setuptools_scm: pip install -r requirements.txt fails to "setuptools-scm was unable to detect version for '/tmp'"

Version: 1.15.0

I have requirements declared in setup.py, so with requirements.txt file of:

.

pip install -r requirement.txt:

Processing /home/musttu/Code/lib/wires/aws
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-pgsLbN-build/setup.py", line 31, in <module>
        'pastry-common==3.2.1.dev30',
      File "/usr/lib/python2.7/distutils/core.py", line 111, in setup
        _setup_distribution = dist = klass(attrs)
      File "/home/musttu/Code/virtualenvs/wires/local/lib/python2.7/site-packages/setuptools/dist.py", line 318, in __init__
        _Distribution.__init__(self, attrs)
      File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__
        self.finalize_options()
      File "/home/musttu/Code/virtualenvs/wires/local/lib/python2.7/site-packages/setuptools/dist.py", line 376, in finalize_options
        ep.load()(self, ep.name, value)
      File "/home/musttu/Code/virtualenvs/wires/local/lib/python2.7/site-packages/setuptools_scm/integration.py", line 19, in version_keyword
        dist.metadata.version = get_version(**value)
      File "/home/musttu/Code/virtualenvs/wires/local/lib/python2.7/site-packages/setuptools_scm/__init__.py", line 117, in get_version
        parsed_version = _do_parse(root, parse)
      File "/home/musttu/Code/virtualenvs/wires/local/lib/python2.7/site-packages/setuptools_scm/__init__.py", line 95, in _do_parse
        "use git+https://github.com/user/proj.git#egg=proj" % root)
    LookupError: setuptools-scm was unable to detect version for '/tmp'.

I don’t believe it’s possible to fix this within setuptools-scm, however. If pip uses /tmp for temporarily building/handling the package, there’s simply no version information available and nothing to be done. Correct? Would you have any guesses if it’s possible to make it work on pip side?

There is a related ticket in https://github.com/pypa/setuptools_scm/issues/46 but I think that was closed because user tried to install an sdist there.