numpyのインストールエラー

前提・実現したいこと

環境：ubuntu18.04
jetson nano

jetson nanoで点群をpythonで処理するためにopenpylivoxという非公式の
ライブラリをインストールするために以下のコードを実行していました。

このエラーの解決方法をご教授いただければと思います。宜しくお願い致します。

発生している問題・エラーメッセージ

pip install git+https://github.com/ryan-brazeal-ufl/openpylivox.git

すると以下のようなnumpyに関するエラーが出ました

 
  Failed building wheel for numpy
  Running setup.py clean for numpy
  Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-chp90lsa/numpy/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" clean --all:
  Running from numpy source directory.
  
  `setup.py clean` is not supported, use one of the following instead:
  
    - `git clean -xdf` (cleans all files)
    - `git clean -Xdf` (cleans all versioned files, doesn't touch
                        files that aren't checked into the git repo)
  
  Add `--force` to your command to use it anyway if you must (unsupported).
  
  
  ----------------------------------------
  Failed cleaning build dir for numpy
  Running setup.py bdist_wheel for wrapt ... done
  Stored in directory: /home/mana/.cache/pip/wheels/b1/c2/ed/d62208260edbd3fa7156545c00ef966f45f2063d0a84f8208a
Successfully built crcmod laspy wrapt
Failed to build numpy
Installing collected packages: crcmod, wrapt, deprecated, numpy, laspy, tqdm, openpylivox-pkg
  Running setup.py install for numpy ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-chp90lsa/numpy/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-ct103ojo-record/install-record.txt --single-version-externally-managed --compile --user --prefix=:
    Running from numpy source directory.
    
    Note: if you need reliable uninstall behavior, then install
    with pip instead of using `setup.py install`:
    
      - `pip install .`       (from a git repo or downloaded source
                               release)
      - `pip install numpy`   (last NumPy release on PyPi)
    
    
    Cythonizing sources
    numpy/random/_bounded_integers.pxd.in has not changed
    Processing numpy/random/_common.pyx
    Traceback (most recent call last):
      File "/tmp/pip-build-chp90lsa/numpy/tools/cythonize.py", line 59, in process_pyx
        import Cython
    ModuleNotFoundError: No module named 'Cython'
    
    The above exception was the direct cause of the following exception:
    
    Traceback (most recent call last):
      File "/tmp/pip-build-chp90lsa/numpy/tools/cythonize.py", line 240, in <module>
        main()
      File "/tmp/pip-build-chp90lsa/numpy/tools/cythonize.py", line 236, in main
        find_process_files(root_dir)
      File "/tmp/pip-build-chp90lsa/numpy/tools/cythonize.py", line 227, in find_process_files
        process(root_dir, fromfile, tofile, function, hash_db)
      File "/tmp/pip-build-chp90lsa/numpy/tools/cythonize.py", line 193, in process
        processor_function(fromfile, tofile)
      File "/tmp/pip-build-chp90lsa/numpy/tools/cythonize.py", line 66, in process_pyx
        raise OSError(msg) from e
    OSError: Cython needs to be installed in Python as a module
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-chp90lsa/numpy/setup.py", line 448, in <module>
        setup_package()
      File "/tmp/pip-build-chp90lsa/numpy/setup.py", line 430, in setup_package
        generate_cython()
      File "/tmp/pip-build-chp90lsa/numpy/setup.py", line 236, in generate_cython
        raise RuntimeError("Running cythonize failed!")
    RuntimeError: Running cythonize failed!
    
    ----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-chp90lsa/numpy/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-ct103ojo-record/install-record.txt --single-version-externally-managed --compile --user --prefix=" failed with error code 1 in /tmp/pip-build-chp90lsa/numpy/