add unix socket ipc

src/cli/dpms.rs

@@ -1,13 +1,21 @@
 use {
     crate::{
         cli::{DpmsArgs, DpmsState, GlobalArgs},
+        ipc,
         tools::tool_client::{ToolClient, with_tool_client},
+        utils::errorfmt::ErrorFmt,
         wire::jay_compositor::SetDpms,
     },
     std::rc::Rc,
 };
 
 pub fn main(global: GlobalArgs, args: DpmsArgs) {
+    let active = args.state == DpmsState::On;
+    match ipc::request_unit(&ipc::Request::DpmsSet { active }) {
+        Ok(()) => return,
+        Err(e) if e.can_fallback() => {}
+        Err(e) => fatal!("Could not set DPMS state over IPC: {}", ErrorFmt(e)),
+    }
     with_tool_client(global.log_level, |tc| async move {
         run(tc, args).await;
     });