I found a way to simplify the example with fonts:
$font_config: (
font-style: normal,
font-variant: normal,
font-weight: normal,
font-measurements: 100%/1.5,
font-family: #{'Proxima Nova', 'Helvetica', 'Arial', sans-serif}
);
Simply by interpolating the list of font families, you cast it as a string thus circumventing the zip
issue you would face when dealing with a list. No need for an extra map, a double-quote hack or the unquote
function. Easy peasy.
Edit: Sass Guidelines recommend always quoting string, even if they don’t include spaces.