`--no-clean` doesn't work when installing from local paths or dists

--no-clean doesn’t work when installing from local projects or local dists

e.g. the following don’t work

pip install  --no-clean someprojectdir/
pip install  --no-clean someproject-1.3.tar.gz

for an example, see https://github.com/pypa/pip/pull/2689#issuecomment-93604421 (this is a tox example, where tox installs from a local zip file)

[djpeaco]

I’m having problems using --no-clean at all, not just when installing from local paths. For example

$ pip install --no-cache-dir --no-clean -v netifaces

The final output is:

  ...
  Downloading from URL https://pypi.python.org/packages/source/n/netifaces/netifaces-0.10.4.tar.gz#md5=36da76e2cfadd24cc7510c2c0012eb1e (from https://pypi.python.org/simple/netifaces/)
  Running setup.py (path:/tmp/pip-build-_yORAp/netifaces/setup.py) egg_info for package netifaces
    Running command python setup.py egg_info
  Source in /tmp/pip-build-_yORAp/netifaces has version 0.10.4, which satisfies requirement netifaces from https://pypi.python.org/packages/source/n/netifaces/netifaces-0.10.4.tar.gz#md5=36da76e2cfadd24cc7510c2c0012eb1e
Installing collected packages: netifaces
  Running setup.py install for netifaces ...     Running command /home/djpeaco/.enthought/Canopy_64bit/User/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-_yORAp/netifaces/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-FEEBuO-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/djpeaco/.enthought/Canopy_64bit/User/include/site/python2.7/netifaces
done
  Removing source in /tmp/pip-build-_yORAp/netifaces
Successfully installed netifaces-0.10.4

And nothing is left in /tmp/pip-build-_yORAp/. The same happens if I use --build to specifiy another directory to download into. This is with:

• pip 8.0.2
• python 2.7.6
• centos 7.2

[abalkin]

Are there any plans to fix this? The only related activity so far is closing another issue (#4679) as a duplicate of this one. I see the same problem with pip 9.0.1, python 3.6.