[LAD] How to develop guis for LV2?

[Jörn Nettingsmeier]

Steve Harris wrote:
> On 5 Nov 2009, at 23:33, David Robillard wrote:
> 
>> On Thu, 2009-11-05 at 22:21 +0100, fons at kokkinizita.net wrote:
>>> On the LV2 website, Lars Luthman's UI extension is described as:
>>>
>>> "This extension is written for revision 2 of the LV2 specification
>>> and is NOT compatible with revisions 3 and later. Do not implement
>>> this extension in new plugins or hosts, and do not expect it to work
>>> in old ones. It is only available here for archaeological purposes."
>> For anyone genuinely interested and not just taking vain pot shots to
>> further some weird personal vendetta or whatever the hell:
>>
>> The thing that changed in r3 is: persistent references to ports must
>> refer to ports by their symbol, and not their index.  Persistent means
>> things on disk that might refer to several versions of a plugin in the
>> future, nothing about the index has actually changed.  Plugin data
>> files, host session files, etc.
> 
> This was a hangover from LADSPA, which had confusing and contradictory  
> claims about what should/shouldn't be used to identify ports.
> 
> I still don't think there's consensus there.

can you elaborate on this?

archive links would be good, too.