fix(wallpapers): iterate XDG_DATA_DIRS when loading backgrounds

cosmic-settings/src/pages/desktop/wallpaper/config.rs

@@ -5,6 +5,7 @@ use cosmic::cosmic_config::{self, ConfigGet, ConfigSet};
 use cosmic_bg_config::Source;
 use cosmic_settings_wallpaper as wallpaper;
 use std::collections::VecDeque;
+use std::env;
 use std::io::Read;
 use std::path::{Path, PathBuf};
 
@@ -14,6 +15,7 @@ const CURRENT_FOLDER: &str = "current-folder";
 const CUSTOM_COLORS: &str = "custom-colors";
 const CUSTOM_IMAGES: &str = "custom-images";
 const RECENT_FOLDERS: &str = "recent-folders";
+const BACKGROUNDS_DIR: &'static str = "backgrounds";
 
 #[derive(Debug, Default)]
 pub struct Config {
@@ -100,37 +102,27 @@ impl Config {
     }
 
     #[must_use]
-    pub fn current_folder(&self) -> &Path {
+    pub fn current_folder(&self) -> PathBuf {
         self.current_folder
-            .as_deref()
+            .clone()
             .unwrap_or(Self::default_folder())
     }
 
     #[must_use]
-    pub fn default_folder() -> &'static Path {
+    pub fn default_folder() -> PathBuf {
-        let is_nixos_like: bool = match std::fs::File::open("/etc/os-release") {
+        if let Some(data_dirs) = env::var_os("XDG_DATA_DIRS") {
-            Ok(mut file) => {
+            if let Some(data_dirs) = data_dirs.to_str() {
-                let mut os_release_contents = String::new();
+                let data_dirs = data_dirs.split(":");
-                let _ = file.read_to_string(&mut os_release_contents);
 
-                // While only want to match for distributions that are either
+                for data_dir in data_dirs {
-                // NixOS or are based on NixOS.
+                    let potential_path = PathBuf::from(data_dir).join(BACKGROUNDS_DIR);
-                if os_release_contents.contains("ID=nixos")
+                    if let Ok(true) = &potential_path.try_exists() {
-                    || os_release_contents.contains("ID_LIKE=nixos")
+                        return potential_path;
-                {
+                    }
-                    true
-                } else {
-                    false
                 }
             }
-            Err(_) => false,
-        };
-
-        if is_nixos_like {
-            Path::new("/run/current-system/sw/share/backgrounds/")
-        } else {
-            Path::new("/usr/share/backgrounds/")
         }
+        PathBuf::from("/usr/share").join(BACKGROUNDS_DIR)
     }
 
     /// Sets the current background folder

cosmic-settings/src/pages/desktop/wallpaper/mod.rs

@@ -220,7 +220,7 @@ impl page::Page<crate::pages::Message> for Page {
             return Task::none();
         }
 
-        let current_folder = self.config.current_folder().to_owned();
+        let current_folder = self.config.current_folder();
 
         let (task, on_enter_handle) = Task::future(async move {
             let (service_config, displays) = wallpaper::config().await;
@@ -490,9 +490,7 @@ impl Page {
 
         let entry = match self.selection.active {
             Choice::Slideshow => {
-                match self
+                match self.config_wallpaper_entry(output, self.config.current_folder()) {
-                    .config_wallpaper_entry(output, self.config.current_folder().to_path_buf())
-                {
                     Some(entry) => entry,
                     None => return,
                 }
@@ -588,7 +586,7 @@ impl Page {
                 if self.config.current_folder.is_some() {
                     let _ = self.config.set_current_folder(None);
                     task = cosmic::task::future(async move {
-                        let folder = change_folder(Config::default_folder().to_owned()).await;
+                        let folder = change_folder(Config::default_folder()).await;
                         Message::ChangeFolder(folder)
                     });
                 } else {
@@ -968,7 +966,7 @@ impl Page {
                 if let Choice::Wallpaper(_) | Choice::Slideshow = self.selection.active {
                     let folder = self.config.current_folder();
                     for (id, recent) in self.config.recent_folders().iter().enumerate() {
-                        if recent == folder {
+                        if &folder == recent {
                             self.categories.selected = Some(Category::RecentFolder(id));
                         }
                     }

cosmic-settings/src/pages/input/keyboard/shortcuts/common.rs

@@ -11,8 +11,8 @@ use cosmic_settings_page as page;
 use slab::Slab;
 use slotmap::Key;
 use std::borrow::Cow;
-use std::{io, mem};
 use std::str::FromStr;
+use std::{io, mem};
 
 #[derive(Clone, Debug)]
 pub enum ShortcutMessage {