diff --git a/crates/eww/src/app.rs b/crates/eww/src/app.rs
index 1f2c937..48a2586 100644
--- a/crates/eww/src/app.rs
+++ b/crates/eww/src/app.rs
@@ -269,7 +269,7 @@ impl App {
     /// Thus, when a variable changes, the run-while conditions of all variables
     /// that mention the changed variable need to be reevaluated and reapplied.
     fn apply_run_while_expressions_mentioning(&mut self, name: &VarName) {
-        let mentioning_vars = match self.eww_config.get_run_while_mentions_of(&name) {
+        let mentioning_vars = match self.eww_config.get_run_while_mentions_of(name) {
             Some(x) => x,
             None => return,
         };
@@ -342,17 +342,17 @@ impl App {
             )?;
 
             let root_widget = crate::widgets::build_widget::build_gtk_widget(
-                &mut *self.scope_graph.borrow_mut(),
+                &mut self.scope_graph.borrow_mut(),
                 Rc::new(self.eww_config.get_widget_definitions().clone()),
                 window_scope,
                 window_def.widget.clone(),
                 None,
             )?;
 
-            let monitor_geometry = get_monitor_geometry(monitor.or(window_def.monitor.clone()))?;
+            let monitor_geometry = get_monitor_geometry(monitor.or_else(|| window_def.monitor.clone()))?;
 
             let mut eww_window = initialize_window(monitor_geometry, root_widget, window_def, window_scope)?;
-            eww_window.gtk_window.style_context().add_class(&window_name.to_string());
+            eww_window.gtk_window.style_context().add_class(window_name);
 
             // initialize script var handlers for variables. As starting a scriptvar with the script_var_handler is idempodent,
             // we can just start script vars that are already running without causing issues
@@ -415,7 +415,7 @@ impl App {
         if let Err(err) = self.css_provider.load_from_data(css.as_bytes()) {
             static PATTERN: Lazy<regex::Regex> = Lazy::new(|| regex::Regex::new(r"[^:]*:(\d+):(\d+)(.*)$").unwrap());
             let nice_error_option: Option<_> = try {
-                let captures = PATTERN.captures(&err.message())?;
+                let captures = PATTERN.captures(err.message())?;
                 let line = captures.get(1).unwrap().as_str().parse::<usize>().ok()?;
                 let msg = captures.get(3).unwrap().as_str();
                 let db = error_handling_ctx::FILE_DATABASE.read().ok()?;
@@ -479,7 +479,7 @@ fn initialize_window(
 
     window.show_all();
 
-    Ok(EwwWindow { name: window_def.name.clone(), gtk_window: window, scope_index: window_scope, destroy_event_handler_id: None })
+    Ok(EwwWindow { name: window_def.name, gtk_window: window, scope_index: window_scope, destroy_event_handler_id: None })
 }
 
 /// Apply the provided window-positioning rules to the window.
@@ -552,7 +552,7 @@ fn get_monitor_geometry(identifier: Option<MonitorIdentifier>) -> Result<gdk::Re
 /// Outside of x11, only [MonitorIdentifier::Numeric] is supported
 pub fn get_monitor_from_display(display: &gdk::Display, identifier: &MonitorIdentifier) -> Option<gdk::Monitor> {
     match identifier {
-        MonitorIdentifier::Numeric(num) => return display.monitor(*num),
+        MonitorIdentifier::Numeric(num) => display.monitor(*num),
 
         #[cfg(not(feature = "x11"))]
         MonitorIdentifier::Name(_) => return None,
@@ -566,9 +566,9 @@ pub fn get_monitor_from_display(display: &gdk::Display, identifier: &MonitorIden
                     }
                 }
             }
+            None
         }
     }
-    return None;
 }
 
