[MacPorts] #27979: libdc1394 requires libusb, conflicts with libusb-devel, which is more stable.

[MacPorts]

#27979: libdc1394 requires libusb, conflicts with libusb-devel, which is more
stable.
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 Reporter:  njbutko@…          |       Owner:  mail@…          
     Type:  defect             |      Status:  new             
 Priority:  Normal             |   Milestone:                  
Component:  ports              |     Version:  1.9.2           
 Keywords:                     |        Port:  libdc1394       
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Comment(by njbutko@…):

 Replying to [comment:5 jmr@…]:
 > OK, so "problems with the kinect" is a little less vague. But can you
 point out the specific problems?

 Unfortunately, I don't really know the specifics of the problems. I only
 have a vague idea based on talking to the developers of libfreenect a few
 months ago. Their opinion was that libusb was buggy in many of its more
 advanced features. Specifically, they were finding that Apple's IOKit had
 a lot of poorly documented specifications that were difficult to follow
 correctly, and that libusb didn't follow them correctly. So, they patched
 up the parts of libusb that needed patching to get the Kinect to work.
 They submitted the patches, and then were frustrated by libusb's slow
 release schedule. They got the patches pushed into the development branch,
 and the development branch is currently required for anyone working with a
 kinect.

 There is a lot of overlap with people using kinect and libdc1394
 (basically anyone doing computer vision), and it would be nice for them to
 be compatible.

 I'm not sure what a good general policy for this sort of thing is. On the
 one hand, development versions are inherently unstable, because new
 features are being added. However, it sucks when the "stable" version has
 bugs that make it unusable.

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Ticket URL: <https://trac.macports.org/ticket/27979#comment:6>
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