Auto fix unicode strings

pype/lib/applications.py

@@ -416,7 +416,7 @@ def _subprocess(*args, **kwargs):
     # not passed.
     env = kwargs.get("env") or os.environ
     # Make sure environment contains only strings
-    filtered_env = {k: str(v) for k, v in env.items()}
+    filtered_env = {str(k): str(v) for k, v in env.items()}
 
     # Use lib's logger if was not passed with kwargs.
     logger = kwargs.pop("logger", log)

pype/plugins/global/publish/repair_unicode_strings.py

@@ -0,0 +1,15 @@
+import os
+import pyblish.api
+
+
+class RepairUnicodeStrings(pyblish.api.Collector):
+    """Validate all environment variables are string type.
+
+    """
+
+    order = pyblish.api.CollectorOrder
+    label = 'Unicode Strings'
+
+    def process(self, context):
+        for key, value in os.environ.items():
+            os.environ[str(key)] = str(value)