On Oct 21, 2011, at 20:19, David Evans wrote:
> On 10/21/11 4:29 PM, Ryan Schmidt wrote:
>> On Oct 20, 2011, at 17:35, David Evans wrote:
>>> On 10/20/11 2:41 PM, Ryan Schmidt wrote:
>>>> On Oct 20, 2011, at 15:15, devans wrote:
>>>>> py26-atspi: add license, remove redundant dependency on python26.
>>>> It wasn't particularly redundant, was it? py26-atspi does itself use 
>>>> python26, so it was appropriate for py26-atspi to list a dependency on 
>>>> python26.
>>>> 
>>> By redundant, I meant that, in particular, py26-gtk declares a
>>> dependency on python26 so it is not necessary to do so again. One could
>>> argue that it isn't even necessary to declare python26 in py26-gtk,
>>> since its dependents
>>> py26-cairo and py26-gobject each declare it.
>> No, I disagree with this reasoning.
>> 
>> py26-gtk, py26-cairo and py26-gobject each directly use python26, therefore 
>> it is proper for each of them to declare a dependency on python26.
>> 
>> Imagine there is a bug or change in python26 that requires all dependents to 
>> be rebuilt, i.e. to have their revisions increased. You want to be easily 
>> able to identify all those ports by grepping the portfiles for ":python26". 
>> You don't want to have to go hunting around the dependency chain; it takes 
>> forever and you always miss some. We've had this time and time again, for 
>> example when gettext or libpng get updated to new major versions. Granted, 
>> this problem is easier to imagine when we're talking about shared libraries 
>> like gettext or libpng, but I wouldn't say it's out of the question for 
>> python.
> 
> I thought we had gotten away from the grepping of ports with commands like
> 
> port echo depends:python26
> 
> (which, by the way, correctly reports py26-atspi as depending on
> python26 even with my change).
> 
> Its fast and seems to give the desired results. 

Ah... I've still been grepping ports, because I seem to have missed the 
introduction of that command. It does seem to work... I guess we should promote 
the heck out of that command then! It seems to be missing from "man port" but 
is in the guide:

http://guide.macports.org/#using.common-tasks.finddepending



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