do not duplicate label when creating new parameter cell

Author: cscheid

src/resources/jupyter/notebook.py

@@ -13,6 +13,7 @@
 from pathlib import Path
 
 from yaml import safe_load as parse_string
+from yaml import safe_dump
 
 from log import trace
 import nbformat
@@ -641,6 +642,20 @@ def nb_parameterize(nb, params):
 
    # prepend options
    if len(params_cell_yaml):
+      # https://github.com/quarto-dev/quarto-cli/issues/10097
+      # We need to find and drop `label: ` from the yaml options
+      # to avoid label duplication
+      # The only way to do this robustly is to parse the yaml
+      # and then re-encode it
+      try:
+         params_cell_yaml = parse_string("\n".join(params_cell_yaml))
+         del params_cell_yaml['label']
+         params_cell_yaml = safe_dump(params_cell_yaml).strip().splitlines()
+      except Exception as e:
+         sys.stderr.write("\nWARNING: Invalid YAML option format in cell:\n" + "\n".join(params_cell_yaml) + "\n")
+         sys.stderr.flush()
+         params_cell_yaml = []
+      
       comment_chars = nb_language_comment_chars(language)
       option_prefix = comment_chars[0] + "| "
       option_suffix = comment_chars[1] if len(comment_chars) > 1 else None