$ pip install pythonnetCollecting pythonnet  Using cached https://files.pythonhosted.org/packages/89/3b/a22cd45b591d6cf490ee8b24d52b9db1f30b4b478b64a9b231c53474731e/pythonnet-2.3.0.tar.gzBuilding wheels for collected packages: pythonnet  Running setup.py bdist_wheel for pythonnet ... error  Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-mm2agm3f/pythonnet/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/pip-wheel-wz7tt5qr --python-tag cp36:  running bdist_wheel  running build  running build_ext  Checking for updates from https://www.nuget.org/api/v2/.  Currently running NuGet.exe 3.5.0.  Updating NuGet.exe to 4.7.1.  Update successful.  MSBuild auto-detection: using msbuild version '15.0' from '/usr/lib/mono/msbuild/15.0/bin'.  Restoring NuGet package NUnit.ConsoleRunner.3.6.0.  Restoring NuGet package UnmanagedExports.1.2.7.  Restoring NuGet package NUnit.3.6.0.  Adding package 'NUnit.ConsoleRunner.3.6.0' to folder '/tmp/pip-install-mm2agm3f/pythonnet/packages'  Adding package 'UnmanagedExports.1.2.7' to folder '/tmp/pip-install-mm2agm3f/pythonnet/packages'  Adding package 'NUnit.3.6.0' to folder '/tmp/pip-install-mm2agm3f/pythonnet/packages'  Added package 'UnmanagedExports.1.2.7' to folder '/tmp/pip-install-mm2agm3f/pythonnet/packages'  Added package 'NUnit.ConsoleRunner.3.6.0' to folder '/tmp/pip-install-mm2agm3f/pythonnet/packages'  Added package 'NUnit.3.6.0' to folder '/tmp/pip-install-mm2agm3f/pythonnet/packages'    NuGet Config files used:      /home/kilometrics/.config/NuGet/NuGet.Config    Feeds used:      /home/kilometrics/.nuget/packages/      https://api.nuget.org/v3/index.json    Installed:      3 package(s) to packages.config projects  clang: warning: /usr/include/python3.6m: 'linker' input unused [-Wunused-command-line-argument]  Traceback (most recent call last):    File "tools/geninterop/geninterop.py", line 292, in <module>      sys.exit(main())    File "tools/geninterop/geninterop.py", line 274, in main      ast = parser.parse(python_h)    File "/usr/local/lib/python3.6/dist-packages/pycparser/c_parser.py", line 152, in parse      debug=debuglevel)    File "/usr/local/lib/python3.6/dist-packages/pycparser/ply/yacc.py", line 331, in parse      return self.parseopt_notrack(input, lexer, debug, tracking, tokenfunc)    File "/usr/local/lib/python3.6/dist-packages/pycparser/ply/yacc.py", line 1199, in parseopt_notrack      tok = call_errorfunc(self.errorfunc, errtoken, self)    File "/usr/local/lib/python3.6/dist-packages/pycparser/ply/yacc.py", line 193, in call_errorfunc      r = errorfunc(token)    File "/usr/local/lib/python3.6/dist-packages/pycparser/c_parser.py", line 1848, in p_error      column=self.clex.find_tok_column(p)))    File "/usr/local/lib/python3.6/dist-packages/pycparser/plyparser.py", line 67, in _parse_error      raise ParseError("%s: %s" % (coord, msg))  pycparser.plyparser.ParseError: /usr/include/crypt.h:33:6: before: __THROW  Traceback (most recent call last):    File "<string>", line 1, in <module>    File "/tmp/pip-install-mm2agm3f/pythonnet/setup.py", line 405, in <module>      zip_safe=False,    File "/usr/local/lib/python3.6/dist-packages/setuptools/__init__.py", line 129, in setup      return distutils.core.setup(**attrs)    File "/usr/lib/python3.6/distutils/core.py", line 148, in setup      dist.run_commands()    File "/usr/lib/python3.6/distutils/dist.py", line 955, in run_commands      self.run_command(cmd)    File "/usr/lib/python3.6/distutils/dist.py", line 974, in run_command      cmd_obj.run()    File "/usr/local/lib/python3.6/dist-packages/wheel/bdist_wheel.py", line 202, in run      self.run_command('build')    File "/usr/lib/python3.6/distutils/cmd.py", line 313, in run_command      self.distribution.run_command(command)    File "/usr/lib/python3.6/distutils/dist.py", line 974, in run_command      cmd_obj.run()    File "/usr/lib/python3.6/distutils/command/build.py", line 135, in run      self.run_command(cmd_name)    File "/usr/lib/python3.6/distutils/cmd.py", line 313, in run_command      self.distribution.run_command(command)    File "/usr/lib/python3.6/distutils/dist.py", line 974, in run_command      cmd_obj.run()    File "/usr/lib/python3.6/distutils/command/build_ext.py", line 339, in run      self.build_extensions()    File "/usr/lib/python3.6/distutils/command/build_ext.py", line 448, in build_extensions      self._build_extensions_serial()    File "/usr/lib/python3.6/distutils/command/build_ext.py", line 473, in _build_extensions_serial      self.build_extension(ext)    File "/tmp/pip-install-mm2agm3f/pythonnet/setup.py", line 191, in build_extension      subprocess.check_call([sys.executable, geninterop, interop_file])    File "/usr/lib/python3.6/subprocess.py", line 291, in check_call      raise CalledProcessError(retcode, cmd)  subprocess.CalledProcessError: Command '['/usr/bin/python3', 'tools/geninterop/geninterop.py', 'src/runtime/interop36m.cs']' returned non-zero exit status 1.    ----------------------------------------  Failed building wheel for pythonnet  Running setup.py clean for pythonnetFailed to build pythonnetInstalling collected packages: pythonnet  Running setup.py install for pythonnet ... error    Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-mm2agm3f/pythonnet/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-record-x4y7l5j6/install-record.txt --single-version-externally-managed --compile:    running install    running build    running build_ext    Checking for updates from https://www.nuget.org/api/v2/.    Currently running NuGet.exe 4.7.1.    NuGet.exe is up to date.    MSBuild auto-detection: using msbuild version '15.0' from '/usr/lib/mono/msbuild/15.0/bin'.    All packages listed in packages.config are already installed.    clang: warning: /usr/include/python3.6m: 'linker' input unused [-Wunused-command-line-argument]    Traceback (most recent call last):      File "tools/geninterop/geninterop.py", line 292, in <module>        sys.exit(main())      File "tools/geninterop/geninterop.py", line 274, in main        ast = parser.parse(python_h)      File "/usr/local/lib/python3.6/dist-packages/pycparser/c_parser.py", line 152, in parse        debug=debuglevel)      File "/usr/local/lib/python3.6/dist-packages/pycparser/ply/yacc.py", line 331, in parse        return self.parseopt_notrack(input, lexer, debug, tracking, tokenfunc)      File "/usr/local/lib/python3.6/dist-packages/pycparser/ply/yacc.py", line 1199, in parseopt_notrack        tok = call_errorfunc(self.errorfunc, errtoken, self)      File "/usr/local/lib/python3.6/dist-packages/pycparser/ply/yacc.py", line 193, in call_errorfunc        r = errorfunc(token)      File "/usr/local/lib/python3.6/dist-packages/pycparser/c_parser.py", line 1848, in p_error        column=self.clex.find_tok_column(p)))      File "/usr/local/lib/python3.6/dist-packages/pycparser/plyparser.py", line 67, in _parse_error        raise ParseError("%s: %s" % (coord, msg))    pycparser.plyparser.ParseError: /usr/include/crypt.h:33:6: before: __THROW    Traceback (most recent call last):      File "<string>", line 1, in <module>      File "/tmp/pip-install-mm2agm3f/pythonnet/setup.py", line 405, in <module>        zip_safe=False,      File "/usr/local/lib/python3.6/dist-packages/setuptools/__init__.py", line 129, in setup        return distutils.core.setup(**attrs)      File "/usr/lib/python3.6/distutils/core.py", line 148, in setup        dist.run_commands()      File "/usr/lib/python3.6/distutils/dist.py", line 955, in run_commands        self.run_command(cmd)      File "/usr/lib/python3.6/distutils/dist.py", line 974, in run_command        cmd_obj.run()      File "/usr/local/lib/python3.6/dist-packages/setuptools/command/install.py", line 61, in run        return orig.install.run(self)      File "/usr/lib/python3.6/distutils/command/install.py", line 589, in run        self.run_command('build')      File "/usr/lib/python3.6/distutils/cmd.py", line 313, in run_command        self.distribution.run_command(command)      File "/usr/lib/python3.6/distutils/dist.py", line 974, in run_command        cmd_obj.run()      File "/usr/lib/python3.6/distutils/command/build.py", line 135, in run        self.run_command(cmd_name)      File "/usr/lib/python3.6/distutils/cmd.py", line 313, in run_command        self.distribution.run_command(command)      File "/usr/lib/python3.6/distutils/dist.py", line 974, in run_command        cmd_obj.run()      File "/usr/lib/python3.6/distutils/command/build_ext.py", line 339, in run        self.build_extensions()      File "/usr/lib/python3.6/distutils/command/build_ext.py", line 448, in build_extensions        self._build_extensions_serial()      File "/usr/lib/python3.6/distutils/command/build_ext.py", line 473, in _build_extensions_serial        self.build_extension(ext)      File "/tmp/pip-install-mm2agm3f/pythonnet/setup.py", line 191, in build_extension        subprocess.check_call([sys.executable, geninterop, interop_file])      File "/usr/lib/python3.6/subprocess.py", line 291, in check_call        raise CalledProcessError(retcode, cmd)    subprocess.CalledProcessError: Command '['/usr/bin/python3', 'tools/geninterop/geninterop.py', 'src/runtime/interop36m.cs']' returned non-zero exit status 1.        ----------------------------------------Command "/usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-mm2agm3f/pythonnet/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-record-x4y7l5j6/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-install-mm2agm3f/pythonnet/