first drawing to the screen

src/main.zig

@@ -1,8 +1,34 @@
 const std = @import("std");
+const wlr = @import("wlroots");
 
 const Server = @import("server.zig").Server;
 
+const gpa = std.heap.c_allocator;
+
 pub fn main() !void {
+  wlr.log.init(.debug, null);
   std.debug.print("Starting mezzaluna", .{});
-  _ = try Server.init();
+
+  var server: Server = undefined;
+  try server.init();
+
+  var buf: [11]u8 = undefined;
+  const socket = try server.wl_server.addSocketAuto(&buf);
+
+  if (std.os.argv.len >= 2) {
+    const cmd = std.mem.span(std.os.argv[1]);
+    var child = std.process.Child.init(&[_][]const u8{ "/bin/sh", "-c", cmd }, gpa);
+    var env_map = try std.process.getEnvMap(gpa);
+    defer env_map.deinit();
+    try env_map.put("WAYLAND_DISPLAY", socket);
+    child.env_map = &env_map;
+    try child.spawn();
+  }
+
+  server.backend.start() catch |err| {
+    std.debug.panic("Failed to start backend: {}", .{err});
+    return;
+  };
+
+  server.wl_server.run();
 }