fix: resolve pre-existing clippy warnings

Author: baszalmstra

crates/pixi_build_backend_passthrough/src/lib.rs

@@ -275,7 +275,7 @@ fn generate_variant_combinations(
             variant_values
                 .iter()
                 .map(|(key, _)| key)
-                .zip(combination.into_iter())
+                .zip(combination)
                 .map(|(key, value)| (key.clone(), value.clone()))
                 .collect()
         })
@@ -515,7 +515,7 @@ mod tests {
 
     #[test]
     fn test_is_star_requirement_with_no_version() {
-        let spec = PackageSpecV1::Binary(Box::new(BinaryPackageSpecV1::default()));
+        let spec = PackageSpecV1::Binary(Box::default());
 
         assert!(is_star_requirement(&spec));
     }

crates/pixi_command_dispatcher/src/solve_conda/mod.rs

@@ -338,7 +338,7 @@ fn unique_dev_source_url(dev_source: &pixi_record::DevSourceRecord) -> Url {
     pairs.append_pair("name", dev_source.name.as_source());
 
     for (key, value) in &dev_source.variants {
-        pairs.append_pair(&format!("_{}", key), &value);
+        pairs.append_pair(&format!("_{}", key), value);
     }
 
     drop(pairs);

crates/pixi_command_dispatcher/src/solve_pixi/mod.rs

@@ -303,9 +303,9 @@ impl PixiEnvironmentSpec {
 
     /// Returns an iterator over all dependencies from dev source records,
     /// excluding packages that are themselves dev sources.
-    fn dev_source_dependencies<'a>(
-        dev_source_records: &'a [pixi_record::DevSourceRecord],
-    ) -> impl Iterator<Item = (rattler_conda_types::PackageName, PixiSpec)> + 'a {
+    fn dev_source_dependencies(
+        dev_source_records: &[pixi_record::DevSourceRecord],
+    ) -> impl Iterator<Item = (rattler_conda_types::PackageName, PixiSpec)> + '_ {
         use std::collections::HashSet;
 
         // Collect all dev source package names to filter them out