diff --git a/py/_vendored_packages/apipkg-1.4.dist-info/DESCRIPTION.rst b/py/_vendored_packages/apipkg-1.4.dist-info/DESCRIPTION.rst
deleted file mode 100644
index 54822200..00000000
--- a/py/_vendored_packages/apipkg-1.4.dist-info/DESCRIPTION.rst
+++ /dev/null
@@ -1,87 +0,0 @@
-Welcome to apipkg!
-------------------------
-
-With apipkg you can control the exported namespace of a
-python package and greatly reduce the number of imports for your users.
-It is a `small pure python module`_ that works on virtually all Python
-versions, including CPython2.3 to Python3.1, Jython and PyPy.  It co-operates
-well with Python's ``help()`` system, custom importers (PEP302) and common
-command line completion tools.
-
-Usage is very simple: you can require 'apipkg' as a dependency or you
-can copy paste the <200 Lines of code into your project.
-
-
-Tutorial example
--------------------
-
-Here is a simple ``mypkg`` package that specifies one namespace
-and exports two objects imported from different modules::
-
-    # mypkg/__init__.py
-    import apipkg
-    apipkg.initpkg(__name__, {
-        'path': {
-            'Class1': "_mypkg.somemodule:Class1",
-            'clsattr': "_mypkg.othermodule:Class2.attr",
-        }
-    }
-
-The package is initialized with a dictionary as namespace.
-
-You need to create a ``_mypkg`` package with a ``somemodule.py``
-and ``othermodule.py`` containing the respective classes.
-The ``_mypkg`` is not special - it's a completely
-regular python package.
-
-Namespace dictionaries contain ``name: value`` mappings
-where the value may be another namespace dictionary or
-a string specifying an import location.  On accessing
-an namespace attribute an import will be performed::
-
-    >>> import mypkg
-    >>> mypkg.path
-    <ApiModule 'mypkg.path'>
-    >>> mypkg.path.Class1   # '_mypkg.somemodule' gets imported now
-    <class _mypkg.somemodule.Class1 at 0xb7d428fc>
-    >>> mypkg.path.clsattr  # '_mypkg.othermodule' gets imported now
-    4 # the value of _mypkg.othermodule.Class2.attr
-
-The ``mypkg.path`` namespace and its two entries are
-loaded when they are accessed.   This means:
-
-* lazy loading - only what is actually needed is ever loaded
-
-* only the root "mypkg" ever needs to be imported to get
-  access to the complete functionality.
-
-* the underlying modules are also accessible, for example::
-
-    from mypkg.sub import Class1
-
-
-Including apipkg in your package
---------------------------------------
-
-If you don't want to add an ``apipkg`` dependency to your package you
-can copy the `apipkg.py`_ file somewhere to your own package,
-for example ``_mypkg/apipkg.py`` in the above example.  You
-then import the ``initpkg`` function from that new place and
-are good to go.
-
-.. _`small pure python module`:
-.. _`apipkg.py`: http://bitbucket.org/hpk42/apipkg/src/tip/apipkg.py
-
-Feedback?
------------------------
-
-If you have questions you are welcome to
-
-* join the #pylib channel on irc.freenode.net
-* subscribe to the http://codespeak.net/mailman/listinfo/py-dev list.
-* create an issue on http://bitbucket.org/hpk42/apipkg/issues
-
-have fun,
-holger krekel
-
-
diff --git a/py/_vendored_packages/apipkg-1.4.dist-info/RECORD b/py/_vendored_packages/apipkg-1.4.dist-info/RECORD
