InterpolationSyntaxError from get_info()

[djarecka]

Summary

getting an error running nipype workflow or simply nipype.get_info (related to #1970)

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/dorota/anaconda/envs/nipype_test/lib/python2.7/site-packages/nipype/__init__.py", line 48, in get_info
    return _get_pkg_info(os.path.dirname(__file__))
  File "/Users/dorota/anaconda/envs/nipype_test/lib/python2.7/site-packages/nipype/pkg_info.py", line 92, in get_pkg_info
    src, hsh = pkg_commit_hash(pkg_path)
  File "/Users/dorota/anaconda/envs/nipype_test/lib/python2.7/site-packages/nipype/pkg_info.py", line 58, in pkg_commit_hash
    archive_subst = cfg_parser.get('commit hash', 'archive_subst_hash')
  File "/Users/dorota/anaconda/envs/nipype_test/lib/python2.7/site-packages/backports/configparser/__init__.py", line 811, in get
    d)
  File "/Users/dorota/anaconda/envs/nipype_test/lib/python2.7/site-packages/backports/configparser/__init__.py", line 384, in before_get
    self._interpolate_some(parser, option, L, value, section, defaults, 1)
  File "/Users/dorota/anaconda/envs/nipype_test/lib/python2.7/site-packages/backports/configparser/__init__.py", line 434, in _interpolate_some
    "found: %r" % (rest,))
backports.configparser.InterpolationSyntaxError: '%' must be followed by '%' or '(', found: u'%h'

How to replicate the behavior

It can be replicated in conda environment (used conda create -n nipype_test python=2 nipype):
python -c "import nipype; nipype.get_info()"

If nipype is installed with pip the error disappears

[djarecka]

error is from this line

[oesteban]

Possible duplicate of #1880?

[djarecka]

@oesteban it looks like #1880 is about the installation problem as it was #1970. And we believed that we solved it with #2282
but I had a similar error when running error