I have a village in a desert. I took all the villagers out and rode them to my base via a rail system so their village is deserted. The buildings are in one piece each with a wooden door.
I then updated to 1.2 and now no villagers are spawning. I remember reading somewhere that villagers will spawn if they have a "house" to spawn in. I've read the conditions on the wiki and the village houses meet that criteria but no villagers are spawning.
What needs to be done? Do I need to return the villagers and let them "breed"? Do villagers only spawn if they have houses AND other villagers around?