diff --git a/src/main.rs b/src/main.rs
index 5e4a65a..774084b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -20,7 +20,7 @@ mod maaru_lang;
 mod robo_lang;
 
 mod language;
-use language::{ProgrammingLanguage, LanguageInterface, ProgrammingLanguageInterface, EvalOptions, LLVMCodeString, EvaluationMachine};
+use language::{ProgrammingLanguage, LanguageInterface, ProgrammingLanguageInterface, EvalOptions, LLVMCodeString};
 
 mod llvm_wrap;
 
@@ -30,6 +30,7 @@ use virtual_machine::{run_vm, run_assembler};
 fn main() {
     let languages: Vec<Box<ProgrammingLanguageInterface>> =
         vec![
+            Box::new(schala_lang::Schala::new()),
             Box::new(maaru_lang::Maaru::new()),
             Box::new(robo_lang::Robo::new()),
             /*
diff --git a/src/robo_lang/mod.rs b/src/robo_lang/mod.rs
index 7d17de1..2fa9a0d 100644
--- a/src/robo_lang/mod.rs
+++ b/src/robo_lang/mod.rs
@@ -1,7 +1,7 @@
 extern crate itertools;
 use self::itertools::Itertools;
 
-use language::{ProgrammingLanguageInterface, EvalOptions, ProgrammingLanguage, EvaluationMachine, ParseError, TokenError, LLVMCodeString};
+use language::{ProgrammingLanguageInterface, EvalOptions, ProgrammingLanguage, ParseError, TokenError, LLVMCodeString};
 
 pub struct Robo {
 }
@@ -12,10 +12,7 @@ impl Robo {
     }
 }
 
-pub struct RoboEvaluator {
-    pub trace_evaluation: bool,
-}
-
+#[allow(dead_code)]
 #[derive(Debug)]
 pub enum Token {
     StrLiteral(String),
@@ -37,20 +34,24 @@ pub enum Token {
     NumLiteral(Number),
 }
 
+#[allow(dead_code)]
 #[derive(Debug)]
 pub enum Number {
     IntegerRep(String),
     FloatRep(String)
 }
 
+#[allow(dead_code)]
 pub type AST = Vec<ASTNode>;
 
+#[allow(dead_code)]
 #[derive(Debug)]
 pub enum ASTNode {
     FunctionDefinition(String, Expression),
     ImportStatement(String),
 }
 
+#[allow(dead_code)]
 #[derive(Debug)]
 pub enum Expression {
 
@@ -151,19 +152,3 @@ impl ProgrammingLanguageInterface for Robo {
   }
 }
 
-impl EvaluationMachine for RoboEvaluator {
-    fn set_option(&mut self, option: &str, value: bool) -> bool {
-        if option == "trace_evaluation" {
-            self.trace_evaluation = value;
-            return true;
-        }
-
-        false
-    }
-
-    fn new() -> RoboEvaluator {
-        RoboEvaluator {
-            trace_evaluation: false,
-        }
-    }
-}
diff --git a/src/schala_lang/mod.rs b/src/schala_lang/mod.rs
index 2c09692..62fdbb3 100644
--- a/src/schala_lang/mod.rs
+++ b/src/schala_lang/mod.rs
@@ -1,4 +1,4 @@
-use language::{ProgrammingLanguage, EvaluationMachine, ParseError, TokenError, LLVMCodeString};
+use language::{ProgrammingLanguageInterface, EvalOptions, ParseError, TokenError, LLVMCodeString};
 
 mod parsing;
 
@@ -11,38 +11,12 @@ impl Schala {
   }
 }
 
-impl ProgrammingLanguage for Schala {
-  type Token = parsing::Token;
-  type AST = parsing::AST;
-  type Evaluator = SchalaEvaluator;
-
-  fn name() -> String {
+impl ProgrammingLanguageInterface for Schala {
+  fn get_language_name(&self) -> String {
     "Schala".to_string()
   }
 
-  fn tokenize(input: &str) -> Result<Vec<Self::Token>, TokenError> {
-    parsing::tokenize(input)
-  }
-  fn parse(input: Vec<Self::Token>) -> Result<Self::AST, ParseError> {
-    unimplemented!()
-  }
-  fn evaluate(ast: Self::AST, evaluator: &mut Self::Evaluator) -> Vec<String> {
-    unimplemented!()
-  }
-  fn compile(ast: Self::AST) -> LLVMCodeString {
-    unimplemented!()
+  fn evaluate_in_repl(&mut self, input: &str, eval_options: EvalOptions) -> Vec<String> {
+    vec!(format!("evaluation"))
   }
 }
-
-pub struct SchalaEvaluator { }
-
-impl EvaluationMachine for SchalaEvaluator {
-  fn new() -> SchalaEvaluator {
-    SchalaEvaluator { }
-  }
-  fn set_option(&mut self, option: &str, value: bool) -> bool {
-    false
-  }
-}
-
-