Problems compiling code which imports dulwich module

Hello!
I’ve got a problem with Nuitka while trying to compile Python code which uses dulwich - Python implementation of Git.
nuitka --follow-imports --standalone --output-dir="C:\Users\user\build" C:\Users\user\build\nuitka_test.py

Here is the minimal piece of code which allows to reproduce the problem (there are actually 2 of them):

from dulwich import porcelain

def main():
    pass

if __name__ == "__main__":
    main()

The first warning is the six.py import problem (quite similar to issue #56):

Nuitka:WARNING:Unresolved '__import__' call at 'C:\Program Files\Python36\lib\site-packages\urllib3\packages\six.py:82' may require use of '--include-plugin-directory' or '--include-plugin-files'.

The consequence of this warning is the error arising when I try to execute some network-related code from the compiled executable (clone git repo, for example):

HTTPSConnectionPool(host='gitlab.company.com', port=443): Max retries exceeded with url: /project/repository.git/info/refs?service=git-upload-pack (Caused by SSLError(FileNotFoundError(2, 'No such file or directory'),))

The second problem is the exception:

IndexError: list index out of range:
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\SingleExe.scons", line 477:
    env = createEnvironment(compiler_tools=compiler_tools)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\SingleExe.scons", line 462:
    **args
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Environment.py", line 982:
    apply_tools(self, tools, toolpath)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Environment.py", line 107:
    env.Tool(tool)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Environment.py", line 1789:
    tool(self)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\__init__.py", line 299:
    self.generate(env, *args, **kw)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\default.py", line 40:
    for t in SCons.Tool.tool_list(env['PLATFORM'], env):
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\__init__.py", line 1271:
    c_compiler = FindTool(c_compilers, env) or c_compilers[0]
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\__init__.py", line 1172:
    if t.exists(env):
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\msvc.py", line 292:
    return msvc_exists(env)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\MSCommon\vc.py", line 759:
    vcs = cached_get_installed_vcs(env)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\MSCommon\vc.py", line 524:
    ret = get_installed_vcs(env)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\MSCommon\vc.py", line 535:
    VC_DIR = find_vc_pdir(ver)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\MSCommon\vc.py", line 344:
    comps = find_vc_pdir_vswhere(msvc_version)
  File "C:\Program Files\Python36\lib\site-packages\nuitka\build\inline_copy\lib\scons-3.0.4\SCons\Tool\MSCommon\vc.py", line 306:
    vc_pdir = os.path.join(vsdir[0], 'VC')

If I use just import dulwich in my code, only the second problem persists (but I didn’t find out which consequences it brings)

This behaviour tested on Python 3.6.1 in Windows 10 and Debian 9.4.
Nuitka (0.6.1 … 0.6.3) and Dulwich (0.19.8) were installed via pip.

Maybe this issue would also be interesting for @jelmer who is an initial dulwich developer.

[kayhayen]

I could’t install Python2 version due to missing C compiler MSVC 9 from PyPI, but I don’t think it matters.

[kayhayen]

Tried this on Windows just now, works fine with current development version of Nuitka and probably stable version too, tried it with Python3.9 and latest dulwich in standalone mode.