nixpkgs/nixos/modules/programs/fish_completion-generator.patch

--- a/create_manpage_completions.py
+++ b/create_manpage_completions.py
@@ -879,10 +879,6 @@ def parse_manpage_at_path(manpage_path, output_directory):
                 )
                 return False
 
-        # Output the magic word Autogenerated so we can tell if we can overwrite this
-        built_command_output.insert(
-            0, "# " + CMDNAME + "\n# Autogenerated from man page " + manpage_path
-        )
         # built_command_output.insert(2, "# using " + parser.__class__.__name__) # XXX MISATTRIBUTES THE CULPABLE PARSER! Was really using Type2 but reporting TypeDeroffManParser
 
         for line in built_command_output: