Adding new kernel fails with python <3.8 #380
Description
Fails because the unsupported feature is used in install script:
Installing kernel to /Users/pavel.gorgulov/Library/Jupyter/kernels/kotlin_JDK_11_kernel Traceback (most recent call last): File "/opt/anaconda3/lib/python3.7/runpy.py", line 193, in _run_module_as_main "__main__", mod_spec) File "/opt/anaconda3/lib/python3.7/runpy.py", line 85, in _run_code exec(code, run_globals) File "/opt/anaconda3/lib/python3.7/site-packages/kotlin_kernel/__main__.py", line 32, in <module> main(sys.argv) File "/opt/anaconda3/lib/python3.7/site-packages/kotlin_kernel/__main__.py", line 24, in main commands[command](args) File "/opt/anaconda3/lib/python3.7/site-packages/kotlin_kernel/__main__.py", line 5, in <lambda> commands = {'add-kernel': lambda x: add_kernel(x), 'detect-jars-location': File "/opt/anaconda3/lib/python3.7/site-packages/kotlin_kernel/add_kernel.py", line 83, in add_kernel install_base_kernel(kernel_name) File "/opt/anaconda3/lib/python3.7/site-packages/kotlin_kernel/install_user.py", line 32, in install_base_kernel shutil.copytree(src, dst, dirs_exist_ok=True) TypeError: copytree() got an unexpected keyword argument 'dirs_exist_ok' Either state in the documentation that only python >= 3.8 should be used, or rewrite it to support lower versions.