[Owncloud] App Requirements

[Tom Needham]

> Hey Tom,
> 
> actually I wrote a proposal about dependencies of apps (mainly apps depending on other apps) to this mailing list on 8th of april, hoping to start a constructive discussion about it...

Hi Florian!,

I remember this now! I think it is also important (and a common use case) that apps need to require specific functions / classes that might need to be installed by a systems administrator. But you're idea of requiring other ownCloud apps is also valid! We could include <app> elements in the <requirements> section like you have demonstrated. 

We can also put in a requirement for the php version, and owncloud version.

Cheers,
Tom

Tom Needham
tom at owncloud.com



On 18 Apr 2012, at 22:25, Florian Hülsmann wrote:

> Hey Tom,
> 
> actually I wrote a proposal about dependencies of apps (mainly apps depending on other apps) to this mailing list on 8th of april, hoping to start a constructive discussion about it...
> 
> I thought about something like this:
> 
> <info>
>  <!-- app info -->
>  <requires id="required_app">
>    <!-- to define specific versions of required_app, optional -->
>    <min>0.2</min> <!-- optional -->
>    <max>0.5</max> <!-- optional -->
>    <version>0.15</version> <!-- a specific version; optional -->
>    <version>0.16</version> <!-- optional -->
>  </requires>
>  <requires id="another_app" />
> 
>  <conflicts id="evil_app">
>    <max>0.3</max> <!-- same version properties as above -->
>  </conflicts>
>  <!-- ... -->
> </info>
> 
> But we could make this even possible for PHP libraries etc.
> 
> Cheers
> 
> Florian
> 
> Am 18.04.2012 23:17, schrieb Tom Needham:
>> Hi All,
>> 
>> Had an idea of how to implement requirements when installing apps. For
>> example, when the gallery is installed, it need to check if gd is
>> installed, rather than just giving an error. So I though about adding a
>> <requirements> section to the apps info.xml. In there we can list
>> <functions> <classes> and <extensions> that we can check exists when
>> enabling the app.
>> 
>> We can also do a check when we do the overall owncloud install to check
>> that the default enabled apps have all their requirements met.
>> 
>> What do you think, is this flexible enough for apps?
>> 
>> Thanks,
>> Tom
>> 
>> Tom Needham
>> tom at owncloud.com <mailto:tom at owncloud.com>
>> 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Owncloud mailing list
>> Owncloud at kde.org
>> https://mail.kde.org/mailman/listinfo/owncloud
> 
> -- 
> Florian Hülsmann
> <fh at cbix.de>
> http://cbix.de

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