udpate setup.py to workaround issue in setuptools0.16.11

https://github.com/pypa/setuptools/issues/2355#issuecomment-685159580

7 files changed, 19 insertions, 14 deletions

diff --git a/CHANGES b/CHANGES
index a70a8ef..04afa52 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+[0, 16, 11]: 2020-09-03
+  - workaround issue with setuptools 0.50 and importing pip ( fix by jaraco
+    https://github.com/pypa/setuptools/issues/2355#issuecomment-685159580 )
+
 [0, 16, 10]: 2020-02-12
   - (auto) updated image references in README to sourceforge
 
diff --git a/README.rst b/README.rst
index 2a99cb9..0ff1188 100644
--- a/README.rst
+++ b/README.rst
@@ -4,8 +4,8 @@ ruamel.yaml
 
 ``ruamel.yaml`` is a YAML 1.2 loader/dumper package for Python.
 
-:version:       0.16.10
-:updated:       2020-02-12
+:version:       0.16.11
+:updated:       2020-09-03
 :documentation: http://yaml.readthedocs.io
 :repository:    https://bitbucket.org/ruamel/yaml
 :pypi:          https://pypi.org/project/ruamel.yaml/
@@ -54,6 +54,10 @@ ChangeLog
 
 .. should insert NEXT: at the beginning of line for next key (with empty line)
 
+0.16.11 (2020-09-03):
+  - workaround issue with setuptools 0.50 and importing pip ( fix by jaraco
+    https://github.com/pypa/setuptools/issues/2355#issuecomment-685159580 )
+
 0.16.10 (2020-02-12):
   - (auto) updated image references in README to sourceforge
 
diff --git a/__init__.py b/__init__.py
index 7bc157b..7cb014b 100644
--- a/__init__.py
+++ b/__init__.py
@@ -7,8 +7,8 @@ if False:  # MYPY
 
 _package_data = dict(
     full_package_name='ruamel.yaml',
-    version_info=(0, 16, 10),
-    __version__='0.16.10',
+    version_info=(0, 16, 11),
+    __version__='0.16.11',
     author='Anthon van der Neut',
     author_email='a.van.der.neut@ruamel.eu',
     description='ruamel.yaml is a YAML parser/emitter that supports roundtrip preservation of comments, seq/map flow style, and map key order',  # NOQA
diff --git a/_doc/_static/pypi.svg b/_doc/_static/pypi.svg
index 15d64e3..1bb63c1 100644
--- a/_doc/_static/pypi.svg
+++ b/_doc/_static/pypi.svg
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="86" height="20"><linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="a"><rect width="86" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#a)"><path fill="#555" d="M0 0h33v20H0z"/><path fill="#007ec6" d="M33 0h53v20H33z"/><path fill="url(#b)" d="M0 0h86v20H0z"/></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"> <text x="175" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="230">pypi</text><text x="175" y="140" transform="scale(.1)" textLength="230">pypi</text><text x="585" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="430">0.16.10</text><text x="585" y="140" transform="scale(.1)" textLength="430">0.16.10</text></g> </svg>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="86" height="20"><linearGradient id="b" x2="0" y2="100%"><stop offset="0" stop-color="#bbb" stop-opacity=".1"/><stop offset="1" stop-opacity=".1"/></linearGradient><clipPath id="a"><rect width="86" height="20" rx="3" fill="#fff"/></clipPath><g clip-path="url(#a)"><path fill="#555" d="M0 0h33v20H0z"/><path fill="#007ec6" d="M33 0h53v20H33z"/><path fill="url(#b)" d="M0 0h86v20H0z"/></g><g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,Geneva,sans-serif" font-size="110"> <text x="175" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="230">pypi</text><text x="175" y="140" transform="scale(.1)" textLength="230">pypi</text><text x="585" y="150" fill="#010101" fill-opacity=".3" transform="scale(.1)" textLength="430">0.16.11</text><text x="585" y="140" transform="scale(.1)" textLength="430">0.16.11</text></g> </svg>
diff --git a/anchor.py b/anchor.py
index aa649f5..d702126 100644
--- a/anchor.py
+++ b/anchor.py
@@ -1,4 +1,3 @@
-
 if False:  # MYPY
     from typing import Any, Dict, Optional, List, Union, Optional, Iterator  # NOQA
 
diff --git a/emitter.py b/emitter.py
index 41dc3e8..99e8abe 100644
--- a/emitter.py
+++ b/emitter.py
@@ -169,14 +169,14 @@ class Emitter(object):
         self.prefixed_colon = self.colon if prefix_colon is None else prefix_colon + self.colon
         # single entry mappings in flow sequence
         self.brace_single_entry_mapping_in_flow_sequence = (
-         brace_single_entry_mapping_in_flow_sequence
-        )  # NOQA
+            brace_single_entry_mapping_in_flow_sequence  # NOQA
+        )
 
         # Formatting details.
         self.canonical = canonical
         self.allow_unicode = allow_unicode
         # set to False to get "\Uxxxxxxxx" for non-basic unicode like emojis
-        self.unicode_supplementary = sys.maxunicode > 0xffff
+        self.unicode_supplementary = sys.maxunicode > 0xFFFF
         self.sequence_dash_offset = block_seq_indent if block_seq_indent else 0
         self.top_level_colon_align = top_level_colon_align
         self.best_sequence_indent = 2
diff --git a/setup.py b/setup.py
index f22dceb..40aba3a 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 # # header
 # coding: utf-8
-# dd: 20200125
+# dd: 20200903
 
 from __future__ import print_function, absolute_import, division, unicode_literals
 
@@ -446,10 +446,8 @@ class NameSpacePackager(object):
             sys.exit(1)
 
     def check(self):
-        try:
-            from pip.exceptions import InstallationError
-        except ImportError:
-            return
+        # https://github.com/pypa/setuptools/issues/2355#issuecomment-685159580
+        InstallationError = Exception
         # arg is either develop (pip install -e) or install
         if self.command not in ['install', 'develop']:
             return