Is it possible to create CLIs in Nim and distribute using Nimporter?
When compiling a CLI created in Nim using docopt, I get the following error:

```python
Obtaining file:///Users/BenjaminLee/Desktop/Python/Research/librtd
    ERROR: Command errored out with exit status 1:
     command: /Users/BenjaminLee/.virtualenvs/librtd/bin/python3.7 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/Users/BenjaminLee/Desktop/Python/Research/librtd/setup.py'"'"'; __file__='"'"'/Users/BenjaminLee/Desktop/Python/Research/librtd/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/gw/sk03t1cn3wlgclyc55yst44w0000gn/T/pip-pip-egg-info-3e_yn9f1
         cwd: /Users/BenjaminLee/Desktop/Python/Research/librtd/
    Complete output (19 lines):
    /Users/BenjaminLee/.nimble/pkgs/nimpy-0.1.0/nimpy.nim(972, 32) Warning: Cannot prove that 'arg1k' is initialized. This will become a compile time error in the future. [ProveInit]
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/Users/BenjaminLee/Desktop/Python/Research/librtd/setup.py", line 11, in <module>
        ext_modules=nimporter.build_nim_extensions(),
      File "/Users/BenjaminLee/.virtualenvs/librtd/lib/python3.7/site-packages/nimporter.py", line 1070, in build_nim_extensions
        ext = cls._build_nim_extension(extension, root)
      File "/Users/BenjaminLee/.virtualenvs/librtd/lib/python3.7/site-packages/nimporter.py", line 969, in _build_nim_extension
        path, root, library=path.is_dir()
      File "/Users/BenjaminLee/.virtualenvs/librtd/lib/python3.7/site-packages/nimporter.py", line 465, in compile_nim_extension
        raise NimCompileException(errors[0])
    nimporter.NimCompileException:  commandLineParams() unsupported by dynamic libraries; usage of 'commandLineParams' is an {.error.} defined at /usr/local/Cellar/nim/1.2.0/nim/lib/pure/os.nim(2774, 3)
     |
     |
     -> proc docopt*(doc: string, argv: seq[string] = command_line_params(), help = true,
     |               version: string = "", options_first = false, quit = true
     |              ): Table[string, Value] {.gcsafe.} =

    At /Users/BenjaminLee/.nimble/pkgs/docopt-0.6.8/docopt.nim 608:47
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
```

This appears to be because functions like [`paramCount`](https://nim-lang.org/docs/os.html#paramCount) don't work in dynamic libraries. So, is there way to have pure Nim CLIs distributed in Python? Or do I need to rewrite the CLI in Python?