 pub fn get_window_rectangle(geometry: WindowGeometry, screen_rect: gdk::Rectangle) -> gdk::Rectangle {
diff --git a/crates/eww/src/application_lifecycle.rs b/crates/eww/src/application_lifecycle.rs
index e97129a..dae01be 100644
--- a/crates/eww/src/application_lifecycle.rs
+++ b/crates/eww/src/application_lifecycle.rs
@@ -26,7 +26,7 @@ macro_rules! loop_select_exiting {
     ($($content:tt)*) => {
         loop {
             tokio::select! {
-                Ok(()) = crate::application_lifecycle::recv_exit() => {
+                Ok(()) = $crate::application_lifecycle::recv_exit() => {
                     break;
                 }
                 $($content)*
diff --git a/crates/eww/src/config/eww_config.rs b/crates/eww/src/config/eww_config.rs
index b7c743c..59229c8 100644
--- a/crates/eww/src/config/eww_config.rs
+++ b/crates/eww/src/config/eww_config.rs
@@ -24,7 +24,7 @@ pub fn read_from_eww_paths(eww_paths: &EwwPaths) -> Result<EwwConfig> {
 }
 
 /// Eww configuration structure.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct EwwConfig {
     widgets: HashMap<String, WidgetDefinition>,
     windows: HashMap<String, WindowDefinition>,
@@ -35,18 +35,6 @@ pub struct EwwConfig {
     run_while_mentions: HashMap<VarName, Vec<VarName>>,
 }
 
-impl Default for EwwConfig {
-    fn default() -> Self {
-        Self {
-            widgets: HashMap::new(),
-            windows: HashMap::new(),
-            initial_variables: HashMap::new(),
-            script_vars: HashMap::new(),
-            run_while_mentions: HashMap::new(),
-        }
-    }
-}
-
 impl EwwConfig {
     /// Load an [`EwwConfig`] from the config dir of the given [`crate::EwwPaths`], reading the main config file.
     pub fn read_from_dir(files: &mut FileDatabase, eww_paths: &EwwPaths) -> Result<Self> {
@@ -58,10 +46,10 @@ impl EwwConfig {
 
         // run some validations on the configuration
         let magic_globals: Vec<_> = inbuilt::INBUILT_VAR_NAMES
-            .into_iter()
+            .iter()
             .chain(inbuilt::MAGIC_CONSTANT_NAMES)
             .into_iter()
-            .map(|x| VarName::from(x.clone()))
+            .map(|x| VarName::from(*x))
             .collect();
         yuck::config::validate::validate(&config, magic_globals)?;
 
diff --git a/crates/eww/src/config/system_stats.rs b/crates/eww/src/config/system_stats.rs
index b31ffd4..191fe57 100644
--- a/crates/eww/src/config/system_stats.rs
+++ b/crates/eww/src/config/system_stats.rs
@@ -60,7 +60,7 @@ pub fn get_temperatures() -> String {
         "{{ {} }}",
         c.components()
             .iter()
-            .map(|c| format!(r#""{}": {}"#, c.label().to_uppercase().replace(" ", "_"), c.temperature()))
+            .map(|c| format!(r#""{}": {}"#, c.label().to_uppercase().replace(' ', "_"), c.temperature()))
             .join(",")
     )
 }
diff --git a/crates/eww/src/display_backend.rs b/crates/eww/src/display_backend.rs
index 99a3157..d949008 100644
--- a/crates/eww/src/display_backend.rs
+++ b/crates/eww/src/display_backend.rs
@@ -94,7 +94,6 @@ mod platform {
 #[cfg(feature = "x11")]
 mod platform {
     use anyhow::{Context, Result};
-    use gdkx11;
     use gtk::{self, prelude::*};
     use x11rb::protocol::xproto::ConnectionExt;
 
diff --git a/crates/eww/src/opts.rs b/crates/eww/src/opts.rs
index 379bda7..3a341a9 100644
--- a/crates/eww/src/opts.rs
+++ b/crates/eww/src/opts.rs
@@ -65,7 +65,7 @@ pub enum Action {
     WithServer(ActionWithServer),
 }
 
-#[derive(Subcommand, Debug, Serialize, Deserialize, PartialEq)]
+#[derive(Subcommand, Debug, Serialize, Deserialize, PartialEq, Eq)]
 pub enum ActionClientOnly {
     /// Print and watch the eww logs
     #[clap(name = "logs")]
diff --git a/crates/eww/src/script_var_handler.rs b/crates/eww/src/script_var_handler.rs
index 7e20e74..c289e37 100644
--- a/crates/eww/src/script_var_handler.rs
+++ b/crates/eww/src/script_var_handler.rs
@@ -57,8 +57,7 @@ pub fn init(evt_send: UnboundedSender<DaemonCommand>) -> ScriptVarHandlerHandle
             })
         })
         .expect("Failed to start script-var-handler thread");
-    let handle = ScriptVarHandlerHandle { msg_send, thread_handle };
-    handle
+    ScriptVarHandlerHandle { msg_send, thread_handle }
 }
 
