Unfortunately we can’t go in and change files, but you can simply add this function:
add_filter( 'generate_typography_customize_list', 'tu_add_google_fonts' );
function tu_add_google_fonts( $fonts ) {
$fonts[ 'nunito_sans' ] = array(
'name' => 'Nunito Sans',
'variants' => array( '300', '400', '600', '700' ),
'category' => 'sans-serif'
);
return $fonts;
}
You can paste that into one of the methods listed here: https://docs.generatepress.com/article/adding-php/
Let me know if that does the trick or not ๐