Landmark North End dessert purveyor Mike’s Pastry will open at Somerville’s Assembly Row in 2017. This is the third location for the shop, with an original branch on Hanover Street and a newer outpost in Harvard Square. “Everything will be the same as North End and Harvard Square!” they write on Facebook. Which means, of course, long lines and plenty of cannoli. The Boston original opened in 1946. Mike’s joins fellow North End export Ernesto’s Pizza, which also has Assembly Row digs.