fix: remove references, dependency for six package

pyproject.toml

@@ -26,7 +26,6 @@ dependencies = [
         "fabric2",
         "invoke",
         "rattail",
-        "six",
 ]
 
 

rattail_fabric2/util.py

@@ -111,8 +111,6 @@ def append(c, filename, text, use_sudo=False, partial=False, escape=True,
     """
     func = use_sudo and c.sudo or c.run
     # Normalize non-list input to be a list
-    # TODO: do we need to check for six.something here?
-    # if isinstance(text, basestring):
     if isinstance(text, str):
         text = [text]
     for line in text: