fix(cli): only print the citation if the flag is set

src/__main__.py

@@ -36,6 +36,7 @@ def common_options(func):
     is_flag=True,
     callback=print_citation,
     expose_value=False,
+    is_eager=True,
     help="Print the citation in bibtex format and exit.",
 )
 def cli():

src/util.py

@@ -25,6 +25,8 @@ def get_version():
 
 
 def print_citation(context, param, value):
+    if not value or context.resilient_parsing:
+        return
     citation = create_citation(nek_base("CITATION.cff"), None)
     # click.echo(citation._implementation.cffobj['message'])
     validate_or_write_output(None, "bibtex", False, citation)