pip download pip fails on Windows

[wiggin15]

• Pip version: 10.0.1
• Python version: 2.7.8
• Operating system: Windows 2012

Description:

I am trying to download the pip wheel file using "pip download" command. This fails with the following error:

~ pip download pip
ERROR: To modify pip, please run the following command:
c:\cygwin\home\administrator\python\bin\python.exe -m pip download pip

I expected to get the pip whl file downloaded to the local directory.
This looks related to the "self-modification" check that was designed to prevent "pip install pip" (#1299). It was already too broad (ea1319d) and is still too broad.

[pradyunsg]

See #5312.

Duplicate of #5311.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.