deleted file mode 100644
index dc72959d..00000000
--- a/py/_vendored_packages/apipkg-1.4.dist-info/RECORD
+++ /dev/null
@@ -1,9 +0,0 @@
-apipkg.py,sha256=BNnv_qvq8zZvku-uudoqgp3XTNFbwsNUmtzOKrVI7X0,6420
-apipkg-1.4.dist-info/top_level.txt,sha256=3TGS6nmN7kjxhUK4LpPCB3QkQI34QYGrT0ZQGWajoZ8,7
-apipkg-1.4.dist-info/METADATA,sha256=Fk_8BrHyXE--kvB3_ZBKgwvPaKusAZUjchH-kpB63Hs,3491
-apipkg-1.4.dist-info/DESCRIPTION.rst,sha256=RkMQqk5ljhGy0DiZkR_nbpjqvwCIhuIEHsyvkn3O96k,2803
-apipkg-1.4.dist-info/metadata.json,sha256=GdshYrA_7gAII3E3EQMH-31BHzU-klTZ6bPQzlDmuy4,779
-apipkg-1.4.dist-info/WHEEL,sha256=AvR0WeTpDaxT645bl5FQxUK6NPsTls2ttpcGJg3j1Xg,110
-apipkg-1.4.dist-info/RECORD,,
-apipkg-1.4.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
-__pycache__/apipkg.cpython-35.pyc,,
diff --git a/py/_vendored_packages/apipkg-1.4.dist-info/metadata.json b/py/_vendored_packages/apipkg-1.4.dist-info/metadata.json
deleted file mode 100644
index 05609b99..00000000
--- a/py/_vendored_packages/apipkg-1.4.dist-info/metadata.json
+++ /dev/null
@@ -1 +0,0 @@
-{"license": "MIT License", "name": "apipkg", "metadata_version": "2.0", "generator": "bdist_wheel (0.24.0)", "summary": "apipkg: namespace control and lazy-import mechanism", "platform": "unix", "version": "1.4", "extensions": {"python.details": {"project_urls": {"Home": "http://bitbucket.org/hpk42/apipkg"}, "document_names": {"description": "DESCRIPTION.rst"}, "contacts": [{"role": "author", "email": "holger at merlinux.eu", "name": "holger krekel"}]}}, "classifiers": ["Development Status :: 4 - Beta", "Intended Audience :: Developers", "License :: OSI Approved :: MIT License", "Operating System :: POSIX", "Operating System :: Microsoft :: Windows", "Operating System :: MacOS :: MacOS X", "Topic :: Software Development :: Libraries", "Programming Language :: Python"]}
\ No newline at end of file
diff --git a/py/_vendored_packages/apipkg-1.4.dist-info/INSTALLER b/py/_vendored_packages/apipkg-1.5.dist-info/INSTALLER
similarity index 100%
rename from py/_vendored_packages/apipkg-1.4.dist-info/INSTALLER
rename to py/_vendored_packages/apipkg-1.5.dist-info/INSTALLER
diff --git a/py/_vendored_packages/apipkg-1.4.dist-info/METADATA b/py/_vendored_packages/apipkg-1.5.dist-info/METADATA
similarity index 69%
rename from py/_vendored_packages/apipkg-1.4.dist-info/METADATA
rename to py/_vendored_packages/apipkg-1.5.dist-info/METADATA
index eb7e60ac..ac14b4bb 100644
--- a/py/_vendored_packages/apipkg-1.4.dist-info/METADATA
+++ b/py/_vendored_packages/apipkg-1.5.dist-info/METADATA
@@ -1,10 +1,11 @@
-Metadata-Version: 2.0
+Metadata-Version: 2.1
 Name: apipkg
-Version: 1.4
+Version: 1.5
 Summary: apipkg: namespace control and lazy-import mechanism
-Home-page: http://bitbucket.org/hpk42/apipkg
+Home-page: https://github.com/pytest-dev/apipkg
 Author: holger krekel
-Author-email: holger at merlinux.eu
+Maintainer: Ronny Pfannschmidt
+Maintainer-email: opensource@ronnypfannschmidt.de
 License: MIT License
 Platform: unix
 Platform: linux
@@ -19,19 +20,25 @@ Classifier: Operating System :: Microsoft :: Windows
 Classifier: Operating System :: MacOS :: MacOS X
 Classifier: Topic :: Software Development :: Libraries
 Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
 
