Installing from source and getting import working in linux

[metulburr]

sudo apt-get install cython

pip install numpy

or you could do

sudo apt-get install python-numpy

then download and setup buildozer (which is kivy's app for installing itself and dependencies and allows easy changes when creating APK files)

git clone https://github.com/kivy/buildozer
cd buildozer
sudo python setup.py install

EDIT:

apparently they now buidozer doesnt download the NDK for you, they want you to download it from
https://www.crystax.net/en/download
and extract it, and change the spec file to its directory path.
# Point to the directory where you extracted the crystax-ndk:
android.ndk_path = <Your install path here. Use ~ for home DIR>

go into your app directory and execute

buildozer init
buildozer android debug deploy run

the first time will take a long time as its installing SDK, NDK, etc. You can add --verbose arg to see what is going on. But every other time after that will be quick.

To test on PC, download for your architecture and OS.
https://kivy.org/#download
and then

sudo python setup.py install
python [SCRIPTNAME]