[Distutils] ez_setup.py -U setuptools does TWO downloads, TWO installs

[Phillip J. Eby]

At 04:02 PM 2/11/2007 +1100, John Machin wrote:
>On 11/02/2007 3:41 PM, Phillip J. Eby wrote:
>>At 12:59 PM 2/11/2007 +1100, John Machin wrote:
>>>Is this usual?
>>Yes.  ez_setup.py is a front-end to easy_install, that happens to also 
>>download and install the latest version of setuptools.  If you want to 
>>just install the latest version of setuptools, the '-U setuptools' is 
>>redundant, unless you already have setuptools installed and want to update it.
>
>Can we try again, please? Refer to the console log that I included. It 
>*was* upgrading:
>
>"""Removing setuptools 0.6c3 from easy-install.pth file"""

Yes, but you were upgrading using a NEW version of ez_setup.py.  If you'd 
used the already-present ez_setup.py (from when you installed 0.6c3), OR 
used the new ez_setup.py without the -U setuptools, you'd have only gotten 
one install/download.

Running ez_setup.py simply attempts to download and install the version 
that it wants.  Then it runs easy_install with any supplied command-line 
arguments.  Thus, passing "-U setuptools" to a *new* ez_setup.py is redundant.