Error when trying to install eralchemy

log

/Users/username/api_venv/bin/pip run on Fri May 22 12:05:29 2015
Downloading/unpacking eralchemy

  Getting page https://pypi.python.org/simple/eralchemy/
  URLs to search for versions for eralchemy:
  * https://pypi.python.org/simple/eralchemy/
  Analyzing links from page https://pypi.python.org/simple/eralchemy/
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.10-py2.py3-none-any.whl#md5=d4db1f4c52404b4a60f06b9d0288b4de (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.11-py2.py3-none-any.whl#md5=e96cc6f2c7cedb9d2f5fe203cf30a8e4 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.12-py2.py3-none-any.whl#md5=4bbb38aab05a5b1f73b173ebfe3db7f4 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.13-py2.py3-none-any.whl#md5=87eee6a105a90692859a9254d61e7ad0 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.14-py2.py3-none-any.whl#md5=3b426046bd3852ecffcbac2eef530b23 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.15-py2.py3-none-any.whl#md5=353db7b7d602da13bd4ed1ef3da95873 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.16-py2.py3-none-any.whl#md5=bac50997e9ee146f85812a02539669fd (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.17-py2.py3-none-any.whl#md5=b33a186aa6f657c851eef7aa9830c534 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.18-py2.py3-none-any.whl#md5=3de7db5b442410695cb85678092abe04 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.19-py2.py3-none-any.whl#md5=44108439fe746cf79ebbe068b9df27a3 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.20-py2.py3-none-any.whl#md5=cabdcfb260b961ec569db09c94fbf529 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.21-py2.py3-none-any.whl#md5=0c31683e0541479137c13da51a410004 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.22-py2.py3-none-any.whl#md5=b5cfacc06f7ea4312121637b10d0243c (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.23-py2.py3-none-any.whl#md5=e16b624e9eca4076cbaddd1aa2dedd7b (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.24-py2.py3-none-any.whl#md5=10659c7e8fbbf6130391e05e2cf35bfa (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.5-py2.py3-none-any.whl#md5=b1f4491f862b0d515a225fbf155f7e35 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.6-py2.py3-none-any.whl#md5=7d5170b83788b27738fd04149989689c (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.7-py2.py3-none-any.whl#md5=db28dfc077f1d8d622609d19f01a3e8d (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.8-py2.py3-none-any.whl#md5=9cb98e79eb6b929a331e3fd8bb2aad90 (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
    Skipping link https://pypi.python.org/packages/py2.py3/E/ERAlchemy/ERAlchemy-0.0.9-py2.py3-none-any.whl#md5=dcc07b3935fbdbed97f5c4e9c9893f2d (from https://pypi.python.org/simple/eralchemy/); unknown archive format: .whl
  Could not find any downloads that satisfy the requirement eralchemy

Cleaning up...

  Removing temporary dir /Users/username/api_venv/build...
No distributions at all found for eralchemy

Exception information:
Traceback (most recent call last):
  File "/Users/username/api_venv/lib/python2.7/site-packages/pip/basecommand.py", line 134, in main
    status = self.run(options, args)
  File "/Users/username/api_venv/lib/python2.7/site-packages/pip/commands/install.py", line 236, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/Users/username/api_venv/lib/python2.7/site-packages/pip/req.py", line 1085, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "/Users/username/api_venv/lib/python2.7/site-packages/pip/index.py", line 265, in find_requirement
    raise DistributionNotFound('No distributions at all found for %s' % req)
DistributionNotFound: No distributions at all found for eralchemy