Install of new release is failing

[tb102122]

There will likely be a release tonight, removing this warning for nearly all users, and demoting it to being a DEBUG message.

I'll unlock this sometime next week, since I imagine most folks will see this update sooner than later.

Originally posted by @pradyunsg in #9617 (comment)

the result is:

PS C:\WINDOWS\system32> pip install --upgrade pip
WARNING: Value for scheme.headers does not match. Please report this to #9617
distutils: c:\users\tobia\appdata\local\programs\python\python38\Include\UNKNOWN
sysconfig: c:\users\tobia\appdata\local\programs\python\python38\Include
WARNING: Additional context:
user = False
home = None
root = None
prefix = None
Requirement already satisfied: pip in c:\users\tobia\appdata\roaming\python\python38\site-packages (21.1)
Collecting pip
Using cached pip-21.1.1-py3-none-any.whl (1.5 MB)
Installing collected packages: pip
Attempting uninstall: pip
Found existing installation: pip 21.1
Uninstalling pip-21.1:
Successfully uninstalled pip-21.1
Rolling back uninstall of pip
Moving to c:\users\tobia\appdata\roaming\python\python38\scripts\pip.exe
from C:\Users\tobia\AppData\Local\Temp\pip-uninstall-th98f3rj\pip.exe
Moving to c:\users\tobia\appdata\roaming\python\python38\scripts\pip3.8.exe
from C:\Users\tobia\AppData\Local\Temp\pip-uninstall-th98f3rj\pip3.8.exe
Moving to c:\users\tobia\appdata\roaming\python\python38\scripts\pip3.exe
from C:\Users\tobia\AppData\Local\Temp\pip-uninstall-th98f3rj\pip3.exe
Moving to c:\users\tobia\appdata\roaming\python\python38\site-packages\pip-21.1.dist-info
from C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages~ip-21.1.dist-info
Moving to c:\users\tobia\appdata\roaming\python\python38\site-packages\pip
from C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages~ip
ERROR: Exception:
Traceback (most recent call last):
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\cli\base_command.py", line 180, in main
status = self.run(options, args)
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\cli\req_command.py", line 204, in wrapper
return func(self, options, args)
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\commands\install.py", line 393, in run
installed = install_given_reqs(
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\req_init.py", line 77, in install_given_reqs
requirement.install(
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\req\req_install.py", line 782, in install
install_wheel(
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\operations\install\wheel.py", line 810, in install_wheel
_install_wheel(
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\operations\install\wheel.py", line 720, in _install_wheel
generated_console_scripts = maker.make_multiple(scripts_to_generate)
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_vendor\distlib\scripts.py", line 418, in make_multiple
filenames.extend(self.make(specification, options))
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_internal\operations\install\wheel.py", line 462, in make
return super().make(specification, options)
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_vendor\distlib\scripts.py", line 407, in make
self._make_script(entry, filenames, options=options)
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_vendor\distlib\scripts.py", line 307, in _make_script
self._write_script(scriptnames, shebang, script, filenames, ext)
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_vendor\distlib\scripts.py", line 242, in _write_script
launcher = self._get_launcher('t')
File "C:\Users\tobia\AppData\Roaming\Python\Python38\site-packages\pip_vendor\distlib\scripts.py", line 386, in _get_launcher
raise ValueError(msg)
ValueError: Unable to find resource t64.exe in package pip._vendor.distlib

[uranusjr]

pip install --upgrade pip

This destroys pip on Windows. See #8450 (comment)