[bug#33426] [PATCH] gnu: python-kivy-next: Fix build.

[Jovany Leandro G.C]

From 43a2729699ccfae2738fa2cced1106fbb9afbfc6 Mon Sep 17 00:00:00 2001
From: "Jovany Leandro G.C" <address@hidden>
Date: Mon, 19 Nov 2018 00:36:27 -0500
Subject: [PATCH] gnu: python-kivy-next: Fix build.

* gnu/packages/patches/python-kivy-next-fix-sdl2-mixer-2.0.2-support.patch: New 
file.
---
 ...vy-next-fix-sdl2-mixer-2.0.2-support.patch | 109 ++++++++++++++++++
 gnu/packages/python.scm                       |   3 +-
 2 files changed, 111 insertions(+), 1 deletion(-)
 create mode 100644 
gnu/packages/patches/python-kivy-next-fix-sdl2-mixer-2.0.2-support.patch

diff --git 
a/gnu/packages/patches/python-kivy-next-fix-sdl2-mixer-2.0.2-support.patch 
b/gnu/packages/patches/python-kivy-next-fix-sdl2-mixer-2.0.2-support.patch
new file mode 100644
index 000000000..fdc5dd701
--- /dev/null
+++ b/gnu/packages/patches/python-kivy-next-fix-sdl2-mixer-2.0.2-support.patch
@@ -0,0 +1,109 @@
+From 3b85f3e1c292b3f6c3f226490f52a2ab78251730 Mon Sep 17 00:00:00 2001
+From: Terje Skjaeveland <address@hidden>
+Date: Sun, 29 Oct 2017 12:35:46 +0100
+Subject: [PATCH] audio_sdl2: Update for mixer v2.0.2 support
+
+Flags MIX_INIT_MODPLUG was removed, and MIX_INIT_FLUIDSYNTH was
+renamed to MIX_INIT_MID.
+---
+ kivy/core/audio/audio_sdl2.pyx | 45 +++++++++++++++++++++++-----------
+ kivy/lib/sdl2.pxi              |  4 +--
+ 2 files changed, 33 insertions(+), 16 deletions(-)
+
+diff --git a/kivy/core/audio/audio_sdl2.pyx b/kivy/core/audio/audio_sdl2.pyx
+index 2ab569fe60..c6f26be5c8 100644
+--- a/kivy/core/audio/audio_sdl2.pyx
++++ b/kivy/core/audio/audio_sdl2.pyx
+@@ -15,9 +15,23 @@ Depending the compilation of SDL2 mixer and/or installed 
libraries:
+ * ogg since 1.9.1 (mixer needs libvorbis/libogg)
+ * flac since 1.9.1 (mixer needs libflac)
+ * mp3 since 1.9.1 (mixer needs libsmpeg/libmad; only use mad for GPL apps)
++  * Since 1.10.1 + mixer 2.0.2, mpg123 can also be used
+ * sequenced formats since 1.9.1 (midi, mod, s3m, etc. Mixer needs
+   libmodplug or libmikmod)
+ 
++.. Note::
++
++    Sequenced format support changed with mixer v2.0.2. If mixer is
++    linked with one of libmodplug or libmikmod, format support for
++    both libraries is assumed. This will work perfectly with formats
++    upported by both libraries, but if you were to try to load an
++    obscure format (like `apun` file with mikmod only), it will fail.
++
++    * Kivy <= 1.10.0: will fail to build with mixer >= 2.0.2
++      will report correct format support with < 2.0.2
++    * Kivy >= 1.10.1: will build with old and new mixer, and
++      will "guesstimate" sequenced format support
++
+ .. Warning::
+ 
+     Sequenced formats use the SDL2 Mixer music channel, you can only play
+@@ -57,8 +71,13 @@ cdef mix_init():
+         mix_is_init = -1
+         return 0
+ 
++    # In mixer 2.0.2, MIX_INIT_MODPLUG is now implied by MIX_INIT_MOD,
++    # and MIX_INIT_FLUIDSYNTH was renamed to MIX_INIT_MID. In previous
++    # versions, we requested both _MODPLUG and _MOD + _FLUIDSYNTH.
++    # 0x20 used to be MIX_INIT_FLUIDSYNTH, now MIX_INIT_MID
++    # 0x4  used to be MIX_INIT_MODPLUG before 2.0.2
+     want_flags = MIX_INIT_FLAC | MIX_INIT_OGG | MIX_INIT_MP3
