[Debian GNUstep maintainers] Bug#1028185: src:agenda.app: FTBFS with gnustep-gui/0.30.0

[Yavor Doganov]

Source: agenda.app
Version: 0.46-2
Severity: important
Tags: sid bookworm ftbfs
User: pkg-gnustep-maintainers at lists.alioth.debian.org
Usertags: gnustep-gui0.30-transition gnustep-transition

This package fails to build with gnustep-gui/0.30.0-1 from
experimental:

gcc SoundBackend.m -c \
      -MMD -MP -Wdate-time -D_FORTIFY_SOURCE=2 -DGNUSTEP -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGNUSTEP_BASE_LIBRARY=1 -fno-strict-aliasing -fexceptions -fobjc-exceptions -D_NATIVE_OBJC_EXCEPTIONS -pthread -fPIC -Wall -DGSWARN -DGSDIAGNOSE -Wno-import -g -O2 -g -O2 -ffile-prefix-map=/build/agenda.app-0.46=. -fstack-protector-strong -Wformat -Werror=format-security -fconstant-string-class=NSConstantString -I. -I/usr/local/include/GNUstep -I/usr/include/GNUstep \
       -o obj/SimpleAgenda.obj/SoundBackend.m.o
In file included from SoundBackend.m:1:
/usr/include/GNUstep/AppKit/NSSound.h:58:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'interface'
   58 | @interface NSSound : NSObject <NSCoding, NSCopying>
      | ^~~~~~~~~~
make[5]: *** [/usr/share/GNUstep/Makefiles/rules.make:521: obj/SimpleAgenda.obj/SoundBackend.m.o] Error 1

That's certainly a gnustep-gui bug, trivial to fix.  I'll reassign and
fix accordingly.