 Welcome to apipkg!
 ------------------------
 
-With apipkg you can control the exported namespace of a
-python package and greatly reduce the number of imports for your users.
-It is a `small pure python module`_ that works on virtually all Python
-versions, including CPython2.3 to Python3.1, Jython and PyPy.  It co-operates
-well with Python's ``help()`` system, custom importers (PEP302) and common
-command line completion tools.
+With apipkg you can control the exported namespace of a Python package and
+greatly reduce the number of imports for your users.
+It is a `small pure Python module`_ that works on CPython 2.7 and 3.4+,
+Jython and PyPy. It cooperates well with Python's ``help()`` system,
+custom importers (PEP302) and common command-line completion tools.
 
 Usage is very simple: you can require 'apipkg' as a dependency or you
-can copy paste the <200 Lines of code into your project.
+can copy paste the ~200 lines of code into your project.
 
 
 Tutorial example
@@ -54,7 +61,7 @@ The package is initialized with a dictionary as namespace.
 You need to create a ``_mypkg`` package with a ``somemodule.py``
 and ``othermodule.py`` containing the respective classes.
 The ``_mypkg`` is not special - it's a completely
-regular python package.
+regular Python package.
 
 Namespace dictionaries contain ``name: value`` mappings
 where the value may be another namespace dictionary or
@@ -75,7 +82,7 @@ loaded when they are accessed.   This means:
 * lazy loading - only what is actually needed is ever loaded
 
 * only the root "mypkg" ever needs to be imported to get
-  access to the complete functionality.
+  access to the complete functionality
 
 * the underlying modules are also accessible, for example::
 
@@ -91,8 +98,8 @@ for example ``_mypkg/apipkg.py`` in the above example.  You
 then import the ``initpkg`` function from that new place and
 are good to go.
 
-.. _`small pure python module`:
-.. _`apipkg.py`: http://bitbucket.org/hpk42/apipkg/src/tip/apipkg.py
+.. _`small pure Python module`:
+.. _`apipkg.py`: https://github.com/pytest-dev/apipkg/blob/master/src/apipkg/__init__.py
 
 Feedback?
 -----------------------
@@ -100,8 +107,7 @@ Feedback?
 If you have questions you are welcome to
 
 * join the #pylib channel on irc.freenode.net
-* subscribe to the http://codespeak.net/mailman/listinfo/py-dev list.
-* create an issue on http://bitbucket.org/hpk42/apipkg/issues
+* create an issue on https://github.com/pytest-dev/apipkg/issues
 
 have fun,
 holger krekel
diff --git a/py/_vendored_packages/apipkg-1.5.dist-info/RECORD b/py/_vendored_packages/apipkg-1.5.dist-info/RECORD
new file mode 100644
index 00000000..dcfe1597
--- /dev/null
+++ b/py/_vendored_packages/apipkg-1.5.dist-info/RECORD
@@ -0,0 +1,10 @@
+apipkg-1.5.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
+apipkg-1.5.dist-info/METADATA,sha256=tIG1DSBzSeqmSRpOKHSEBmT1eOPdK8xK01xAIADuks4,3800
+apipkg-1.5.dist-info/RECORD,,
+apipkg-1.5.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0
+apipkg-1.5.dist-info/WHEEL,sha256=gduuPyBvFJQSQ0zdyxF7k0zynDXbIbvg5ZBHoXum5uk,110
+apipkg-1.5.dist-info/top_level.txt,sha256=3TGS6nmN7kjxhUK4LpPCB3QkQI34QYGrT0ZQGWajoZ8,7
+apipkg/__init__.py,sha256=VogR4mDwYmeOdJnjGi-RoMB1qJnD6_puDYj_nRolzhM,6707
+apipkg/__pycache__/__init__.cpython-38.pyc,,
+apipkg/__pycache__/version.cpython-38.pyc,,
+apipkg/version.py,sha256=YN6DnKyEPqjDAauJuwJRG9vlKbWVLd9gAbH7mkQXXNo,114
diff --git a/py/_vendored_packages/apipkg-1.5.dist-info/REQUESTED b/py/_vendored_packages/apipkg-1.5.dist-info/REQUESTED
new file mode 100644
index 00000000..e69de29b
diff --git a/py/_vendored_packages/apipkg-1.4.dist-info/WHEEL b/py/_vendored_packages/apipkg-1.5.dist-info/WHEEL
similarity index 70%
rename from py/_vendored_packages/apipkg-1.4.dist-info/WHEEL
rename to py/_vendored_packages/apipkg-1.5.dist-info/WHEEL
index 9dff69d8..1316c41d 100644
--- a/py/_vendored_packages/apipkg-1.4.dist-info/WHEEL
+++ b/py/_vendored_packages/apipkg-1.5.dist-info/WHEEL
@@ -1,5 +1,5 @@
 Wheel-Version: 1.0
-Generator: bdist_wheel (0.24.0)
+Generator: bdist_wheel (0.31.1)
 Root-Is-Purelib: true
 Tag: py2-none-any
 Tag: py3-none-any
diff --git a/py/_vendored_packages/apipkg-1.4.dist-info/top_level.txt b/py/_vendored_packages/apipkg-1.5.dist-info/top_level.txt
similarity index 100%
rename from py/_vendored_packages/apipkg-1.4.dist-info/top_level.txt
rename to py/_vendored_packages/apipkg-1.5.dist-info/top_level.txt
diff --git a/py/_vendored_packages/apipkg.py b/py/_vendored_packages/apipkg/__init__.py
similarity index 90%
rename from py/_vendored_packages/apipkg.py
rename to py/_vendored_packages/apipkg/__init__.py
index 9d56e0bc..93180484 100644
--- a/py/_vendored_packages/apipkg.py
+++ b/py/_vendored_packages/apipkg/__init__.py
@@ -1,7 +1,7 @@
 """
-apipkg: control the exported namespace of a python package.
+apipkg: control the exported namespace of a Python package.
 
