fix(appearance): include XDG_DATA_HOME in icon theme search

app/src/pages/desktop/appearance.rs

@@ -3,11 +3,12 @@
 
 use std::borrow::Cow;
 use std::collections::BTreeSet;
-use std::path::Path;
+use std::path::{Path, PathBuf};
 use std::sync::Arc;
 
 use apply::Apply;
 use ashpd::desktop::file_chooser::{FileFilter, SelectedFiles};
+use cosmic::cctk::sctk::reexports::protocols::xdg;
 use cosmic::config::CosmicTk;
 use cosmic::cosmic_config::{Config, ConfigSet, CosmicConfigEntry};
 use cosmic::cosmic_theme::palette::{FromColor, Hsv, Srgb, Srgba};
@@ -1482,10 +1483,28 @@ async fn fetch_icon_themes() -> Message {
 
     let mut buffer = String::new();
 
-    if let Ok(data_dirs) = std::env::var("XDG_DATA_DIRS") {
+    let xdg_data_home = std::env::var("XDG_DATA_HOME")
-        for dir in data_dirs.split_terminator(':') {
+        .ok()
-            let icon_dir = Path::new(dir).join("icons");
+        .and_then(|value| {
+            if value.is_empty() {
+                None
+            } else {
+                Some(PathBuf::from(value))
+            }
+        })
+        .or_else(dirs::home_dir)
+        .map(|dir| dir.join(".local/share/icons"));
 
+    let xdg_data_dirs = std::env::var("XDG_DATA_DIRS");
+
+    let xdg_data_dirs = xdg_data_dirs
+        .as_ref()
+        .ok()
+        .into_iter()
+        .flat_map(|data_dirs| data_dirs.split_terminator(':'))
+        .map(|dir| Path::new(dir).join("icons"));
+
+    for icon_dir in xdg_data_dirs.chain(xdg_data_home) {
         let Ok(read_dir) = std::fs::read_dir(&icon_dir) else {
             continue;
         };
@@ -1532,7 +1551,6 @@ async fn fetch_icon_themes() -> Message {
             }
         }
     }
-    }
 
     Message::Entered(icon_themes.into_iter().collect())
 }