diff --git a/schala-repl-codegen/src/lib.rs b/schala-repl-codegen/src/lib.rs
index e0909e2..ce2cad3 100644
--- a/schala-repl-codegen/src/lib.rs
+++ b/schala-repl-codegen/src/lib.rs
@@ -66,6 +66,13 @@ fn get_attribute_identifier(attr_name: &str, attrs: &Vec<Attribute>) -> Option<p
   })
 }
 
+fn pass_chain_new(idents: Vec<Ident>) -> proc_macro2::TokenStream {
+  quote! {
+    let mut chain = pass_chain![self, options; #(#idents),* ];
+    chain(input)
+  }
+}
+
 #[proc_macro_derive(ProgrammingLanguageInterface,
   attributes(LanguageName, SourceFileExtension, PipelineSteps, DocMethod, HandleCustomInterpreterDirectives))]
 pub fn derive_programming_language_interface(input: TokenStream) -> TokenStream {
@@ -112,6 +119,8 @@ pub fn derive_programming_language_interface(input: TokenStream) -> TokenStream
     }
   });
 
+  let pass_chain = pass_chain_new(pass_idents.collect());
+
   let tokens = quote! {
     use schala_repl::PassDescriptor;
     impl ProgrammingLanguageInterface for #name {
@@ -122,8 +131,8 @@ pub fn derive_programming_language_interface(input: TokenStream) -> TokenStream
         #file_ext.to_string()
       }
       fn execute_pipeline(&mut self, input: &str, options: &EvalOptions) -> FinishedComputation {
-        let mut chain = pass_chain![self, options; #(#pass_idents),* ];
-        chain(input)
+
+        #pass_chain
       }
       fn get_passes(&self) -> Vec<PassDescriptor> {
         vec![ #(#pass_descriptors),* ]