[CentralOH] 2013-12-06 道場 Scribbles 落書/惡文?

[jep200404 at columbus.rr.com]

Solved a messy Python package/virtualenv problem. 

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Try to install most Python packages within a virtual environment with pip.
Install the barest minimum of Python packages with the system package manager.

Had much trouble with python packages in Linux Mint 15 MATE 32-bit
New virtual environments inherited all packages from system, 
even with --no-site-packages.
Could _not_ avoid inheriting system Python packages.
Linux Mint installs many Python packages.

Someone did a clean install of the Linux above,
and found that installing pip by installing virtualenv, 
seemed to solve the problem. See the attached tarball.
Compare requirements.20131207-1630-initial
with foo/requirements.20131207-1633-initial.
Follow installation in "installation" file.

The linuxmint-15-mate-dvd-32bit-20131207-1454-after-install-before-update
file might be helpful for restoring the messed up system.
Look at output of diff between above file and current list 
of installed system packages. 

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