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launcher: scan desktop files directly, keep state in XDG_STATE_HOME

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The desktop-entry cache lived in $XDG_CACHE_HOME/wldash/desktop.json.
On an NFS-shared home that is a remote read and write on every start
(unless the session happens to export a machine-local XDG_CACHE_HOME),
and it went stale whenever a package was installed until someone ran
--desktop-refresh. Scanning the applications directories takes a few
milliseconds over local /usr/share and already happened on a background
thread, so the cache bought nothing: drop it, along with simd-json and
the serde derives on Desktop. --desktop-refresh stays as a no-op so old
key bindings keep working.

Calculator history and the prompt saved on Escape are state, not cache:
they move to $XDG_STATE_HOME/wldash (~/.local/state), written only on
Enter/Escape, and the old cache location is still read as a fallback.

With the serde derives gone, two Desktop fields were unused; use them:
Type=Link entries now open their URL with xdg-open, and Terminal=true
entries run under $TERMINAL -e when it is set.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
Bendik Aagaard Lynghaug
2026-10-03 09:33:12 +00:00
co-authored by Claude Fable 5.1
parent 03a3c681b0
commit 9953865128
8 changed files with 82 additions and 272 deletions
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src/main.rs
+4 -11
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@@ -23,10 +23,7 @@ use event::{Event, Events};
use fonts::{FontMap, MaybeFontMap};
use keyboard::{KeyRepeatSource, RepeatMessage};
use state::State;
use utils::{
desktop::{load_desktop_files, write_desktop_cache},
xdg,
};
use utils::xdg;
use widgets::{Geometry, Widget};
use std::{
@@ -50,7 +47,8 @@ OPTIONS:
else ~/.config/wldash/config.yml)
--write-default-config [v1|v2|toplevel] generate and write a new config file
(v2 by default)
--desktop-refresh refresh desktop file cache
--desktop-refresh no-op kept for old key bindings
(desktop files are scanned at start)
"
);
}
@@ -68,9 +66,7 @@ fn ensure_dir_exists(path: &str) {
fn create_required_directories() {
let dir_config_wldash = format!("{}/wldash", xdg::config_folder());
let dir_cache_wldash = format!("{}/wldash", xdg::cache_folder());
ensure_dir_exists(&dir_config_wldash);
ensure_dir_exists(&dir_cache_wldash);
}
/// Default config path. On a shared (e.g. NFS-roamed) home, a host-specific
@@ -119,10 +115,7 @@ fn main() {
std::process::exit(0);
}
Some(ref s) if s == "--desktop-refresh" => {
let v = load_desktop_files();
if let Err(e) = write_desktop_cache(&v) {
die(format!("could not write desktop cache: {}", e));
}
eprintln!("wldash: desktop files are scanned at every start; nothing to refresh");
std::process::exit(0);
}
Some(ref s) if s == "--help" => {