 /// Handle to the script-var handling system.
@@ -229,7 +228,7 @@ impl ListenVarHandler {
         }
 
         let (cancel_send, mut cancel_recv) = cancellation::create();
-        self.listen_process_handles.insert(var.name.clone(), cancel_send.clone());
+        self.listen_process_handles.insert(var.name.clone(), cancel_send);
 
         let evt_send = self.evt_send.clone();
         tokio::spawn(async move {
diff --git a/crates/eww/src/state/scope_graph.rs b/crates/eww/src/state/scope_graph.rs
index 43dc0f5..a0de7ee 100644
--- a/crates/eww/src/state/scope_graph.rs
+++ b/crates/eww/src/state/scope_graph.rs
@@ -568,7 +568,7 @@ mod internal {
                             ))
                             .collect::<Vec<_>>()
                     )
-                    .replace("\"", "'")
+                    .replace('\"', "'")
                 ));
                 if let Some(created_by) = scope.ancestor {
                     output.push_str(&format!("  \"{:?}\" -> \"{:?}\"[label=\"ancestor\"]\n", created_by, scope_index));
@@ -581,7 +581,7 @@ mod internal {
                         "  \"{:?}\" -> \"{:?}\" [color = \"red\", label = \"{}\"]\n",
                         parent,
                         child,
-                        format!(":{} `{:?}`", edge.attr_name, edge.expression).replace("\"", "'")
+                        format!(":{} `{:?}`", edge.attr_name, edge.expression).replace('\"', "'")
                     ));
                 }
             }
@@ -590,7 +590,7 @@ mod internal {
                     "  \"{:?}\" -> \"{:?}\" [color = \"blue\", label = \"{}\"]\n",
                     child,
                     parent,
-                    format!("inherits({:?})", edge.references).replace("\"", "'")
+                    format!("inherits({:?})", edge.references).replace('\"', "'")
                 ));
             }
 
diff --git a/crates/eww/src/util.rs b/crates/eww/src/util.rs
index d93a7bd..712a411 100644
--- a/crates/eww/src/util.rs
+++ b/crates/eww/src/util.rs
@@ -123,7 +123,7 @@ pub fn replace_env_var_references(input: String) -> String {
 
 pub fn unindent(text: &str) -> String {
     // take all the lines of our text and skip over the first empty ones
-    let lines = text.lines().skip_while(|x| *x == "");
+    let lines = text.lines().skip_while(|x| x.is_empty());
     // find the smallest indentation
     let min = lines
         .clone()
diff --git a/crates/eww/src/widgets/build_widget.rs b/crates/eww/src/widgets/build_widget.rs
index 4311cce..52855d0 100644
--- a/crates/eww/src/widgets/build_widget.rs
+++ b/crates/eww/src/widgets/build_widget.rs
@@ -228,10 +228,8 @@ fn build_loop_special_widget(
         Listener {
             needed_variables: widget_use.elements_expr.collect_var_refs(),
             f: Box::new({
-                let custom_widget_invocation = custom_widget_invocation.clone();
-                let widget_defs = widget_defs.clone();
                 let elements_expr = widget_use.elements_expr.clone();
-                let elements_expr_span = widget_use.elements_expr_span.clone();
+                let elements_expr_span = widget_use.elements_expr_span;
                 let element_name = widget_use.element_name.clone();
                 let body: WidgetUse = widget_use.body.as_ref().clone();
                 let created_children = Rc::new(RefCell::new(Vec::<gtk::Widget>::new()));
@@ -243,7 +241,7 @@ fn build_loop_special_widget(
                         .as_json_value()?
                         .as_array()
                         .context("Not an array value")?
-                        .into_iter()
+                        .iter()
                         .map(DynVal::from)
                         .collect_vec();
                     let mut created_children = created_children.borrow_mut();
diff --git a/crates/eww/src/widgets/def_widget_macro.rs b/crates/eww/src/widgets/def_widget_macro.rs
index 2581ad8..2828029 100644
--- a/crates/eww/src/widgets/def_widget_macro.rs
+++ b/crates/eww/src/widgets/def_widget_macro.rs
@@ -40,7 +40,7 @@ macro_rules! def_widget {
 