-see http://pypi.python.org/pypi/apipkg
+see https://pypi.python.org/pypi/apipkg
 
 (c) holger krekel, 2009 - MIT license
 """
@@ -9,8 +9,7 @@
 import sys
 from types import ModuleType
 
-
-__version__ = '1.4'
+from .version import version as __version__
 
 
 def _py_abspath(path):
@@ -37,8 +36,9 @@ def distribution_version(name):
         return dist.version
 
 
-def initpkg(pkgname, exportdefs, attr=dict(), eager=False):
+def initpkg(pkgname, exportdefs, attr=None, eager=False):
     """ initialize given package from the export definitions. """
+    attr = attr or {}
     oldmod = sys.modules.get(pkgname)
     d = {}
     f = getattr(oldmod, '__file__', None)
@@ -51,6 +51,8 @@ def initpkg(pkgname, exportdefs, attr=dict(), eager=False):
         d['__loader__'] = oldmod.__loader__
     if hasattr(oldmod, '__path__'):
         d['__path__'] = [_py_abspath(p) for p in oldmod.__path__]
+    if hasattr(oldmod, '__package__'):
+        d['__package__'] = oldmod.__package__
     if '__doc__' not in exportdefs and getattr(oldmod, '__doc__', None):
         d['__doc__'] = oldmod.__doc__
     d.update(attr)
@@ -60,12 +62,13 @@ def initpkg(pkgname, exportdefs, attr=dict(), eager=False):
     sys.modules[pkgname] = mod
     # eagerload in bypthon to avoid their monkeypatching breaking packages
     if 'bpython' in sys.modules or eager:
-        for module in sys.modules.values():
+        for module in list(sys.modules.values()):
             if isinstance(module, ApiModule):
                 module.__dict__
 
 
 def importobj(modpath, attrname):
+    """imports a module, then resolves the attrname on it"""
     module = __import__(modpath, None, None, ['__doc__'])
     if not attrname:
         return module
@@ -78,6 +81,7 @@ def importobj(modpath, attrname):
 
 
 class ApiModule(ModuleType):
+    """the magical lazy-loading module standing"""
     def __docget(self):
         try:
             return self.__doc
@@ -121,13 +125,13 @@ def __init__(self, name, importspec, implprefix=None, attr=None):
                     self.__map__[name] = (modpath, attrname)
 
     def __repr__(self):
-        l = []
+        repr_list = []
         if hasattr(self, '__version__'):
-            l.append("version=" + repr(self.__version__))
+            repr_list.append("version=" + repr(self.__version__))
         if hasattr(self, '__file__'):
-            l.append('from ' + repr(self.__file__))
-        if l:
-            return '<ApiModule %r %s>' % (self.__name__, " ".join(l))
+            repr_list.append('from ' + repr(self.__file__))
+        if repr_list:
+            return '<ApiModule %r %s>' % (self.__name__, " ".join(repr_list))
         return '<ApiModule %r>' % (self.__name__,)
 
