Don't build with rfd on Linux

pot-browser/Cargo.toml

@@ -20,12 +20,14 @@ egui-toast.workspace = true
 chrono.workspace = true
 lru = "0.10.0"
 pulldown-cmark = "0.9.2"
-rfd = "0.11.3"
 dirs = "5.0.1"
 crossbeam-channel.workspace = true
 strum.workspace = true
 swell-ui.workspace = true
 bytesize.workspace = true
 
+[target.'cfg(target_os = "macos")'.dependencies]
+rfd = "0.11.3"
+
 [target.'cfg(any(all(target_os = "windows", target_arch = "x86_64"), target_os = "macos"))'.dependencies]
 opener = { version = "0.6.1", features = ["reveal"] }

pot-browser/src/pot_browser_panel.rs

@@ -1970,15 +1970,17 @@ fn add_filter_panels<I: PotBrowserIntegration>(
  ui.close_menu();
  let folder = {
  // On macOS, the blocking file dialog works nicely.
- #[cfg(target_family = "unix")]
+ #[cfg(target_os = "macos")]
  {
  rfd::FileDialog::new().pick_folder()
  }
  // On Windows, we run into the borrow_mut error because of RefCells combined
  // with reentrancy in baseview. Tried async dialog as well with main thread
  // dispatcher but that closes Pot Browser after choosing file. So we fall back to
  // manual entry of project path.
- #[cfg(target_family = "windows")]
+ // On some Linux distributions (especially those used in cross 2.5) we don't
+ // have an up-to-date glib but rfd uses glib-sys and this one needs a new glib.
+ #[cfg(any(target_os = "windows", target_os = "linux"))]
  {
  Some(dirs::document_dir().unwrap_or_else(|| Reaper::get().resource_path()))
  }