                     $args.scope_graph.register_listener(
                         $args.calling_scope,
-                            crate::state::scope::Listener {
+                            $crate::state::scope::Listener {
                             needed_variables: required_vars,
                             f: Box::new({
                                 // create a weak reference to the widget, such that this listener doesn't prevent the actual widget from
diff --git a/crates/eww/src/widgets/mod.rs b/crates/eww/src/widgets/mod.rs
index 392212f..d079169 100644
--- a/crates/eww/src/widgets/mod.rs
+++ b/crates/eww/src/widgets/mod.rs
@@ -45,7 +45,7 @@ where
 {
     if !args.is_empty() {
         let cmd = cmd.replace("{}", &format!("{}", args[0]));
-        args.iter().enumerate().fold(cmd.to_string(), |acc, (i, arg)| acc.replace(&format!("{{{}}}", i), &format!("{}", arg)))
+        args.iter().enumerate().fold(cmd, |acc, (i, arg)| acc.replace(&format!("{{{}}}", i), &format!("{}", arg)))
     } else {
         cmd.to_string()
     }
diff --git a/crates/eww/src/widgets/transform.rs b/crates/eww/src/widgets/transform.rs
index ea09fbe..f3c8b17 100644
--- a/crates/eww/src/widgets/transform.rs
+++ b/crates/eww/src/widgets/transform.rs
@@ -137,22 +137,22 @@ impl WidgetImpl for TransformPriv {
             cr.save()?;
 
             let translate_x = match &*self.translate_x.borrow() {
-                Some(tx) => NumWithUnit::from_str(&tx)?.pixels_relative_to(total_width as i32) as f64,
+                Some(tx) => NumWithUnit::from_str(tx)?.pixels_relative_to(total_width as i32) as f64,
                 None => 0.0,
             };
 
             let translate_y = match &*self.translate_y.borrow() {
-                Some(ty) => NumWithUnit::from_str(&ty)?.pixels_relative_to(total_height as i32) as f64,
+                Some(ty) => NumWithUnit::from_str(ty)?.pixels_relative_to(total_height as i32) as f64,
                 None => 0.0,
             };
 
             let scale_x = match &*self.scale_x.borrow() {
-                Some(sx) => NumWithUnit::from_str(&sx)?.perc_relative_to(total_width as i32) as f64 / 100.0,
+                Some(sx) => NumWithUnit::from_str(sx)?.perc_relative_to(total_width as i32) as f64 / 100.0,
                 None => 1.0,
             };
 
             let scale_y = match &*self.scale_y.borrow() {
-                Some(sy) => NumWithUnit::from_str(&sy)?.perc_relative_to(total_height as i32) as f64 / 100.0,
+                Some(sy) => NumWithUnit::from_str(sy)?.perc_relative_to(total_height as i32) as f64 / 100.0,
                 None => 1.0,
             };
 
@@ -162,7 +162,7 @@ impl WidgetImpl for TransformPriv {
 
             // Children widget
             if let Some(child) = &*self.content.borrow() {
-                widget.propagate_draw(child, &cr);
+                widget.propagate_draw(child, cr);
             }
 
             cr.restore()?;
diff --git a/crates/eww/src/widgets/widget_definitions.rs b/crates/eww/src/widgets/widget_definitions.rs
index 16f1f17..6593b12 100644
--- a/crates/eww/src/widgets/widget_definitions.rs
+++ b/crates/eww/src/widgets/widget_definitions.rs
@@ -272,7 +272,7 @@ pub(super) fn resolve_orientable_attrs(bargs: &mut BuilderArgs, gtk_widget: &gtk
 
