Installation issue: python install --home=... fails

In article <528E8AAC.1090104@...86...>,
Michael Droettboom <mdroe@...86...>

When you use |--home|, distutils assumes you are referring to a home
directory in which you have a tree of libraries in |lib|lib64| living
there, so it appends |lib64/python| to the given path:

>> python install --home=/foo
running install
Checking .pth file supportin /foo/lib64/python/
error: can't create or remove files in install directory|

So the issue is not that your PYTHONPATH doesn't contain
(which it does) but that it doesn't contain

With matplotlib 1.2.1, we used raw distutils and not setuptools, which
does the same thing without the strict check. And that does allow users
to shoot themselves in the foot, since the check is in fact right when
it says things won't work:

>> git checkout v1.2.1
> mkdir ~/foo
> python install --home=~/foo
> PYTHONPATH=~/foo python
Python2.7.5 (default, Oct8 2013,12:19:40)
[GCC4.8.1 20130603 (Red Hat4.8.1-1)] on linux2
Type"help","copyright","credits" or "license" for more information.
>>>import matplotlib
Traceback (most recent call last):
   File"<stdin>", line1,in <module>
ImportError: No module named matplotlib|

I think what you really want to use is |--install-lib|, which will
install the matplotlib library directly inside of the given path, which
(if it's also on the `PYTHONPATH`) it will work.

Thank you. That did it!

For the record, we do actually want the files in <path>/lib/python. So I
fixed it by manually adding <path>/lib/python to PYTHONPATH before
running the installer.

It would help if the error message showed which path was expected to be
on the PYTHONPATH, but now that I know I'm happy.

-- Russell