Some values from the CSV file should be chomp()ed
Cannot install media Entretien avec Serge Haroche, prix Nobel de physique 2012 from package introduction-chimie-physique-fr-adultes : Some values are not valid : - lang: * Select a valid choice. fr is not one of the available choices.
It may not be obvious, but the lang here is three characters, "fr "
(with a trailing space).
These values should see their leading/trailing spaces trimmed out.