 // concrete widgets
 
-const WIDGET_NAME_COMBO_BOX_TEXT: &'static str = "combo-box-text";
+const WIDGET_NAME_COMBO_BOX_TEXT: &str = "combo-box-text";
 /// @widget combo-box-text
 /// @desc A combo box allowing the user to choose between several items.
 fn build_gtk_combo_box_text(bargs: &mut BuilderArgs) -> Result<gtk::ComboBoxText> {
diff --git a/crates/eww_shared_util/src/span.rs b/crates/eww_shared_util/src/span.rs
index 94919b1..fcf6e69 100644
--- a/crates/eww_shared_util/src/span.rs
+++ b/crates/eww_shared_util/src/span.rs
@@ -32,6 +32,7 @@ impl Span {
         self.0 = self.1;
         self
     }
+
     pub fn shifted(mut self, n: isize) -> Self {
         self.0 = isize::max(0, self.0 as isize + n) as usize;
         self.1 = isize::max(0, self.0 as isize + n) as usize;
diff --git a/crates/eww_shared_util/src/wrappers.rs b/crates/eww_shared_util/src/wrappers.rs
index 4220c7b..ef07c79 100644
--- a/crates/eww_shared_util/src/wrappers.rs
+++ b/crates/eww_shared_util/src/wrappers.rs
@@ -4,20 +4,7 @@ use serde::{Deserialize, Serialize};
 
 /// The name of a variable
 #[repr(transparent)]
-#[derive(
-    Clone,
-    Hash,
-    PartialEq,
-    Eq,
-    Serialize,
-    Deserialize,
-    AsRef,
-    From,
-    FromStr,
-    Display,
-    DebugCustom,
-    RefCast,
-)]
+#[derive(Clone, Hash, PartialEq, Eq, Serialize, Deserialize, AsRef, From, FromStr, Display, DebugCustom, RefCast)]
 #[debug(fmt = "VarName({})", .0)]
 pub struct VarName(pub String);
 
@@ -47,20 +34,7 @@ impl From<AttrName> for VarName {
 
 /// The name of an attribute
 #[repr(transparent)]
-#[derive(
-    Clone,
-    Hash,
-    PartialEq,
-    Eq,
-    Serialize,
-    Deserialize,
-    AsRef,
-    From,
-    FromStr,
-    Display,
-    DebugCustom,
-    RefCast,
-)]
+#[derive(Clone, Hash, PartialEq, Eq, Serialize, Deserialize, AsRef, From, FromStr, Display, DebugCustom, RefCast)]
 #[debug(fmt="AttrName({})", .0)]
 pub struct AttrName(pub String);
 
diff --git a/crates/simplexpr/src/eval.rs b/crates/simplexpr/src/eval.rs
index b31db4a..a4ff8ba 100644
--- a/crates/simplexpr/src/eval.rs
+++ b/crates/simplexpr/src/eval.rs
@@ -104,7 +104,7 @@ impl SimplExpr {
     /// If a var-ref links to another var-ref, that other var-ref is used.
     /// If a referenced variable is not found in the given hashmap, returns the var-ref unchanged.
     pub fn resolve_one_level(self, variables: &HashMap<VarName, SimplExpr>) -> Self {
-        self.map_var_refs(|span, name| variables.get(&name).cloned().unwrap_or_else(|| Self::VarRef(span, name)))
+        self.map_var_refs(|span, name| variables.get(&name).cloned().unwrap_or(Self::VarRef(span, name)))
     }
 
     /// resolve variable references in the expression. Fails if a variable cannot be resolved.
@@ -298,7 +298,7 @@ fn call_expr_function(name: &str, args: Vec<DynVal>) -> Result<DynVal, EvalError
                 let string = string.as_string()?;
                 let pattern = regex::Regex::new(&pattern.as_string()?)?;
                 let replacement = replacement.as_string()?;
-                Ok(DynVal::from(pattern.replace_all(&string, replacement.replace("$", "$$").replace("\\", "$")).into_owned()))
+                Ok(DynVal::from(pattern.replace_all(&string, replacement.replace('$', "$$").replace('\\', "$")).into_owned()))
             }
             _ => Err(EvalError::WrongArgCount(name.to_string())),
         },
diff --git a/crates/simplexpr/src/parser/lexer.rs b/crates/simplexpr/src/parser/lexer.rs
index ce9919c..94ea848 100644
--- a/crates/simplexpr/src/parser/lexer.rs
+++ b/crates/simplexpr/src/parser/lexer.rs
@@ -111,8 +111,8 @@ regex_rules! {
     r"\s+" => |_| Token::Skip,
     r";.*"=> |_| Token::Comment,
 
