Define 'apply_parameter' method on 'Project'

crates/aiken-project/src/blueprint/mod.rs

@@ -53,7 +53,10 @@ impl Blueprint<Schema> {
     }
 }
 
-impl<T> Blueprint<T> {
+impl<T> Blueprint<T>
+where
+    T: Clone,
+{
     pub fn lookup(
         &self,
         title: Option<&String>,
@@ -83,10 +86,10 @@ impl<T> Blueprint<T> {
         action: F,
     ) -> Result<A, E>
     where
-        F: Fn(&Validator<T>) -> Result<A, E>,
+        F: Fn(Validator<T>) -> Result<A, E>,
     {
         match self.lookup(title, purpose) {
-            Some(LookupResult::One(validator)) => action(validator),
+            Some(LookupResult::One(validator)) => action(validator.to_owned()),
             Some(LookupResult::Many) => Err(when_too_many(
                 self.validators
                     .iter()

crates/aiken-project/src/blueprint/validator.rs

@@ -122,7 +122,12 @@ impl Validator<Schema> {
                 .unwrap(),
         })
     }
+}
 
+impl<T> Validator<T>
+where
+    T: Clone,
+{
     pub fn apply(&mut self, arg: &Term<DeBruijn>) -> Result<(), Error> {
         match self.parameters.split_first() {
             None => Err(Error::NoParametersToApply),