Description: python3-mistune is a dependency for this package. It reached 2.0.0 release and is no longer backward compatible with 0.8.4. We need to switch -hopefully temporarily- to mistune0 that contains mistune 0.8.4 release.
Author: Marcos Fouces <marcos@debian.org>
Bug-Debian: https://bugs.debian.org/1003568
Forwarded: not-needed 

--- a/flasgger.egg-info/requires.txt
+++ b/flasgger.egg-info/requires.txt
@@ -1,5 +1,5 @@
 Flask>=0.10
 PyYAML>=3.0
 jsonschema>=3.0.1
-mistune
+mistune0
 six>=1.10.0
--- a/flasgger/base.py
+++ b/flasgger/base.py
@@ -31,7 +31,7 @@
 except ImportError:
     RequestParser = None
 import jsonschema
-from mistune import markdown
+from mistune0 import markdown
 from .constants import OPTIONAL_FIELDS, OPTIONAL_OAS3_FIELDS
 from .utils import extract_definitions
 from .utils import get_specs
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,7 @@
         'Flask>=0.10',
         'PyYAML>=3.0',
         'jsonschema>=3.0.1',
-        'mistune',
+        'mistune0',
         'six>=1.10.0'
     ],
     classifiers=[