+-    want_flags |= MIX_INIT_MOD | MIX_INIT_MODPLUG | MIX_INIT_FLUIDSYNTH
++    want_flags |= MIX_INIT_MOD | 0x20 | 0x4
+ 
+     mix_flags = Mix_Init(want_flags)
+ 
+@@ -244,25 +263,23 @@ class MusicSDL2(Sound):
+     @staticmethod
+     def extensions():
+         mix_init()
++        # FIXME: this should probably evolve to use the new has_music()
++        #        interface to determine format support
+ 
+         # Assume native midi support (defaults to enabled), but may use
+         # modplug, fluidsynth or timidity in reality. It may also be
+         # disabled completely, in which case loading it will fail
+         extensions = set(['mid', 'midi'])
+ 
+-        # libmodplug, may be incomplete
+-        if mix_flags & MIX_INIT_MODPLUG:
+-            extensions.update(['669', 'abc', 'amf', 'ams', 'dbm', 'dmf',
+-                               'dsm', 'far', 'it', 'j2b', 'mdl', 'med',
+-                               'mod', 'mt2', 'mtm', 'okt', 'pat', 'psm',
+-                               'ptm', 's3m', 'stm', 'ult', 'umx', 'xm'])
+-
+-        # libmikmod, may be incomplete
+-        if mix_flags & MIX_INIT_MOD:
+-            extensions.update(['669', 'amf', 'apun', 'dsm', 'far', 'gdm',
+-                               'gt2', 'it',  'med', 'mod', 'mtm', 'okt',
+-                               's3m', 'stm', 'stx', 'ult', 'umx', 'uni',
+-                               'xm'])
++        # libmodplug and libmikmod, may be incomplete.
++        # 0x4 is for mixer < 2.0.2, MIX_INIT_MODPLUG
++        if mix_flags & (MIX_INIT_MOD | 0x4):
++            extensions.update(['669', 'abc', 'amf', 'ams', 'apun', 'dbm',
++                               'dmf', 'dsm', 'far', 'gdm', 'it',   'j2b',
++                               'mdl', 'med', 'mod', 'mt2', 'mtm',  'okt',
++                               'pat', 'psm', 'ptm', 's3m', 'stm',  'stx',
++                               'ult', 'umx', 'uni', 'xm'])
++
+         return list(extensions)
+ 
+     def __init__(self, **kwargs):
+diff --git a/kivy/lib/sdl2.pxi b/kivy/lib/sdl2.pxi
+index 07d055c903..ad62ce8023 100644
+--- a/kivy/lib/sdl2.pxi
++++ b/kivy/lib/sdl2.pxi
+@@ -881,10 +881,10 @@ cdef extern from "SDL_mixer.h":
+     ctypedef enum MIX_InitFlags:
+         MIX_INIT_FLAC        = 0x00000001
+         MIX_INIT_MOD         = 0x00000002
+-        MIX_INIT_MODPLUG     = 0x00000004
++        MIX_INIT_MODPLUG     = 0x00000004 # Removed in mixer 2.0.2
+         MIX_INIT_MP3         = 0x00000008
+         MIX_INIT_OGG         = 0x00000010
+-        MIX_INIT_FLUIDSYNTH  = 0x00000020
++        MIX_INIT_MID         = 0x00000020 # Previously _FLUIDSYNTH
+ 
+     cdef int MIX_MAX_VOLUME
+ 
diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index b6b0ad75a..b32c9049d 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -9998,7 +9998,8 @@ hardware-accelerated multitouch applications.")
          (file-name (string-append name "-" version "-checkout"))
          (sha256
           (base32
-           "0jk92b4a8l7blkvkgkjihk171s0dfnq582cckff5srwc8kal5m0p")))))))
+           "0jk92b4a8l7blkvkgkjihk171s0dfnq582cckff5srwc8kal5m0p"))
+         (patches (search-patches 
"python-kivy-next-fix-sdl2-mixer-2.0.2-support.patch")))))))
 
 (define-public python2-kivy-next
   (package-with-python2 python-kivy-next))
-- 
2.19.0