurge setup in isar-bootstrap
>>
>> Claudius Heine (3):
>>    isar-bootstrap|configscript: implement one shot config option
>>    meta/isar-cfg-localepurge: added locale purge recipe
>>    meta-isar/isar-image-base: switch use isar-cfg-localepurge
>>
>>   .../images/files/debian-configscript.sh       |  9 ------
>>   .../images/files/raspbian-configscript.sh     |  8 -----
>>   .../recipes-core/images/isar-image-base.bb    |  6 ++--
>>   meta/classes/isar-bootstrap-helper.bbclass    | 32 ++++++++++++++++---
>>   .../isar-bootstrap/files/locale.nopurge       | 10 ------
>>   .../isar-bootstrap/isar-bootstrap.bb          |  4 +--
>>   .../isar-cfg-localepurge/files/locale.debconf | 12 +++++++
>>   .../isar-cfg-localepurge/files/locale.gen     |  1 +
>>   .../isar-cfg-localepurge/files/postinst       | 30 +++++++++++++++++
>>   .../isar-cfg-localepurge.bb                   | 19 +++++++++++
>>   10 files changed, 94 insertions(+), 37 deletions(-)
>>   delete mode 100644 meta/recipes-core/isar-bootstrap/files/locale.nopurge
>>   create mode 100644 meta/recipes-support/isar-cfg-localepurge/files/locale.debconf
>>   create mode 100644 meta/recipes-support/isar-cfg-localepurge/files/locale.gen
>>   create mode 100644 meta/recipes-support/isar-cfg-localepurge/files/postinst
>>   create mode 100644 meta/recipes-support/isar-cfg-localepurge/isar-cfg-localepurge.bb
>>
>> -- 
>> 2.17.0
> 

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