$ pip install git+https://github.com/pythonnet/pythonnet
Collecting git+https://github.com/pythonnet/pythonnet
  Cloning https://github.com/pythonnet/pythonnet to /tmp/pip-jY3N1G-build
Installing collected packages: pythonnet
  Running setup.py install for pythonnet ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-jY3N1G-build/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-Xvwc8d-record/install-record.txt --single-version-externally-managed --compile:
    usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
       or: -c --help [cmd1 cmd2 ...]
       or: -c --help-commands
       or: -c cmd --help
    
    error: option --single-version-externally-managed not recognized
    
    ----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-jY3N1G-build/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-Xvwc8d-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-jY3N1G-build/

$ sudo -H pip install pythonnet
Collecting pythonnet
  Using cached pythonnet-2.3.0.tar.gz
Building wheels for collected packages: pythonnet
  Running setup.py bdist_wheel for pythonnet ... error
  Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-2paJ4D/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/tmpAYPkUUpip-wheel- --python-tag cp27:
  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 4.5.1.
  Update successful.
  MSBuild auto-detection: using msbuild version '14.0' from '/usr/lib/mono/xbuild/14.0/bin'.
  Restoring NuGet package NUnit.3.6.0.
  Restoring NuGet package UnmanagedExports.1.2.7.
  Restoring NuGet package NUnit.ConsoleRunner.3.6.0.
  Adding package 'NUnit.3.6.0' to folder '/tmp/pip-build-2paJ4D/pythonnet/packages'
  Adding package 'UnmanagedExports.1.2.7' to folder '/tmp/pip-build-2paJ4D/pythonnet/packages'
  Adding package 'NUnit.ConsoleRunner.3.6.0' to folder '/tmp/pip-build-2paJ4D/pythonnet/packages'
  Added package 'UnmanagedExports.1.2.7' to folder '/tmp/pip-build-2paJ4D/pythonnet/packages'
  Added package 'NUnit.ConsoleRunner.3.6.0' to folder '/tmp/pip-build-2paJ4D/pythonnet/packages'
  Added package 'NUnit.3.6.0' to folder '/tmp/pip-build-2paJ4D/pythonnet/packages'
  
  NuGet Config files used:
      /root/.config/NuGet/NuGet.Config
  
  Feeds used:
      /root/.nuget/packages/
      https://api.nuget.org/v3/index.json
  
  Installed:
      3 package(s) to packages.config projects
  
  >>>> xbuild tool is deprecated and will be removed in future updates, use msbuild instead <<<<
  
  XBuild Engine Version 14.0
  Mono, Version 5.10.1.20
  Copyright (C) 2005-2013 Various Mono authors
  
  >>>> xbuild tool is deprecated and will be removed in future updates, use msbuild instead <<<<
  
  XBuild Engine Version 14.0
  Mono, Version 5.10.1.20
  Copyright (C) 2005-2013 Various Mono authors
  		Configuration: ReleaseMono Platform: x64
  /tmp/pip-build-2paJ4D/pythonnet/src/runtime/Python.Runtime.csproj: error : Error executing task Copy: Error converting Property named 'SourceFiles' with value '$(TargetAssemblyPdb)' to type Microsoft.Build.Framework.ITaskItem[]: Can't concatenate Item list with other strings where an item list is expected ('@(_OutDirItem->'%(FullPath)')', 'Python.Runtime.pdb'). Use semi colon to separate items.
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "/tmp/pip-build-2paJ4D/pythonnet/setup.py", line 405, in <module>
      zip_safe=False,
    File "/usr/local/lib/python2.7/dist-packages/setuptools/__init__.py", line 129, in setup
      return distutils.core.setup(**attrs)
    File "/usr/lib/python2.7/distutils/core.py", line 151, in setup
      dist.run_commands()
    File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
      self.run_command(cmd)
    File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
      cmd_obj.run()
    File "/usr/local/lib/python2.7/dist-packages/wheel/bdist_wheel.py", line 204, in run
      self.run_command('build')
    File "/usr/lib/python2.7/distutils/cmd.py", line 326, in run_command
      self.distribution.run_command(command)
    File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
      cmd_obj.run()
    File "/usr/lib/python2.7/distutils/command/build.py", line 128, in run
      self.run_command(cmd_name)
    File "/usr/lib/python2.7/distutils/cmd.py", line 326, in run_command
      self.distribution.run_command(command)
    File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
      cmd_obj.run()
    File "/usr/lib/python2.7/distutils/command/build_ext.py", line 339, in run
      self.build_extensions()
    File "/usr/lib/python2.7/distutils/command/build_ext.py", line 448, in build_extensions
      self.build_extension(ext)
    File "/tmp/pip-build-2paJ4D/pythonnet/setup.py", line 222, in build_extension
      subprocess.check_call(" ".join(cmd + ["/t:Build"]), shell=use_shell)
    File "/usr/lib/python2.7/subprocess.py", line 541, in check_call
      raise CalledProcessError(retcode, cmd)
  subprocess.CalledProcessError: Command 'xbuild pythonnet.sln /p:Configuration=ReleaseMono /p:Platform=x64 /p:DefineConstants="PYTHON27,PYTHON2,UCS4,MONO_LINUX,PYTHON_WITHOUT_ENABLE_SHARED" /p:PythonBuildDir="/tmp/pip-build-2paJ4D/pythonnet/build/lib.linux-x86_64-2.7" /p:PythonInteropFile="interop27.cs" /verbosity:minimal /t:Build' returned non-zero exit status 1
  
