qwcode

(VE)[qwcode@qwcode tmp]$ pip install peppercorn==0.2
Collecting peppercorn==0.2
  Downloading peppercorn-0.2.tar.gz
Installing collected packages: peppercorn
  Running setup.py install for peppercorn
Successfully installed peppercorn-0.2
(VE)[qwcode@qwcode tmp]$ pip install deform
Collecting deform
  Using cached deform-0.9.9.tar.gz
Collecting Chameleon>=2.5.1 (from deform)

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(VE)[qwcode@qwcode tmp]$ pip --version
pip 6.1.1 from /tmp/VE/lib/python2.7/site-packages (python 2.7)
(VE)[qwcode@qwcode tmp]$ pip install -vv --no-clean peppercorn
Collecting peppercorn
  Getting page https://pypi.python.org/simple/peppercorn/
  1 location(s) to search for versions of peppercorn:
  * https://pypi.python.org/simple/peppercorn/
  Getting page https://pypi.python.org/simple/peppercorn/
  Analyzing links from page https://pypi.python.org/simple/peppercorn/
    Found link https://pypi.python.org/packages/source/p/peppercorn/peppercorn-0.1.tar.gz#md5=e130ffecc953a1f1ae5d1a25c10f85f3 (from https://pypi.python.org/simple/peppercorn/), version: 0.1

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break up https://github.com/pypa/pip/pull/511

part1: MERGED https://github.com/pypa/pip/pull/548
  - system_site_packages option for reset_env
  - pypi_server.PyPIProxy.setup() occur in a sitecustomize file (not pth file) to prevent pkg_resources.working_set corruption that corrupts the sys.path

part2: MERGED https://github.com/pypa/pip/pull/553
  - migrate existing tests to new test_user_site.py module

part3: MERGED https://github.com/pypa/pip/pull/567

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option	Right align	Center align
This	This	This
column	column	column
will	will	will
be	be	be
left	right	center
aligned	aligned	aligned

qwcode

Upgrading a package, w/o upgrading dependencies that are already satisifed

suppose the following packages: a, b, c, d

with the following dependency relationships between their versioned distributions

• a-1
• b

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Usage: pip wheel [OPTIONS] PACKAGE_NAMES...

Creates wheel archives from your requirements and place into ./wheels
(requires distribute>0.6.28 and wheel)

 -w --wheel-dir <DIR>  //alternative dir to place wheels into
 --force-rebuild               //rewrite existing wheels
 --unpack-only  <DIR>  //unpack to dir, for manual building with "setup.py bdist_wheel"
 -r, --requirement <FILENAME>
 -f, --find-links <URL>      

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"--package-cache"

- a new "pip install" config option that offers name-based (i.e. not url-based) caching.
- the "--download-cache" option would stay as it is, and not be altered
- the package-cache dir would just contain packages (e.g. "nose-1.2.tar.gz", or lxml-2.5[..].whl), anything you've installed while using it.
- the package-cache would be turned off by default, since the user assumes a certain amount of risk/responsibility in using it (no hash checking)
- the package-cache (if turned on) would be checked prior to using the PackageFinder (which searches pypi and findlinks)
    (if the req was "nose", any nose version in the package-cache would "win", unless --upgrade is specified)
- package-cache offers an alternative to this workflow:
    - pip install -d DIR PACKAGES

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Usage: pip COMMAND [OPTIONS]

Commands:
  bundle               Create pybundles (archives containing multiple packages)
  freeze               Output all currently installed packages (exact versions) to stdout
  help                 Show available commands
  install              Install packages
  search               Search PyPI
  show                 Output installed distributions (exact versions, files) to stdout
  uninstall            Uninstall packages

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Synopsis:

   pip install [options] <package> [<package> ...]

General Options:

  -V, --version              
      show version and exit

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virtualenv myVE
source myVE/bin/activate
cd myproject
pip -e .[testing]  #installs project into myVE in develop mode with dependencies and the testing extras
pip install somepkg  #install something else you want to try