Newer versions of path.py dependency are causing errors

[hvelarde]

Like this:

$ bin/buildout
...
Getting distribution for 'importlib_metadata>=0.5'.
warning: no previously-included files found matching '.gitignore'
no previously-included directories found matching 'build'
no previously-included directories found matching '.tox'
warning: install_lib: 'build/lib' does not exist -- no Python modules to install

zip_safe flag not set; analyzing archive contents...
Installing importlib-metadata 0.5
Caused installation of a distribution:
UNKNOWN 0.0.0
with a different project name.
Installing importlib-metadata 0.5
Caused installation of a distribution:
UNKNOWN 0.0.0
with a different version.
Got None.
While:
  Installing instance.
Error: There is a version conflict.
We already have: UNKNOWN 0.0.0
but path.py 11.4.1 requires 'importlib_metadata>=0.5'.

see: https://travis-ci.org/collective/collective.liveblog/jobs/435360599

[jone]

@hvelarde The builds of ftw.upgrade are working well with 11.4.1: https://ci.4teamwork.ch/builds/192531 You probably have a conflict with another addon you have installed. ftw.upgrade works with path.py >= 6.2 - did you try pinning down path.py?

[hvelarde]

that may be a setuptools issue; what version are you using?

[jone]

In the tests of ftw.upgrade we are not pinning dependencies, other than using the Plone KGS and some exceptions. The used versions are visible in the build logs (buildout): https://ci.4teamwork.ch/builds/192531

[hvelarde]

you seem to be using setuptools = 33.1.1, I'm using setuptools = 26.1.1.

[mauritsvanrees]

I see something similar with Plone 5.1.4 or 5.1.5-pending and ftw.upgrade:

$ cat buildout.cfg
[buildout]
extends =
    http://dist.plone.org/release/5.1.5-pending/versions.cfg
parts =
    instance

[instance]
recipe = plone.recipe.zope2instance
user = admin:admin
eggs =
    Plone
    ftw.upgrade
$ virtualenv -p python2.7 .
$ curl -O http://dist.plone.org/release/5.1.5-pending/requirements.txt
$ bin/pip install -r requirements.txt 
$ bin/buildout 
Uninstalling instance.
Unused options for buildout: 'zope-directory'.
Installing instance.
Getting distribution for 'importlib_metadata>=0.5'.
/anaconda2/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'use_scm_version'
  warnings.warn(msg)
warning: no previously-included files found matching '.gitignore'
no previously-included directories found matching 'build'
no previously-included directories found matching '.tox'
zip_safe flag not set; analyzing archive contents...
While:
  Installing instance.
  Getting distribution for 'importlib_metadata>=0.5'.

An internal error occurred due to a bug in either zc.buildout or in a
recipe being used:
Traceback (most recent call last):
  File "/Users/maurits/tmp/testplone/lib/python2.7/site-packages/zc/buildout/buildout.py", line 2127, in main
    getattr(buildout, command)(args)
  File "/Users/maurits/tmp/testplone/lib/python2.7/site-packages/zc/buildout/buildout.py", line 797, in install
    installed_files = self[part]._call(recipe.install)
  File "/Users/maurits/tmp/testplone/lib/python2.7/site-packages/zc/buildout/buildout.py", line 1557, in _call
    return f()
  File "/Users/maurits/shared-eggs/cp27m/plone.recipe.zope2instance-4.4.1-py2.7.egg/plone/recipe/zope2instance/__init__.py", line 169, in install
    installed.extend(self.install_scripts())
  File "/Users/maurits/shared-eggs/cp27m/plone.recipe.zope2instance-4.4.1-py2.7.egg/plone/recipe/zope2instance/__init__.py", line 668, in install_scripts
    requirements, ws = self.egg.working_set(['plone.recipe.zope2instance'])
  File "/Users/maurits/shared-eggs/cp27m/zc.recipe.egg-2.0.5-py2.7.egg/zc/recipe/egg/egg.py", line 84, in working_set
    allow_hosts=self.allow_hosts,
  File "/Users/maurits/shared-eggs/cp27m/zc.recipe.egg-2.0.5-py2.7.egg/zc/recipe/egg/egg.py", line 162, in _working_set
    allow_hosts=allow_hosts)
  File "/Users/maurits/tmp/testplone/lib/python2.7/site-packages/zc/buildout/easy_install.py", line 924, in install
    return installer.install(specs, working_set)
  File "/Users/maurits/tmp/testplone/lib/python2.7/site-packages/zc/buildout/easy_install.py", line 726, in install
    for dist in self._get_dist(req, ws):
  File "/Users/maurits/tmp/testplone/lib/python2.7/site-packages/zc/buildout/easy_install.py", line 570, in _get_dist
    dists = [_move_to_eggs_dir_and_compile(dist, self._dest)]
  File "/Users/maurits/tmp/testplone/lib/python2.7/site-packages/zc/buildout/easy_install.py", line 1712, in _move_to_eggs_dir_and_compile
    os.rename(tmp_loc, newloc)
OSError: [Errno 66] Directory not empty

When I remove ftw.upgrade from the eggs, buildout works fine. When I first bin/pip install importlib_metadata, the next buildout with ftw.upgrade works fine too.