  ----------------------------------------
  Failed building wheel for pythonnet
  Running setup.py clean for pythonnet
Failed to build pythonnet
Installing collected packages: pythonnet
  Running setup.py install for pythonnet ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-2paJ4D/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-e6eIuH-record/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 4.5.1.
    NuGet.exe is up to date.
    MSBuild auto-detection: using msbuild version '14.0' from '/usr/lib/mono/xbuild/14.0/bin'.
    All packages listed in packages.config are already installed.
    
    >>>> xbuild tool is deprecated and will be removed in future updates, use msbuild instead <<<<
    
    XBuild Engine Version 14.0
    Mono, Version 5.10.1.20
    Copyright (C) 2005-2013 Various Mono authors
    
    >>>> xbuild tool is deprecated and will be removed in future updates, use msbuild instead <<<<
    
    XBuild Engine Version 14.0
    Mono, Version 5.10.1.20
    Copyright (C) 2005-2013 Various Mono authors
    		Configuration: ReleaseMono Platform: x64
    /tmp/pip-build-2paJ4D/pythonnet/src/runtime/Python.Runtime.csproj: error : Error executing task Copy: Error converting Property named 'SourceFiles' with value '$(TargetAssemblyPdb)' to type Microsoft.Build.Framework.ITaskItem[]: Can't concatenate Item list with other strings where an item list is expected ('@(_OutDirItem->'%(FullPath)')', 'Python.Runtime.pdb'). Use semi colon to separate items.
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-2paJ4D/pythonnet/setup.py", line 405, in <module>
        zip_safe=False,
      File "/usr/local/lib/python2.7/dist-packages/setuptools/__init__.py", line 129, in setup
        return distutils.core.setup(**attrs)
      File "/usr/lib/python2.7/distutils/core.py", line 151, in setup
        dist.run_commands()
      File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
        self.run_command(cmd)
      File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "/usr/local/lib/python2.7/dist-packages/setuptools/command/install.py", line 61, in run
        return orig.install.run(self)
      File "/usr/lib/python2.7/distutils/command/install.py", line 601, in run
        self.run_command('build')
      File "/usr/lib/python2.7/distutils/cmd.py", line 326, in run_command
        self.distribution.run_command(command)
      File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "/usr/lib/python2.7/distutils/command/build.py", line 128, in run
        self.run_command(cmd_name)
      File "/usr/lib/python2.7/distutils/cmd.py", line 326, in run_command
        self.distribution.run_command(command)
      File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
        cmd_obj.run()
      File "/usr/lib/python2.7/distutils/command/build_ext.py", line 339, in run
        self.build_extensions()
      File "/usr/lib/python2.7/distutils/command/build_ext.py", line 448, in build_extensions
        self.build_extension(ext)
      File "/tmp/pip-build-2paJ4D/pythonnet/setup.py", line 222, in build_extension
        subprocess.check_call(" ".join(cmd + ["/t:Build"]), shell=use_shell)
      File "/usr/lib/python2.7/subprocess.py", line 541, in check_call
        raise CalledProcessError(retcode, cmd)
    subprocess.CalledProcessError: Command 'xbuild pythonnet.sln /p:Configuration=ReleaseMono /p:Platform=x64 /p:DefineConstants="PYTHON27,PYTHON2,UCS4,MONO_LINUX,PYTHON_WITHOUT_ENABLE_SHARED" /p:PythonBuildDir="/tmp/pip-build-2paJ4D/pythonnet/build/lib.linux-x86_64-2.7" /p:PythonInteropFile="interop27.cs" /verbosity:minimal /t:Build' returned non-zero exit status 1
    
    ----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-2paJ4D/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-e6eIuH-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-2paJ4D/pythonnet/