ERROR at //build/toolchain/concurrent_links.gni:90:19: Script returned non-zero exit code.

I was trying to build ungoogled-chromium by following all of the steps shown in the README, but somehow, when I execute the build.py script, at some point it gives me this error after executing certain command, Any ideas on any possible fix for this? Appreciated

ERROR at //build/toolchain/concurrent_links.gni:90:19: Script returned non-zero exit code.
  _command_dict = exec_script("get_concurrent_links.py", _args, "scope")
                  ^----------
Current dir: D:/ungoogled-chromium-windows/build/src/out/Default/
Command: C:/Users/Matias/AppData/Local/Microsoft/WindowsApps/python3.exe D:/ungoogled-chromium-windows/build/src/build/toolchain/get_concurrent_links.py --mem_per_link_gb=6
Returned 9009.
See //build/gn_logs.gni:5:1: whence it was imported.
import("//build/toolchain/concurrent_links.gni")
^----------------------------------------------
See //BUILD.gn:17:1: whence it was imported.
import("//build/gn_logs.gni")
^---------------------------

D:\ungoogled-chromium-windows\build\src>exit
Traceback (most recent call last):
  File "D:\ungoogled-chromium-windows\build.py", line 220, in <module>
    main()
  File "D:\ungoogled-chromium-windows\build.py", line 212, in main
    _run_build_process('out\\Default\\gn.exe', 'gen', 'out\\Default', '--fail-on-unused-args')
  File "D:\ungoogled-chromium-windows\build.py", line 64, in _run_build_process
    subprocess.run(('cmd.exe', '/k'),
  File "C:\Users\Matias\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 524, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '('cmd.exe', '/k')' returned non-zero exit status 1.

D:\ungoogled-chromium-windows>```

[ghost]

After 8~ hours of building, I am really happy to say that I was able to successfully compile ungoogled-chromium for the performance oriented OS I am using. Thanks a lot for the help! I am going to be making a Pull Request soon with the Windows SDK issue I found. Thanks a lot once again!

[farteryhr]

You probably need to restart CMD after turning off the python aliases. BTW, only Python 3.6 - 3.9 is supported.

https://stackoverflow.com/questions/57485491/python-python3-executes-in-command-prompt-but-does-not-run-correctly

gn looks for Python 3 on Windows by default, and python3 links to a wrapper that connects you to Microsoft Store.

# The python interpreter to use by default. On Windows, this will look
# for python3.exe and python3.bat.
script_executable = "python3"

fell into the very same pitfall here, plus using python 310.

please consider updating the “Building” section in README.md about it assuming python3 command (which is not done by official python installer by default, and also windows 10 does this 💩 by default) and the minor version requirement.

and yes, the domsubcache.tar.gz pitfall got me too. please consider updating to “remove everything under build\ other than build\downloads_cache”.

thanks to this discussion, i only had to delete build\[anything but src] twice before succeeding.