rez-pip should assume python provided pip

[nerdvegas]

Newer python versions ship with pip, however rez-pip first searches for a rezified pip package, falling back to its own pip installation if one isn't found.

Instead, rez-pip should (in this order):

• Search for rezified python matching python version request;
• If found, test if pip is present;
• If pip is present, use it;
• If not present, search for rezified pip (this is for backwards compatibility);
• If rezified pip is found, use it;
• If not, fall back to rez's python installation.

The rez-pip --pip-version arg should also be marked as deprecated (though not removed just yet).

[maxnbk]

Could it be made possible to influence the request for pip made in step 4? I have had times where I needed to test against one rezified pip over another.

[JeanChristopheMorinPerso]

Search for rezified python matching python version request;

What happens if the python version is not requested? We take the latest? Or we simply make the --python-version mandatory? I think I'd go with --python-version being mandatory so that it is more explicit which version is taken and avoids mistakes and better fits with the general philosophy of /path/to/python -m pip.

What do you think?

[nerdvegas]

I think it's more "rezish"(?) to just default to latest python package found - not specifying python version should be equivalent to a 'rez-env python' if you see what I mean. Wrt specific rezified pip - I wouldn't put too much effort into this, since we know we're headed to a place (py3) where we expect pip to be provided by python itself. In the meantime, it's not so hard to alter REZ_PACKAGES_PATH to get the correct pip chosen anyway. Having said that, I think better logging verbosity and addition of a `--dry-run` mode would further justify leaving things as they are. A

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On Mon, Sep 2, 2019 at 12:07 AM Jean-Christophe Morin < ***@***.***> wrote: Search for rezified python matching python version request; What happens if the python version is not requested? We take the latest? Or we simply make the --python-version mandatory? I think I'd go with --python-version being mandatory so that it is more explicit which version is taken and avoids mistakes and better fits with the general philosophy of /path/to/python -m pip. What do you think? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#706>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAMOUSQHNXPXCTQEBZYYH4TQHPECJANCNFSM4ISJ5LEQ> .