Fixed issues with importlib-metadata and flake8

Details:

* Fixed a flake8 AttributeError when using importlib-metadata 5.0.0 on
  Python >=3.7, by pinning importlib-metadata to <5.0.0 on these Python versions.

* Added minimum version of importlib-metadata==1.1.0 on Python >=3.8.

Signed-off-by: Andreas Maier <[email protected]>

Author: andy-maier

dev-requirements.txt

@@ -23,6 +23,10 @@ pluggy>=0.13.0
 # colorama 0.4.0 removed support for Python 3.4
 colorama>=0.3.9,<0.4.0; python_version <= '3.4'
 colorama>=0.4.0; python_version >= '3.5'
+# flake8 fails with AttributeError in importlib-metadata 5.0.0 on Python >=3.7
+# tox 3.14 requires importlib-metadata<1,>=0.12 on Python <=3.7
+importlib-metadata>=0.22,<5.0.0; python_version <= '3.7'
+importlib-metadata>=1.1.0; python_version >= '3.8'
 
 # more-itertools version 8.11 requires python 3.6, See issue #2796
 more-itertools>=4.0.0,!=8.11.0; python_version < '3.6'

docs/changes.rst

@@ -30,6 +30,9 @@ Released: not yet
 * Fixed issue that causes failure of tests with pwbem 1.5.0 because of
   CIMInstanceName host attribute.  (see issue #1203)
 
+* Fixed a flake8 AttributeError when using importlib-metadata 5.0.0 on
+  Python>=3.7, by pinning importlib-metadata to <5.0.0 on these Python versions.
+
 **Enhancements:**
 
 **Cleanup:**

minimum-constraints.txt

@@ -162,6 +162,8 @@ pluggy==0.13.0
 funcsigs==1.0.2; python_version == '2.7'
 colorama==0.3.9; python_version <= '3.4'
 colorama==0.4.0; python_version >= '3.5'
+importlib-metadata==0.22; python_version <= '3.7'
+importlib-metadata==1.1.0; python_version >= '3.8'
 
 # Coverage reporting (no imports, invoked via coveralls script):
 # We exclude Python 3.4 from coverage testing and reporting.
@@ -180,8 +182,6 @@ dparse==0.5.2; python_version >= '3.5'
 # Tox
 tox==2.5.0
 # tox 3.17 requires six>=1.14.0
-# tox 3.14 requires importlib-metadata<1,>=0.12 on py<3.8
-importlib-metadata==0.12; python_version <= '3.7'
 
 # Sphinx (no imports, invoked via sphinx-build script):
 Sphinx==1.7.6; python_version <= '3.4'
@@ -286,7 +286,6 @@ gitdb2==2.0.0
 html5lib==0.999999999
 idna==2.5
 imagesize==0.7.1
-importlib-metadata==0.12
 isort==4.3.5
 Jinja2==2.8.1; python_version <= '3.9'
 Jinja2==2.10.2; python_version >= '3.10'