[MacPorts] #55072: py27-matplotlib doesn't build on macOS 10.13 (High Sierra)

[MacPorts]

#55072: py27-matplotlib doesn't build on macOS 10.13 (High Sierra)
--------------------------+-----------------------------
 Reporter:  GeneralDuke9  |      Owner:
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.4.2
 Keywords:                |       Port:  py27-matplotlib
--------------------------+-----------------------------
 Tried to update py27-matplotlib from 2.1.0_1 to 2.1.0_2, failed to build.
 Please find the debug log attached. Important part:

 {{{
 :info:build In file included from
 /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:128:
 :info:build
 /System/Library/Frameworks/Foundation.framework/Headers/NSUUID.h:26:49:
 error: nullability specifier '_Nullable' cannot be applied to non-pointer
 type 'uuid_t' (aka 'unsigned char [16]')
 :info:build - (instancetype)initWithUUIDBytes:(const uuid_t
 _Nullable)bytes;
 :info:build                                                 ^
 :info:build
 /System/Library/Frameworks/Foundation.framework/Headers/NSUUID.h:29:30:
 error: nullability specifier '_Nonnull' cannot be applied to non-pointer
 type 'uuid_t' (aka 'unsigned char [16]')
 :info:build - (void)getUUIDBytes:(uuid_t _Nonnull)uuid;
 :info:build                              ^
 }}}

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Ticket URL: <https://trac.macports.org/ticket/55072>
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Ports system for macOS