-    r"[a-zA-Z_][a-zA-Z0-9_-]*" => |x| Token::Ident(x),
-    r"[+-]?(?:[0-9]+[.])?[0-9]+" => |x| Token::NumLit(x)
+    r"[a-zA-Z_][a-zA-Z0-9_-]*" => Token::Ident,
+    r"[+-]?(?:[0-9]+[.])?[0-9]+" => Token::NumLit
 }
 
 #[derive(Debug)]
diff --git a/crates/yuck/src/config/monitor.rs b/crates/yuck/src/config/monitor.rs
index 7e5dc44..53d6a39 100644
--- a/crates/yuck/src/config/monitor.rs
+++ b/crates/yuck/src/config/monitor.rs
@@ -11,10 +11,7 @@ pub enum MonitorIdentifier {
 
 impl MonitorIdentifier {
     pub fn is_numeric(&self) -> bool {
-        match self {
-            Self::Numeric(_) => true,
-            _ => false,
-        }
+        matches!(self, Self::Numeric(_))
     }
 }
 
diff --git a/crates/yuck/src/config/validate.rs b/crates/yuck/src/config/validate.rs
index 3095f5d..4876331 100644
--- a/crates/yuck/src/config/validate.rs
+++ b/crates/yuck/src/config/validate.rs
@@ -105,7 +105,7 @@ pub fn validate_variables_in_widget_use(
         }
 
         for child in widget.children.iter() {
-            let _ = validate_variables_in_widget_use(defs, variables, child, is_in_definition)?;
+            validate_variables_in_widget_use(defs, variables, child, is_in_definition)?;
         }
     } else if let WidgetUse::Loop(widget) = widget {
         let unknown_var = widget
@@ -120,7 +120,7 @@ pub fn validate_variables_in_widget_use(
         }
         let mut variables = variables.clone();
         variables.insert(widget.element_name.clone());
-        let _ = validate_variables_in_widget_use(defs, &variables, &widget.body, is_in_definition)?;
+        validate_variables_in_widget_use(defs, &variables, &widget.body, is_in_definition)?;
     }
 
     Ok(())
diff --git a/crates/yuck/src/parser/lexer.rs b/crates/yuck/src/parser/lexer.rs
index 00428c0..ec9bfa0 100644
--- a/crates/yuck/src/parser/lexer.rs
+++ b/crates/yuck/src/parser/lexer.rs
@@ -63,9 +63,9 @@ regex_rules! {
     r"\]" => |_| Token::RBrack,
     r"true"  => |_| Token::True,
     r"false" => |_| Token::False,
-    r#"[+-]?(?:[0-9]+[.])?[0-9]+"# => |x| Token::NumLit(x),
-    r#":[^\s\)\]}]+"# => |x| Token::Keyword(x),
-    r#"[a-zA-Z_!\?<>/\.\*-\+\-][^\s{}\(\)\[\](){}]*"# => |x| Token::Symbol(x),
+    r#"[+-]?(?:[0-9]+[.])?[0-9]+"# => Token::NumLit,
+    r#":[^\s\)\]}]+"# => Token::Keyword,
+    r#"[a-zA-Z_!\?<>/\.\*-\+\-][^\s{}\(\)\[\](){}]*"# => Token::Symbol,
     r#";.*"# => |_| Token::Comment,
     r"[ \t\n\f]+" => |_| Token::Skip
 }
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..edce9c8
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,14 @@
+unstable_features = true
+fn_single_line = false
+max_width = 130
+reorder_impl_items = true
+merge_imports = true
+normalize_comments = true
+use_field_init_shorthand = true
+#wrap_comments = true
+combine_control_expr = false
+condense_wildcard_suffixes = true
+format_code_in_doc_comments = true
+format_macro_matchers = true
+format_strings = true
+use_small_heuristics = "Max"