Instructions for running EDK2 CI on an Ubuntu system? ("System.TypeLoadException: Failure has occurred while loading a type.")

[rebecca@bsdio.com]

Is there any guide to getting the CI system (e.g. .pytool/CISettings.py) 
working on an Ubuntu system?

I ran "pip install -r pip-requirements.txt", then installed mono-runtime 
to get stuart_setup working, and have then installed 
libmono-system-componentmodel-composition4.0-cil, 
libmono-system-componentmodel-dataannotations4.0-cil, 
libmono-system-net-http4.0-cil, libmono-windowsbase4.0-cil, 
libmono-microsoft-build-utilities-v4.0-4.0-cil, 
libmono-system-xml-linq4.0-cil, libmono-system-io-compression4.0-cil, 
libmono-system-data-services-client4.0-cil, and 
libmono-system-servicemodel4.0a-cil
  to try and get stuart_update working, but after all that have run into 
the following error:


DEBUG - Cleaning dependency directory for 'mu_nasm'...
DEBUG - Getting host info for host: uname_result(system='Linux', 
node='photon', release='5.3.0-23-generic', version='#25-Ubuntu SMP Tue 
Nov 12 09:22:33 UTC 2019', machine='x86_64', processor='x86_64')
INFO - Cmd to run is: mono 
/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/bin/NuGet.exe 
locals global-packages -list
INFO - ------------------------------------------------
INFO - --------------Cmd Output Starting---------------
INFO - ------------------------------------------------
INFO - Failure has occurred while loading a type.
INFO - System.TypeLoadException: Failure has occurred while loading a type.
INFO -   at NuGet.CommandLine.CommandLineParser.ExtractOptions 
(NuGet.CommandLine.ICommand command, 
System.Collections.Generic.IEnumerator`1[T] argsEnumerator) [0x0013a] in 
<f495a477196947558735199950d701a7>:0
INFO -   at NuGet.CommandLine.CommandLineParser.ParseCommandLine 
(System.Collections.Generic.IEnumerable`1[T] commandLineArgs) [0x00043] 
in <f495a477196947558735199950d701a7>:0
INFO -   at NuGet.CommandLine.Program.MainCore (System.String 
workingDirectory, System.String[] args) [0x00130] in 
<f495a477196947558735199950d701a7>:0
INFO - ------------------------------------------------
INFO - --------------Cmd Output Finished---------------
INFO - --------- Running Time (mm:ss): 00:00 ----------
INFO - ------------------------------------------------
Traceback (most recent call last):
   File "/home/bcran/.local/bin/stuart_update", line 8, in <module>
     sys.exit(main())
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/invocables/edk2_update.py", 
line 122, in main
     Edk2Update().Invoke()
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/base_abstract_invocable.py", 
line 139, in Invoke
     retcode = self.Go()
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/invocables/edk2_update.py", 
line 92, in Go
     (build_env_old, shell_env_old, _) = self.PerformUpdate()
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/invocables/edk2_update.py", 
line 62, in PerformUpdate
     (success, failure) = 
self_describing_environment.UpdateDependencies(ws_root, scopes)
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/environment/self_describing_environment.py", 
line 294, in UpdateDependencies
     return build_env.update_extdeps(shell_env)
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/environment/self_describing_environment.py", 
line 205, in update_extdeps
     extdep.fetch()
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/environment/extdeptypes/nuget_dependency.py", 
line 162, in fetch
     if self._fetch_from_cache(package_name):
   File 
"/home/bcran/.local/lib/python3.7/site-packages/edk2toolext/environment/extdeptypes/nuget_dependency.py", 
line 95, in _fetch_from_cache
     if not os.path.isdir(NugetDependency.global_cache_path):
   File "/usr/lib/python3.7/genericpath.py", line 42, in isdir
     st = os.stat(s)
TypeError: stat: path should be string, bytes, os.PathLike or integer, 
not NoneType


-- 
Rebecca Cran