diff --git a/crates/lang/src/parser.rs b/crates/lang/src/parser.rs
index 8843d11..8422bc0 100644
--- a/crates/lang/src/parser.rs
+++ b/crates/lang/src/parser.rs
@@ -100,14 +100,3 @@ pub(crate) fn parser<
         decls: IndexMap::from_iter(decls),
     }))
 }
-pub mod asg {
-    use std::collections::BTreeMap;
-
-    use petgraph::{adj::NodeIndex, data::Build, graph::DiGraph};
-
-    use super::{ast::Expr, Spanned};
-
-    pub struct Asg<'src> {
-        ast: Expr<'src>,
-    }
-}
diff --git a/crates/lang/src/parser/ast.rs b/crates/lang/src/parser/ast.rs
index e58c5aa..02ce0ae 100644
--- a/crates/lang/src/parser/ast.rs
+++ b/crates/lang/src/parser/ast.rs
@@ -28,18 +28,18 @@ pub enum Expr<'src> {
         Option<Spanned<IndexMap<Spanned<&'src str>, Expression<'src>>>>,
     ),
     SimplePipe(Box<Expression<'src>>, Box<Expression<'src>>),
-    NamingPipe(
-        Box<Expression<'src>>,
-        (Vec<Spanned<&'src str>>, Vec<Spanned<&'src str>>),
-        Box<Expression<'src>>,
-    ),
+    // NamingPipe(
+    //     Box<Expression<'src>>,
+    //     (Vec<Spanned<&'src str>>, Vec<Spanned<&'src str>>),
+    //     Box<Expression<'src>>,
+    // ),
     MappingPipe(Box<Expression<'src>>, Box<Expression<'src>>),
     NullPipe(Box<Expression<'src>>, Box<Expression<'src>>),
     MultiPipe(IndexMap<Spanned<&'src str>, Expression<'src>>),
-    LetIn(
-        IndexMap<Spanned<&'src str>, Box<Expression<'src>>>,
-        Box<Expression<'src>>,
-    ),
+    // LetIn(
+    //     IndexMap<Spanned<&'src str>, Box<Expression<'src>>>,
+    //     Box<Expression<'src>>,
+    // ),
     // $
     Var(&'src str),
     // @
diff --git a/crates/lang/src/tokens.rs b/crates/lang/src/tokens.rs
index 40280e7..e881663 100644
--- a/crates/lang/src/tokens.rs
+++ b/crates/lang/src/tokens.rs
@@ -10,6 +10,10 @@ pub enum Token<'a> {
     // so a declaration needs the keyword def until i can figure this out
     #[token("def")]
     Def,
+    #[token("let")]
+    Let,
+    #[token("in")]
+    In,
     #[regex("[a-zA-Z0-9_\\-]+", |lex| lex.slice())]
     Word(&'a str),
     #[regex("\\$[a-zA-Z0-9_\\-]+", |lex| &lex.slice()[1..])]