你好！

       我购买的图书是 Python+Kivy （APP）开发，安装图书介绍使用笔者配置好的虚拟机，在Win7系统上无法打包：

kivydev@kivydev-VirtualBox:~/test/py3apk$ p4a clean_dists

[INFO]:    Reading .p4a configuration

[INFO]:    Recipe python3crystax: version "3.6" requested

kivydev@kivydev-VirtualBox:~/test/py3apk$ p4a apk

[INFO]:    Reading .p4a configuration

[INFO]:    Recipe python3crystax: version "3.6" requested

[INFO]:    Will compile for the following archs: armeabi-v7a

[INFO]:    Getting Android API version from user argument

[INFO]:    Available Android APIs are (19, 23, 27)

[INFO]:    Requested API target 27 is available, continuing.

[INFO]:    Getting NDK dir from from user argument

[INFO]:    Got NDK version from $ANDROIDNDKVER

[INFO]:    Got Android NDK version from the NDK dir: it is 10.3.2

[INFO]:    Using Crystax NDK 10.3.2

[INFO]:    Found virtualenv at /usr/bin/virtualenv

[INFO]:    Found the following toolchain versions: ['4.9', '5', 'clang3.6', 'clang3.7']

[INFO]:    Picking the latest gcc toolchain, here 5

[INFO]:    No existing dists meet the given requirements!

[INFO]:    No dist exists that meets your requirements, so one will be built.

。。。。

                 from /home/kivydev/.local/share/python-for-android/build/bootstrap_builds/sdl2_gradle-python3crystax/jni/SDL/src/SDL_error.c:25:

/home/kivydev/andr/crystax-ndk-10.3.2/sources/crystax/include/sys/cdefs.h:34:38: fatal error: crystax/google/sys/cdefs.h: No such file or directory

compilation terminated.

/home/kivydev/andr/crystax-ndk-10.3.2/build/core/build-binary.mk:496: recipe for target '/home/kivydev/.local/share/python-for-android/build/bootstrap_builds/sdl2_gradle-python3crystax/obj/local/armeabi-v7a/objs/SDL2/src/SDL_error.o' failed

make: *** [/home/kivydev/.local/share/python-for-android/build/bootstrap_builds/sdl2_gradle-python3crystax/obj/local/armeabi-v7a/objs/SDL2/src/SDL_error.o] Error 1

另外请问，笔者这个虚拟机的用户密码是多少？（没有密码很多功能无法拓展）