diff --git a/schala-lang/language/Cargo.toml b/schala-lang/language/Cargo.toml
index 9c891ad..ea09ac1 100644
--- a/schala-lang/language/Cargo.toml
+++ b/schala-lang/language/Cargo.toml
@@ -2,6 +2,7 @@
 name = "schala-lang"
 version = "0.1.0"
 authors = ["greg <greg.shuflin@protonmail.com>"]
+edition = "2018"
 
 [dependencies]
 itertools = "0.5.8"
diff --git a/schala-lang/language/src/ast.rs b/schala-lang/language/src/ast.rs
index 9563387..32b2ae7 100644
--- a/schala-lang/language/src/ast.rs
+++ b/schala-lang/language/src/ast.rs
@@ -1,7 +1,7 @@
 use std::rc::Rc;
 use std::convert::From;
 
-use builtin::{BinOp, PrefixOp};
+use crate::builtin::{BinOp, PrefixOp};
 
 #[derive(Clone, Debug, PartialEq)]
 pub struct Node<T> {
diff --git a/schala-lang/language/src/builtin.rs b/schala-lang/language/src/builtin.rs
index b0a7e96..cfc6405 100644
--- a/schala-lang/language/src/builtin.rs
+++ b/schala-lang/language/src/builtin.rs
@@ -2,7 +2,7 @@ use std::rc::Rc;
 use std::collections::HashMap;
 use std::fmt;
 
-use tokenizing::TokenKind;
+use crate::tokenizing::TokenKind;
 use self::BuiltinTypeSpecifier::*;
 use self::BuiltinTConst::*;
 
diff --git a/schala-lang/language/src/eval.rs b/schala-lang/language/src/eval.rs
index 7a89823..f79a40b 100644
--- a/schala-lang/language/src/eval.rs
+++ b/schala-lang/language/src/eval.rs
@@ -6,9 +6,9 @@ use std::io;
 
 use itertools::Itertools;
 
-use util::ScopeStack;
-use reduced_ast::{BoundVars, ReducedAST, Stmt, Expr, Lit, Func, Alternative, Subpattern};
-use symbol_table::{SymbolSpec, Symbol, SymbolTable};
+use crate::util::ScopeStack;
+use crate::reduced_ast::{BoundVars, ReducedAST, Stmt, Expr, Lit, Func, Alternative, Subpattern};
+use crate::symbol_table::{SymbolSpec, Symbol, SymbolTable};
 
 pub struct State<'a> {
   values: ScopeStack<'a, Rc<String>, ValueEntry>,
@@ -86,7 +86,7 @@ impl Node {
   }
   fn is_true(&self) -> bool {
     match self {
-      Node::Expr(Expr::Lit(::reduced_ast::Lit::Bool(true))) => true,
+      Node::Expr(Expr::Lit(crate::reduced_ast::Lit::Bool(true))) => true,
       _ => false,
     }
   }
@@ -497,14 +497,14 @@ mod eval_tests {
   use std::cell::RefCell;
   use std::rc::Rc;
 
-  use tokenizing::{Token, tokenize};
-  use ::parsing::ParseResult;
-  use ::ast::AST;
-  use symbol_table::SymbolTable;
-  use eval::State;
+  use crate::tokenizing::{Token, tokenize};
+  use crate::parsing::ParseResult;
+  use crate::ast::AST;
+  use crate::symbol_table::SymbolTable;
+  use crate::eval::State;
 
   fn parse(tokens: Vec<Token>) -> ParseResult<AST> {
-    let mut parser = ::parsing::Parser::new(tokens);
+    let mut parser = crate::parsing::Parser::new(tokens);
     parser.parse()
   }
 
diff --git a/schala-lang/language/src/lib.rs b/schala-lang/language/src/lib.rs
index 8d0bdd6..ffbd440 100644
--- a/schala-lang/language/src/lib.rs
+++ b/schala-lang/language/src/lib.rs
@@ -110,7 +110,7 @@ fn tokenizing(input: &str, _handle: &mut Schala, comp: Option<&mut UnfinishedCom
 }
 
 fn parsing(input: Vec<tokenizing::Token>, handle: &mut Schala, comp: Option<&mut UnfinishedComputation>) -> Result<ast::AST, String> {
-  use parsing::Parser;
+  use crate::parsing::Parser;
 
   let mut parser = match handle.active_parser.take() {
     None => Parser::new(input),
diff --git a/schala-lang/language/src/parsing.rs b/schala-lang/language/src/parsing.rs
index 54546d7..484295c 100644
--- a/schala-lang/language/src/parsing.rs
+++ b/schala-lang/language/src/parsing.rs
@@ -2,13 +2,13 @@ use std::rc::Rc;
 use std::iter::Peekable;
 use std::vec::IntoIter;
 
-use tokenizing::*;
-use tokenizing::Kw::*;
-use tokenizing::TokenKind::*;
+use crate::tokenizing::*;
+use crate::tokenizing::Kw::*;
+use crate::tokenizing::TokenKind::*;
 
-use ast::*;
+use crate::ast::*;
 
-use builtin::{BinOp, PrefixOp};
+use crate::builtin::{BinOp, PrefixOp};
 
