use std::cell::RefCell;
use std::collections::{HashMap, HashSet};
use std::fmt::Write;
use std::path::Path;
use std::rc::Rc;
use std::sync::{Arc, Mutex};
use std::time::Duration;
use std::{io, mem};
use anyhow::{anyhow, Context};
use libc::dev_t;
use niri_config::Config;
use smithay::backend::allocator::dmabuf::{Dmabuf, DmabufAllocator};
use smithay::backend::allocator::gbm::{GbmAllocator, GbmBufferFlags, GbmDevice};
use smithay::backend::allocator::{Format, Fourcc};
use smithay::backend::drm::compositor::{DrmCompositor, PrimaryPlaneElement};
use smithay::backend::drm::{
DrmDevice, DrmDeviceFd, DrmEvent, DrmEventMetadata, DrmEventTime, DrmNode, NodeType,
};
use smithay::backend::egl::context::ContextPriority;
use smithay::backend::egl::{EGLContext, EGLDevice, EGLDisplay};
use smithay::backend::libinput::{LibinputInputBackend, LibinputSessionInterface};
use smithay::backend::renderer::gles::{Capability, GlesRenderer, GlesTexture};
use smithay::backend::renderer::multigpu::gbm::GbmGlesBackend;
use smithay::backend::renderer::multigpu::{GpuManager, MultiFrame, MultiRenderer};
use smithay::backend::renderer::{DebugFlags, ImportDma, ImportEgl, Renderer};
use smithay::backend::session::libseat::LibSeatSession;
use smithay::backend::session::{Event 