His firm is behind iconic Halifax buildings like Queen's Marque and NSCAD's Port Campus. Lines so crisp they paper cut the sky, colours so in tune with their surroundings they feel lifted from nature, banks of windows flooded with light: Chances are, you know a building designed by MacKay-Lyons Sweetapple when you see it—if for no other reason than the strong visual style has become a stalwart of east coast architecture. It feels unsurprising, then, to say that yesterday Brian MacKay-Lyons was appointed to the Order of Canada—even if he’s only the 40th architect in the country to be bestowed the honour…