     def __makeattr(self, name):
diff --git a/py/_vendored_packages/apipkg/version.py b/py/_vendored_packages/apipkg/version.py
new file mode 100644
index 00000000..c25fc7c9
--- /dev/null
+++ b/py/_vendored_packages/apipkg/version.py
@@ -0,0 +1,4 @@
+# coding: utf-8
+# file generated by setuptools_scm
+# don't change, don't track in version control
+version = '1.5'
diff --git a/py/_vendored_packages/iniconfig-1.0.0.dist-info/DESCRIPTION.rst b/py/_vendored_packages/iniconfig-1.0.0.dist-info/DESCRIPTION.rst
deleted file mode 100644
index 6d59bc22..00000000
--- a/py/_vendored_packages/iniconfig-1.0.0.dist-info/DESCRIPTION.rst
+++ /dev/null
@@ -1,53 +0,0 @@
-iniconfig: brain-dead simple parsing of ini files
-=======================================================
-
-iniconfig is a small and simple INI-file parser module
-having a unique set of features:
-
-* tested against Python2.4 across to Python3.2, Jython, PyPy
-* maintains order of sections and entries
-* supports multi-line values with or without line-continuations
-* supports "#" comments everywhere
-* raises errors with proper line-numbers
-* no bells and whistles like automatic substitutions
-* iniconfig raises an Error if two sections have the same name.
-
-If you encounter issues or have feature wishes please report them to:
-
-    http://github.org/RonnyPfannschmidt/iniconfig/issues
-
-Basic Example
-===================================
-
-If you have an ini file like this::
-
-    # content of example.ini
-    [section1] # comment
-    name1=value1  # comment
-    name1b=value1,value2  # comment
-
-    [section2]
-    name2=
-        line1
-        line2
-
-then you can do::
-
-    >>> import iniconfig
-    >>> ini = iniconfig.IniConfig("example.ini")
-    >>> ini['section1']['name1'] # raises KeyError if not exists
-    'value1'
-    >>> ini.get('section1', 'name1b', [], lambda x: x.split(","))
-    ['value1', 'value2']
-    >>> ini.get('section1', 'notexist', [], lambda x: x.split(","))
-    []
-    >>> [x.name for x in list(ini)]
-    ['section1', 'section2']
-    >>> list(list(ini)[0].items())
-    [('name1', 'value1'), ('name1b', 'value1,value2')]
-    >>> 'section1' in ini
-    True
-    >>> 'inexistendsection' in ini
-    False
-
-
diff --git a/py/_vendored_packages/iniconfig-1.0.0.dist-info/RECORD b/py/_vendored_packages/iniconfig-1.0.0.dist-info/RECORD
deleted file mode 100644
index ec2f5e17..00000000
--- a/py/_vendored_packages/iniconfig-1.0.0.dist-info/RECORD
+++ /dev/null
@@ -1,9 +0,0 @@
-iniconfig.py,sha256=-pBe5AF_6aAwo1CxJQ8i_zJq6ejc6IxHta7qk2tNJhY,5208
-iniconfig-1.0.0.dist-info/DESCRIPTION.rst,sha256=BDLMwWqfjpwZ5yqXRvz1x6bf8Dnt_pZhElekAwtL19o,1522
-iniconfig-1.0.0.dist-info/METADATA,sha256=bb2T8WUSDXXiUVxZ4WXhbffq6stikMTlB1jyrPbLfyU,2405
-iniconfig-1.0.0.dist-info/RECORD,,
-iniconfig-1.0.0.dist-info/WHEEL,sha256=3XK1Z4AI42GuJXciCpiHMOkbehxRV8QDBW8IU41k3ZU,96
-iniconfig-1.0.0.dist-info/metadata.json,sha256=UYYwW0p815nU4qz8Iq1gGqIYaAcsCyGju3jXvTOyXSI,950
-iniconfig-1.0.0.dist-info/top_level.txt,sha256=7KfM0fugdlToj9UW7enKXk2HYALQD8qHiyKtjhSzgN8,10
-iniconfig-1.0.0.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