 #[derive(Debug)]
 pub struct ParseError {
@@ -1126,8 +1126,8 @@ mod parse_tests {
   use ::std::rc::Rc;
   use super::tokenize;
   use super::ParseResult;
-  use builtin::{PrefixOp, BinOp};
-  use ast::{AST, Node, Expression, Statement, IfExpressionBody, Discriminator, Pattern, PatternLiteral, TypeBody, Enumerator, ForBody};
+  use crate::builtin::{PrefixOp, BinOp};
+  use crate::ast::{AST, Node, Expression, Statement, IfExpressionBody, Discriminator, Pattern, PatternLiteral, TypeBody, Enumerator, ForBody};
   use super::Statement::*;
   use super::Declaration::*;
   use super::Signature;
@@ -1138,7 +1138,7 @@ mod parse_tests {
   use super::ForBody::*;
 
   fn parse(input: &str) -> ParseResult<AST> {
-    let tokens: Vec<::tokenizing::Token> = tokenize(input);
+    let tokens: Vec<crate::tokenizing::Token> = tokenize(input);
     let mut parser = super::Parser::new(tokens);
     parser.parse()
   }
@@ -1169,7 +1169,7 @@ mod parse_tests {
     ($expr_type:expr) => { Expression($expr_type, None) };
     (s $expr_text:expr) => {
       {
-        let tokens: Vec<::tokenizing::Token> = tokenize($expr_text);
+        let tokens: Vec<crate::tokenizing::Token> = tokenize($expr_text);
         let mut parser = super::Parser::new(tokens);
         parser.expression().unwrap()
       }
@@ -1188,7 +1188,7 @@ mod parse_tests {
     ($op:expr, $lhs:expr, $rhs:expr) => { Node::new(Statement::ExpressionStatement(ex!(binexp!($op, $lhs, $rhs)))) };
     (s $statement_text:expr) => {
       {
-        let tokens: Vec<::tokenizing::Token> = tokenize($statement_text);
+        let tokens: Vec<crate::tokenizing::Token> = tokenize($statement_text);
         let mut parser = super::Parser::new(tokens);
         Node::new(parser.statement().unwrap())
       }
diff --git a/schala-lang/language/src/reduced_ast.rs b/schala-lang/language/src/reduced_ast.rs
index 854b353..5b164c8 100644
--- a/schala-lang/language/src/reduced_ast.rs
+++ b/schala-lang/language/src/reduced_ast.rs
@@ -1,8 +1,8 @@
 use std::rc::Rc;
 
-use ast::*;
-use symbol_table::{Symbol, SymbolSpec, SymbolTable};
-use builtin::{BinOp, PrefixOp};
+use crate::ast::*;
+use crate::symbol_table::{Symbol, SymbolSpec, SymbolTable};
+use crate::builtin::{BinOp, PrefixOp};
 
 #[derive(Debug)]
 pub struct ReducedAST(pub Vec<Stmt>);
@@ -106,7 +106,7 @@ impl AST {
 
 impl Statement {
   fn reduce(&self, symbol_table: &SymbolTable) -> Stmt { 
-    use ast::Statement::*;
+    use crate::ast::Statement::*;
     match self {
       ExpressionStatement(expr) => Stmt::Expr(expr.node().reduce(symbol_table)),
       Declaration(decl) => decl.reduce(symbol_table),
@@ -120,7 +120,7 @@ fn reduce_block(block: &Block, symbol_table: &SymbolTable) -> Vec<Stmt> {
 
 impl Expression {
   fn reduce(&self, symbol_table: &SymbolTable) -> Expr {
-    use ast::ExpressionType::*;
+    use crate::ast::ExpressionType::*;
     let ref input = self.0;
     match input {
       NatLiteral(n) => Expr::Lit(Lit::Nat(*n)),
@@ -356,7 +356,7 @@ impl PatternLiteral {
 impl Declaration {
   fn reduce(&self, symbol_table: &SymbolTable) -> Stmt {
     use self::Declaration::*;
-    use ::ast::Signature;
+    use crate::ast::Signature;
     match self {
       Binding {name, constant, expr } => Stmt::Binding { name: name.clone(), constant: *constant, expr: expr.reduce(symbol_table) },
       FuncDecl(Signature { name, params, .. }, statements) => Stmt::PreBinding {
diff --git a/schala-lang/language/src/symbol_table.rs b/schala-lang/language/src/symbol_table.rs
index 7f2cedc..86fdbc0 100644
--- a/schala-lang/language/src/symbol_table.rs
+++ b/schala-lang/language/src/symbol_table.rs
@@ -3,8 +3,8 @@ use std::rc::Rc;
 use std::fmt;
 use std::fmt::Write;
 
-use ast;
-use typechecking::TypeName;
+use crate::ast;
+use crate::typechecking::TypeName;
 
 //cf. p. 150 or so of Language Implementation Patterns
 pub struct SymbolTable {
diff --git a/schala-lang/language/src/typechecking.rs b/schala-lang/language/src/typechecking.rs
index c493735..df47e87 100644
--- a/schala-lang/language/src/typechecking.rs
+++ b/schala-lang/language/src/typechecking.rs
@@ -1,7 +1,7 @@
 use std::rc::Rc;
 
-use ast::*;
-use util::ScopeStack;
+use crate::ast::*;
+use crate::util::ScopeStack;
 
 pub type TypeName = Rc<String>;
 
@@ -229,8 +229,8 @@ mod tests {
   use super::*;
 
   fn parse(input: &str) -> AST {
-    let tokens: Vec<::tokenizing::Token> = ::tokenizing::tokenize(input);
-    let mut parser = ::parsing::Parser::new(tokens);
+    let tokens: Vec<crate::tokenizing::Token> = crate::tokenizing::tokenize(input);
+    let mut parser = crate::parsing::Parser::new(tokens);
     parser.parse().unwrap()
   }