NOTE: Do not plug the Leap into a USB 3.0 port, for some unknown reason, it will be massively slower, than on a standard USB 2.0 port

• Install repository based SDK and drivers:

    $ yaourt -S leap-motion-sdk leap-motion-driver
  

• Start and enable driver on start-up:

    $ sudo systemctl start leapd.service
    $ sudo systemctl enable leapd.service
  

• Download the SDK from here

• Install swig:

    $ sudo pacman -Syu swig
  

• Navigate to the folder where the SDK was downloaded to:

    $ cd <path-to-downloads>/LeapDeveloperKit_<version-number>_linux/LeapSDK/include
  

• Wrap the source file with swig

    $ swig -c++ - python -o LeapPython.cpp -interface LeapPython Leap.i
  

  It is very likely, that the generated code has one "slappy" solution, which needs to be fixed, otherwise the compiler will complain about this with the following error:

    LeapPython.cpp:14510:30: error: taking the address of a temporary object of type 'std::string' (aka 'basic_string<char>') [-Waddress-of-temporary]
  
    result = (std::string *) &Leap_Device_serialNumber_get(arg1);
                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    1 error generated.
  

  This can be fixed by changing the line which throws the error to the following two lines:

    std::string serial_number = Leap_Device_serialNumber_get(arg1);
    result = (std::string *) &serial_number;
  

• Compile the generated .cpp code:

    $ g++ -fPIC -I /usr/include/python3.4m/ LeapPython.cpp /usr/lib/Leap/libLeap.so -shared -o LeapPython.so
  

• Migrate the Python module from Python 2 to Python 3:

    $ 2to3 -w Leap.py
  

• Rename originally installed components as backups:

    $ cd /usr/lib/Leap
    $ sudo mv Leap.py _Leap.py
    $ sudo mv LeapPython.so _LeapPython.so
    $ sudo mv libLeap.so
  

• Copy new files at installation:

    $ sudo cp <path-to-downloads>/LeapDeveloperKit_<version-number>_linux/LeapSDK/include/Leap.py .
    $ sudo cp <path-to-downloads>/LeapDeveloperKit_<version-number>_linux/LeapSDK/include/LeapPython.so .
    $ sudo cp <path-to-downloads>/LeapDeveloperKit_<version-number>_linux/LeapSDK/lib/x64/libLeap.so .
  

• Add library path to the environment:

    $ nano ~/.bashrc
    $ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/Leap/
    $ source ~/.bashrc
  

• The following lines should be included into every python file which is using the Leap module:

    from sys import path as sys_path
    sys_path.insert(0, '/usr/lib/Leap')
    import Leap
  

• Enjoy ;)

Sources: support.leapmotion.com and leap and python3 on ubuntu

• Download the SDK from here, at this very moment, the latest version available is: 0.5.0.1-beta

• Navigate to the download folder and install the SDK:

    $ make
    $ sudo make install
  

• Using Oculus SDK 0.4.4: Navigate to ovr_sdk_linux_0.4.4 and type:

    $ sudo rmmod uvcvideo
    $ sudo modprobe uvcvideo quirks=0
    $ sudo ./oculusd
  

• Using Oculus SDK 0.5.0.1-beta: Navigate to ovr_sdk_linux_0.5.0.1 and type:

    $ sudo Service/OVRServer/Bin/Linux/x86_64/ReleaseStatic/ovrd
  

• Run the app you want...

*Sources: oculus c api 0.5 and forum tips on segfault