Expose system module through feature flag

Cargo.toml

@@ -42,6 +42,8 @@ smol = ["iced_futures/smol"]
 palette = ["iced_core/palette"]
 # Enables pure, virtual widgets in the `pure` module
 pure = ["iced_pure", "iced_graphics/pure"]
+# Enables querying system information
+system = ["iced_winit/system"]
 
 [badges]
 maintenance = { status = "actively-developed" }

examples/system_information/Cargo.toml

@@ -6,5 +6,5 @@ edition = "2021"
 publish = false
 
 [dependencies]
-iced = { path = "../.." }
+iced = { path = "../..", features = ["system"] }
-bytesize = { version = "1.1.0" }
+bytesize = { version = "1.1.0" }

glutin/Cargo.toml

@@ -12,6 +12,7 @@ categories = ["gui"]
 
 [features]
 debug = ["iced_winit/debug"]
+system = ["iced_winit/system"]
 
 [dependencies.log]
 version = "0.4"

glutin/src/lib.rs

@@ -22,7 +22,6 @@ pub mod application;
 pub use iced_winit::clipboard;
 pub use iced_winit::conversion;
 pub use iced_winit::settings;
-pub use iced_winit::system;
 pub use iced_winit::window;
 pub use iced_winit::{Error, Mode};
 
@@ -32,3 +31,6 @@ pub use application::Application;
 pub use clipboard::Clipboard;
 #[doc(no_inline)]
 pub use settings::Settings;
+
+#[cfg(feature = "system")]
+pub use iced_winit::system;

src/lib.rs

@@ -224,8 +224,10 @@ pub use settings::Settings;
 
 pub use runtime::alignment;
 pub use runtime::futures;
-pub use runtime::system;
 pub use runtime::{
     Alignment, Background, Color, Command, ContentFit, Font, Length, Point,
     Rectangle, Size, Subscription, Vector,
 };
+
+#[cfg(feature = "system")]
+pub use runtime::system;

winit/Cargo.toml

@@ -12,12 +12,12 @@ categories = ["gui"]
 
 [features]
 debug = ["iced_native/debug"]
+system = ["sysinfo"]
 
 [dependencies]
 window_clipboard = "0.2"
 log = "0.4"
 thiserror = "1.0"
-sysinfo = "0.23"
 
 [dependencies.winit]
 version = "0.26"
@@ -42,3 +42,7 @@ version = "0.3.6"
 [target.'cfg(target_arch = "wasm32")'.dependencies.web-sys]
 version = "0.3"
 features = ["Document", "Window"]
+
+[dependencies.sysinfo]
+version = "0.23"
+optional = true

winit/src/application.rs

@@ -542,7 +542,7 @@ pub fn run_command<Message: 'static + std::fmt::Debug + Send, E: Executor>(
     clipboard: &mut Clipboard,
     proxy: &mut winit::event_loop::EventLoopProxy<Message>,
     window: &winit::window::Window,
-    graphics_info: impl FnOnce() -> compositor::Information + Copy,
+    _graphics_info: impl FnOnce() -> compositor::Information + Copy,
 ) {
     use iced_native::command;
     use iced_native::system;
@@ -580,15 +580,18 @@ pub fn run_command<Message: 'static + std::fmt::Debug + Send, E: Executor>(
                 }
             },
             command::Action::System(action) => match action {
-                system::Action::QueryInformation(tag) => {
+                system::Action::QueryInformation(_tag) => {
-                    let information =
+                    #[cfg(feature = "sysinfo")]
-                        crate::system::information(graphics_info());
+                    {
+                        let information =
+                            crate::system::information(_graphics_info());
 
-                    let message = tag(information);
+                        let message = _tag(information);
 
-                    proxy
+                        proxy
-                        .send_event(message)
+                            .send_event(message)
-                        .expect("Send message to event loop");
+                            .expect("Send message to event loop");
+                    }
                 }
             },
         }

winit/src/lib.rs

@@ -31,9 +31,11 @@ pub mod application;
 pub mod clipboard;
 pub mod conversion;
 pub mod settings;
-pub mod system;
 pub mod window;
 
+#[cfg(feature = "system")]
+pub mod system;
+
 mod error;
 mod mode;
 mod position;