Python version

[amelieled]

Hi!
The Python version isn't correct?

Traceback (most recent call last):
  File "./build", line 89, in <module>
    proj.main()
  File "./ext/kninja/__init__.py", line 300, in main
    os.execlp('ninja', 'ninja', '-f', self.builddir('generated.ninja'), *remaining)
  File "/usr/lib/python3.6/os.py", line 542, in execlp
    execvp(file, args)
  File "/usr/lib/python3.6/os.py", line 559, in execvp
    _execvpe(file, args)
  File "/usr/lib/python3.6/os.py", line 604, in _execvpe
    raise last_exc.with_traceback(tb)
  File "/usr/lib/python3.6/os.py", line 594, in _execvpe
    exec_func(fullname, *argrest)
FileNotFoundError: [Errno 2] No such file or directory