-__pycache__/iniconfig.cpython-35.pyc,,
diff --git a/py/_vendored_packages/iniconfig-1.0.0.dist-info/WHEEL b/py/_vendored_packages/iniconfig-1.0.0.dist-info/WHEEL
deleted file mode 100644
index 15b96c99..00000000
--- a/py/_vendored_packages/iniconfig-1.0.0.dist-info/WHEEL
+++ /dev/null
@@ -1,5 +0,0 @@
-Wheel-Version: 1.0
-Generator: bdist_wheel (0.30.0.a0)
-Root-Is-Purelib: true
-Tag: cp35-none-any
-
diff --git a/py/_vendored_packages/iniconfig-1.0.0.dist-info/metadata.json b/py/_vendored_packages/iniconfig-1.0.0.dist-info/metadata.json
deleted file mode 100644
index 084daa6c..00000000
--- a/py/_vendored_packages/iniconfig-1.0.0.dist-info/metadata.json
+++ /dev/null
@@ -1 +0,0 @@
-{"classifiers": ["Development Status :: 4 - Beta", "Intended Audience :: Developers", "License :: OSI Approved :: MIT License", "Operating System :: POSIX", "Operating System :: Microsoft :: Windows", "Operating System :: MacOS :: MacOS X", "Topic :: Software Development :: Libraries", "Topic :: Utilities", "Programming Language :: Python", "Programming Language :: Python :: 2", "Programming Language :: Python :: 3"], "extensions": {"python.details": {"contacts": [{"email": "opensource@ronnypfannschmidt.de, holger.krekel@gmail.com", "name": "Ronny Pfannschmidt, Holger Krekel", "role": "author"}], "document_names": {"description": "DESCRIPTION.rst"}, "project_urls": {"Home": "http://github.com/RonnyPfannschmidt/iniconfig"}}}, "generator": "bdist_wheel (0.30.0.a0)", "license": "MIT License", "metadata_version": "2.0", "name": "iniconfig", "platform": "unix", "summary": "iniconfig: brain-dead simple config-ini parsing", "version": "1.0.0"}
\ No newline at end of file
diff --git a/py/_vendored_packages/iniconfig-1.0.0.dist-info/INSTALLER b/py/_vendored_packages/iniconfig-1.0.1.dist-info/INSTALLER
similarity index 100%
rename from py/_vendored_packages/iniconfig-1.0.0.dist-info/INSTALLER
rename to py/_vendored_packages/iniconfig-1.0.1.dist-info/INSTALLER
diff --git a/py/_vendored_packages/iniconfig-1.0.1.dist-info/LICENSE b/py/_vendored_packages/iniconfig-1.0.1.dist-info/LICENSE
new file mode 100644
index 00000000..31ecdfb1
--- /dev/null
+++ b/py/_vendored_packages/iniconfig-1.0.1.dist-info/LICENSE
@@ -0,0 +1,19 @@
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+     
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+ 
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+
diff --git a/py/_vendored_packages/iniconfig-1.0.0.dist-info/METADATA b/py/_vendored_packages/iniconfig-1.0.1.dist-info/METADATA
similarity index 96%
rename from py/_vendored_packages/iniconfig-1.0.0.dist-info/METADATA
rename to py/_vendored_packages/iniconfig-1.0.1.dist-info/METADATA
index 79ea62dc..87c0eb41 100644
--- a/py/_vendored_packages/iniconfig-1.0.0.dist-info/METADATA
+++ b/py/_vendored_packages/iniconfig-1.0.1.dist-info/METADATA
@@ -1,6 +1,6 @@
-Metadata-Version: 2.0
+Metadata-Version: 2.1
 Name: iniconfig
-Version: 1.0.0
+Version: 1.0.1
 Summary: iniconfig: brain-dead simple config-ini parsing
 Home-page: http://github.com/RonnyPfannschmidt/iniconfig
 Author: Ronny Pfannschmidt, Holger Krekel
@@ -39,7 +39,7 @@ having a unique set of features:
 
