fix: choose chafa if ueberzugpp does not exist

yazi-adapter/src/adapter.rs

@@ -1,4 +1,4 @@
-use std::{env, fmt::Display, path::Path, sync::Arc};
+use std::{env, fmt::Display, fs, path::Path, sync::Arc};
 
 use anyhow::Result;
 use ratatui::layout::Rect;
@@ -95,6 +95,25 @@ impl Adapter {
 			return *p;
 		}
 
+		#[cfg(windows)]
+		let ueberzugpp_exists = false;
+		#[cfg(unix)]
+		let ueberzugpp_exists = {
+			let paths = env::var_os("PATH").unwrap_or_default();
+			let mut found = false;
+
+			for path in env::split_paths(&paths) {
+				let full_path = path.join("ueberzugpp");
+				if fs::metadata(&full_path).map(|m| m.is_file()).unwrap_or(false) {
+					found = true;
+					break;
+				}
+			}
+
+			found
+		};
+
+		if ueberzugpp_exists {
 			match env::var("XDG_SESSION_TYPE").unwrap_or_default().as_str() {
 				"x11" => return Self::X11,
 				"wayland" => return Self::Wayland,
@@ -106,6 +125,10 @@ impl Adapter {
 			if env_exists("DISPLAY") {
 				return Self::X11;
 			}
+		} else {
+			#[cfg(unix)]
+			warn!("[Adapter] Could not find ueberzugpp");
+		}
 		if std::fs::symlink_metadata("/proc/sys/fs/binfmt_misc/WSLInterop").is_ok() {
 			return Self::KittyOld;
 		}