Executable haskell-mustache exits with success (status code 0) even if it reports an error.

[kindaro]

see for yourself

% if haskell-mustache nonsense.template imaginary.yaml; then echo "success"; else echo "failure"; fi
"nonsense.template" (line 1, column 1):
Template file 'nonsense.template' not found
success

what happens

The example above prints success. Overall, there is no way to programmatically detect that there was an error.

what should happen

The example above should print failure.