 If you encounter issues or have feature wishes please report them to:
 
-    http://github.org/RonnyPfannschmidt/iniconfig/issues
+    http://github.com/RonnyPfannschmidt/iniconfig/issues
 
 Basic Example
 ===================================
diff --git a/py/_vendored_packages/iniconfig-1.0.1.dist-info/RECORD b/py/_vendored_packages/iniconfig-1.0.1.dist-info/RECORD
new file mode 100644
index 00000000..b60c1a53
--- /dev/null
+++ b/py/_vendored_packages/iniconfig-1.0.1.dist-info/RECORD
@@ -0,0 +1,9 @@
+__pycache__/iniconfig.cpython-38.pyc,,
+iniconfig-1.0.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
+iniconfig-1.0.1.dist-info/LICENSE,sha256=KvaAw570k_uCgwNW0dPfGstaBgM8ui3sehniHKp3qGY,1061
+iniconfig-1.0.1.dist-info/METADATA,sha256=J-XULI2IH9oRN99MYKzadNBkzPKVE25GzwfkYIfDTAA,2405
+iniconfig-1.0.1.dist-info/RECORD,,
+iniconfig-1.0.1.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0
+iniconfig-1.0.1.dist-info/WHEEL,sha256=g4nMs7d-Xl9-xC9XovUrsDHGXt-FT0E17Yqo92DEfvY,92
+iniconfig-1.0.1.dist-info/top_level.txt,sha256=7KfM0fugdlToj9UW7enKXk2HYALQD8qHiyKtjhSzgN8,10
+iniconfig.py,sha256=-pBe5AF_6aAwo1CxJQ8i_zJq6ejc6IxHta7qk2tNJhY,5208
diff --git a/py/_vendored_packages/iniconfig-1.0.1.dist-info/REQUESTED b/py/_vendored_packages/iniconfig-1.0.1.dist-info/REQUESTED
new file mode 100644
index 00000000..e69de29b
diff --git a/py/_vendored_packages/iniconfig-1.0.1.dist-info/WHEEL b/py/_vendored_packages/iniconfig-1.0.1.dist-info/WHEEL
new file mode 100644
index 00000000..b552003f
--- /dev/null
+++ b/py/_vendored_packages/iniconfig-1.0.1.dist-info/WHEEL
@@ -0,0 +1,5 @@
+Wheel-Version: 1.0
+Generator: bdist_wheel (0.34.2)
+Root-Is-Purelib: true
+Tag: py3-none-any
+
diff --git a/py/_vendored_packages/iniconfig-1.0.0.dist-info/top_level.txt b/py/_vendored_packages/iniconfig-1.0.1.dist-info/top_level.txt
similarity index 100%
rename from py/_vendored_packages/iniconfig-1.0.0.dist-info/top_level.txt
rename to py/_vendored_packages/iniconfig-1.0.1.dist-info/top_level.txt
diff --git a/tasks/__init__.py b/tasks/__init__.py
index 5d74b649..e69de29b 100644
--- a/tasks/__init__.py
+++ b/tasks/__init__.py
@@ -1,12 +0,0 @@
-"""
-Invoke tasks to help with pytest development and release process.
-"""
-
-import invoke
-
-from . import vendoring
-
-
-ns = invoke.Collection(
-    vendoring
-)
diff --git a/tasks/vendoring.py b/tasks/vendoring.py
index fbc171bc..3c7d6015 100644
--- a/tasks/vendoring.py
+++ b/tasks/vendoring.py
@@ -1,23 +1,41 @@
 from __future__ import absolute_import, print_function
-import py
-import invoke
+import os.path
+import shutil
+import subprocess
+import sys
 
-VENDOR_TARGET = py.path.local("py/_vendored_packages")
-GOOD_FILES = 'README.md', '__init__.py'
+VENDOR_TARGET = "py/_vendored_packages"
+GOOD_FILES = ('README.md', '__init__.py')
 
-@invoke.task()
-def remove_libs(ctx):
+
+def remove_libs():
     print("removing vendored libs")
-    for path in VENDOR_TARGET.listdir():
-        if path.basename not in GOOD_FILES:
+    for filename in os.listdir(VENDOR_TARGET):
+        if filename not in GOOD_FILES:
+            path = os.path.join(VENDOR_TARGET, filename)
             print(" ", path)
-            path.remove()
+            if os.path.isfile(path):
+                os.remove(path)
+            else:
+                shutil.rmtree(path)
+
 
-@invoke.task(pre=[remove_libs])
-def update_libs(ctx):
+def update_libs():
     print("installing libs")
-    ctx.run("pip install -t {target} apipkg iniconfig".format(target=VENDOR_TARGET))
-    ctx.run("git add {target}".format(target=VENDOR_TARGET))
+    subprocess.check_call((
+        sys.executable, '-m', 'pip', 'install',
+        '--target', VENDOR_TARGET, 'apipkg', 'iniconfig',
+    ))
+    subprocess.check_call(('git', 'add', VENDOR_TARGET))
     print("Please commit to finish the update after running the tests:")
     print()
     print('    git commit -am "Updated vendored libs"')
+
+
+def main():
+    remove_libs()
+    update_libs()
+
+
+if __name__ == '__main__':
+    exit(main())