[MacPorts] #48278: MyPaint-devel: build brush engine library with optional GEGL support, libmypaint subport

[MacPorts]

#48278: MyPaint-devel: build brush engine library with optional GEGL support,
libmypaint subport
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  Reporter:  devans@…       |      Owner:  ryandesign@…
      Type:  enhancement    |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.3
Resolution:                 |   Keywords:
      Port:  MyPaint-devel  |
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Comment (by devans@…):

 The situation upstream has changed recently.  Rather than having an
 OPTIONAL pkg-config dependency on libmypaint-gegl >=1.1, git master since
 about 12/21/2015 now has a MANDATORY dependency on libmypaint >= 1.1. So
 MyPaint-devel (and MyPaint if it would build), theoretically can be used
 now, as is, to satisfy this dependency.  Practically, however, this
 reveals another issue.  See #50275.

 I still think, however, it would be useful to provide the libmypaint-gegl
 brush library as part of this port.  Upstream has recently begun a gegl
 0.3 release series (parallel installable with gegl 0.2 as used by stable
 gimp2) that should make it more convenient to provide the required gegl
 dependency and I have ported it as gegl-0.3.

 Again making a separate subport may not be worth the effort but building
 the additional library would be nice.  Let me know if there's any hope.
 Thanks.

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Ticket URL: <https://trac.macports.org/ticket/48278#comment:7>
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