KivyでSegmentation faultが起こる時の対処

Raspberry PiのUIとしてPythonで書けるKivyを選んだが、OpenGL周りで問題が起こったので解決法を記載しておく。

[INFO   ] [Logger      ] Record log in /home/pi/.kivy/logs/kivy_18-10-22_12.txt
[INFO   ] [Kivy        ] v1.11.0.dev0, git-916b77b, 20181022
[INFO   ] [Python      ] v3.5.3 (default, Sep 27 2018, 17:25:39) 
[GCC 6.3.0 20170516]
[INFO   ] [Factory     ] 184 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [Window      ] Provider: egl_rpi
[INFO   ] [GL          ] Using the "OpenGL ES 2" graphics system
[INFO   ] [GL          ] Backend used <sdl2>
Segmentation fault

環境変数に以下を追加

export KIVY_GL_BACKEND=gl

参照
https://github.com/kivy/kivy/issues/6007