Can't install zc.recipe.egg using pip

[nazrulworld]

We have a recipe https://pypi.python.org/pypi/plone.recipe.sublimetext/ that is dependent on zc.recipe.egg. When I tried to install using pip it fails, Lastly I find out problem is in zc.recipe.egg that can't be installed through pip.
Bellows are details

PIP Version: 9.0.1
Python: 2.7.12

Exception:
Traceback (most recent call last):
  File "/tmp/py2/local/lib/python2.7/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/tmp/py2/local/lib/python2.7/site-packages/pip/commands/install.py", line 335, in run
    wb.build(autobuilding=True)
  File "/tmp/py2/local/lib/python2.7/site-packages/pip/wheel.py", line 749, in build
    self.requirement_set.prepare_files(self.finder)
  File "/tmp/py2/local/lib/python2.7/site-packages/pip/req/req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "/tmp/py2/local/lib/python2.7/site-packages/pip/req/req_set.py", line 666, in _prepare_file
    check_dist_requires_python(dist)
  File "/tmp/py2/local/lib/python2.7/site-packages/pip/utils/packaging.py", line 48, in check_dist_requires_python
    feed_parser.feed(metadata)
  File "/usr/lib/python2.7/email/feedparser.py", line 177, in feed
    self._input.push(data)
  File "/usr/lib/python2.7/email/feedparser.py", line 99, in push
    parts = data.splitlines(True)
AttributeError: 'NoneType' object has no attribute 'splitlines'

[jamadden]

This is actually a limitation in pip...it assumes anything that ends in ".egg" is a Python egg file, which is obviously not the case.

The solution is pip's --no-binary argument:

pip install --no-binary=zc.recipe.egg zc.recipe.egg # or whatever depends on zc.recipe.egg

That can go in a requirements.txt too, of course.

Example:

$ pip install zc.recipe.egg
Collecting zc.recipe.egg
Exception:
Traceback (most recent call last):
  File "//site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "//site-packages/pip/commands/install.py", line 335, in run
    wb.build(autobuilding=True)
  File "//site-packages/pip/wheel.py", line 749, in build
    self.requirement_set.prepare_files(self.finder)
  File "//site-packages/pip/req/req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "//site-packages/pip/req/req_set.py", line 666, in _prepare_file
    check_dist_requires_python(dist)
  File "//site-packages/pip/utils/packaging.py", line 48, in check_dist_requires_python
    feed_parser.feed(metadata)
  File "//2.7/email/feedparser.py", line 177, in feed
    self._input.push(data)
  File "//2.7/email/feedparser.py", line 99, in push
    parts = data.splitlines(True)
AttributeError: 'NoneType' object has no attribute 'splitlines'
$ pip install --no-binary=zc.recipe.egg zc.recipe.egg
Collecting zc.recipe.egg
  Using cached zc.recipe.egg-2.0.3.tar.gz
Collecting zc.buildout>=1.2.0 (from zc.recipe.egg)
  Using cached zc.buildout-2.9.4-py2.py3-none-any.whl
Requirement already satisfied: setuptools in ./site-packages (from zc.recipe.egg)
Skipping bdist_wheel for zc.recipe.egg, due to binaries being disabled for it.
Installing collected packages: zc.buildout, zc.recipe.egg
  Running setup.py install for zc.recipe.egg ... done
Successfully installed zc.buildout-2.9.4 zc.recipe.egg-2.0.3

[jamadden]

Pip bug: pypa/pip#3028

[nazrulworld]

Thank you so much @jamadden

[leorochael]

We have a recipe https://pypi.python.org/pypi/plone.recipe.sublimetext/ that is dependent on zc.recipe.egg. When I tried to install using pip it fails, Lastly I find out problem is in zc.recipe.egg that can't be installed through pip.

@nazrulworld, why do you need to install it with pip? Isn't it better to let buildout itself install it?

In any case, the underlying bug, which is pypa/setuptools#462, has a proposed fix on pypa/setuptools#1116.