[swift-corelibs-dev] Rules on adding dependencies

[Philippe Hausler]

There are a few dependencies that is not yet integrated (but will be hopefully shortly) that may not immediately be in that list; libxml2 and libdispatch. Respectively most notably used for NSXML and NSOperation


> On Dec 4, 2015, at 1:09 PM, Tony Parker <anthony.parker at apple.com> wrote:
> 
>> 
>> On Dec 4, 2015, at 1:01 PM, Tom Leavy <tom at wickr.com <mailto:tom at wickr.com>> wrote:
>> 
>> Thanks!
>> 
>> Is there a list of current dependencies someplace? I understand you use a specific version of ICU as part of CoreFoundation.
>> 
> 
> The best source of this info is going to be the build.py file and Xcode project.
> 
> You are correct that on Apple platforms we use a specific version of ICU (which is itself open source, on opensource.apple.com <http://opensource.apple.com/>). For now, on Linux, we try to use the installed one. There are certainly some areas where we require the functionality provided by the Apple ICU but we have just omitted those from the build on Linux for the time being (look for __HAS_APPLE_ICU__ in CF). Eventually we’ll have to figure out a unified story for this.
> 
> - Tony
> 
>> Thomas Leavy | Wickr Inc.
>> VP Mobile Applications, Architecture | Newark, NJ
>> 
>> 
>>> On Dec 4, 2015, at 3:52 PM, anthony.parker at apple.com <mailto:anthony.parker at apple.com> wrote:
>>> 
>>> Good idea, I filed a bug for that here.
>>> 
>>> https://bugs.swift.org/browse/SR-59 <https://bugs.swift.org/browse/SR-59>
>>> 
>>> - Tony
>>> 
>>>> On Dec 4, 2015, at 12:49 PM, Tom Leavy <tom at wickr.com <mailto:tom at wickr.com>> wrote:
>>>> 
>>>> Hey Tony,
>>>> 
>>>> That sounds like a good objective overall, thanks for clarifying. I think you guys should write that someplace in the documentation on github (if it hasn’t been already)
>>>> 
>>>> Thomas Leavy | Wickr Inc.
>>>> VP Mobile Applications, Architecture | Newark, NJ
>>>> 
>>>> 
>>>>> On Dec 4, 2015, at 2:39 PM, anthony.parker at apple.com <mailto:anthony.parker at apple.com> wrote:
>>>>> 
>>>>> Hi Tom,
>>>>> 
>>>>> I believe it’s important for us to keep our dependencies to an absolute minimum for the core libraries, since they will be distributed very widely. I would prefer to have our own implementation of the JSON parser in Foundation rather than use one from another project.
>>>>> 
>>>>> The one from Darwin is about 2k lines of Objective-C (actually, mostly C).
>>>>> 
>>>>> - Tony
>>>>> 
>>>>>> On Dec 4, 2015, at 11:21 AM, Tom Leavy <tom at wickr.com <mailto:tom at wickr.com>> wrote:
>>>>>> 
>>>>>> I was wondering what the official position on introducing dependencies currently is. I would love to contribute an implementation of NSJSONSerialization. I already have written a wrapper that uses yajl to take a CFDictionaryRef or CFArrayRef and encodes them into CFDataRef or CFStringRef JSON values.. Is it acceptable to use yajl and introduce a dependency, or is it a goal of the foundation project to supply its own implementation of a JSON parser?
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